☆ 4.8 Review

The Emerging Development of Multicolor Carbon Dots

SMALL (2022)

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Article Nanoscience & Nanotechnology

Decagram-Scale Synthesis of Multicolor Carbon Nanodots: Self-Tracking Nanoheaters with Inherent and Selective Anticancer Properties

Nicolo Mauro et al.

Summary: Carbon nanodots (CDs) are a new class of carbon-based nanoparticles with potential applications in drug delivery and cancer theranostics. The synthesis of efficient N,S-doped CDs allows for targeted and multimodal cytotoxic effects on cancer cells.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Review Chemistry, Physical

The synthetic strategies, photoluminescence mechanisms and promising applications of carbon dots: Current state and future perspective

Chuang He et al.

Summary: Carbon dots, as a rising star in carbon nanomaterials, have attracted enormous attention for their excellent optical properties, biocompatibility, catalytic performance, small size, low toxicity, and environmental friendliness. Researchers have extensively studied and summarized the synthetic strategies, photoluminescence mechanisms, and promising applications of carbon dots, as well as discussed the prospects and challenges for further research in this field.

CARBON (2022)

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Article Engineering, Environmental

Metal ions-doped carbon dots: Synthesis, properties, and applications

Xiangcao Li et al.

Summary: Doping with heteroatoms is an effective way to regulate the physicochemical properties of carbon dots. Metal ion doping can induce noticeable alterations in the optical, electronic, and magnetic properties of CDs, with challenges and promising applications in various fields.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Optics

Europium-based aminoclay containing carbon dots: A new visual fluorescence platform for visual point-of-care testing of tetracycline in various real samples

Lei Jia et al.

Summary: The research achieves accurate real-time detection of tetracycline through ratio fluorescence detection, showing high sensitivity and adjustable emission colors. The method is reliable and feasible in detecting TC in different samples. The TC floating detector designed in the study could offer a new pathway for point-of-care monitoring of TC residues.

JOURNAL OF LUMINESCENCE (2022)

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Article Materials Science, Multidisciplinary

Study on construction of red carbon nanodots from O-phenylenediamine

Yaqing Zhu et al.

Summary: Red emission carbon nanodots (CNDs) have great potential in bioimaging due to their low-toxicity and good compatibility. However, preparing red photoluminescence CNDs is challenging. By introducing specific precursor structures, the red emission was successfully achieved.

MATERIALS LETTERS (2022)

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Article Chemistry, Multidisciplinary

Ionic Liquid-Assisted Fast Synthesis of Carbon Dots with Strong Fluorescence and Their Tunable Multicolor Emission

Mengyan Cao et al.

Summary: In this study, carbon dots (CDs) with an ultrahigh photoluminescent quantum yield were rapidly synthesized at low temperature and pressure with the assistance of an ionic liquid. The approach also allowed for the achievement of tunable multicolor emissive CDs and preparation of high-performance white light-emitting diodes. Theoretical computation revealed the enhancement of synthesis reaction activity by ionic liquids and the effect of CDs' size and graphite nitrogen ratios on bandgap reduction, leading to a redshift in emission wavelength.

SMALL (2022)

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Review Materials Science, Multidisciplinary

Harnessing versatile dynamic carbon precursors for multi-color emissive carbon dots

Zitong Wei et al.

Summary: Carbon dots (CDs) are a relatively new type of fluorescent nanomaterials with excellent biocompatibility, controllable photoluminescence, high quantum yield (QY), and unique electronic and physicochemical properties, making them superior to carbon allotropes in various fields.

JOURNAL OF MATERIALS CHEMISTRY C (2022)

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Article Chemistry, Multidisciplinary

Ultrasonic-Assisted Synthesis of N-Doped, Multicolor Carbon Dots toward Fluorescent Inks, Fluorescence Sensors, and Logic Gate Operations

Jiali Xu et al.

Summary: In this study, nitrogen-doped carbon dots with excellent fluorescence and stability were successfully synthesized and applied in fields such as fluorescent inks and probe detection. Specifically, the green emission carbon dots served as a label-free probe for on-off detection of Fe3+ and were utilized in the construction of logic gates.

NANOMATERIALS (2022)

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Article Chemistry, Physical

Solvent-controlled synthesis strategy of multicolor emission carbon dots and its applications in sensing and light-emitting devices

Zhonghui Sun et al.

Summary: Carbon dots (CDs) as a new type of carbon-based luminescent nanomaterials have been successfully synthesized with bright blue, yellow, and red fluorescence emission by simply changing the reaction solvent. The precursors and solvents used play a key role in the formation of the three emission CDs. The multicolor CDs exhibit high selectivity and sensitivity as fluorescent probes in detection applications.

NANO RESEARCH (2022)

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Review Nanoscience & Nanotechnology

Visible-Light-Promoted Photocatalytic Applications of Carbon Dots: A Review

Deepika Saini et al.

Summary: This article summarizes the applications of carbon dots and carbon dot-based composites in photocatalysis, as well as their photocatalytic mechanisms and effects under visible light and sunlight-induced conditions. By doping and composite technologies, the light absorption ability is improved, leading to enhanced photocatalytic efficiency and stability.

ACS APPLIED NANO MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Multicolor biomass based carbon nanodots for bacterial imaging

Wenbo Zhao et al.

Summary: Biomass-based carbon nanodots (CNDs) have been prepared using natural biomass as precursors through an ultrasonic-assisted method at room temperature. The multicolor CNDs can be prepared within a short time and ultrasound contributes to the polymerization of biomolecules into nanodots. The CNDs show emission in the blue to red region and have demonstrated applications in bacterial imaging.

CHINESE CHEMICAL LETTERS (2022)

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Article Chemistry, Physical

Tunable full-color solid-state fluorescent carbon dots for light emitting diodes

Junli Wang et al.

Summary: In this study, self-quenching resistant solid-state fluorescent carbon dots (CDs) were successfully prepared via a one-step microwave method. The CDs exhibited tunable full-color solid-state emission and were utilized in the fabrication of white light emitting diodes (LEDs) with adjustable correlated color temperature and high color rendering index.

CARBON (2022)

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Article Engineering, Environmental

A pH-controlled synthetic route to violet, green, and orange fluorescent carbon dots for multicolor light-emitting diodes

Ruoyu Dai et al.

Summary: This study synthesized carbon dots with different pH conditions that emit violet, green, and orange fluorescence. By incorporating these carbon dots with starch, the photoluminescence efficiency was enhanced and applied to fabricate multicolor light-emitting diodes for indoor illumination.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

Sulfuric-acid-mediated synthesis strategy for multi-colour aggregation-induced emission fluorescent carbon dots: Application in anti-counterfeiting, information encryption, and rapid cytoplasmic imaging

Lijuan Yang et al.

Summary: This study successfully fabricated AIE-CDs with different fluorescence colors and investigated their structural properties and fluorescence behavior. The results showed that the sulfuric acid concentration, reaction temperature, and time significantly affected the properties of AIE-CDs. In addition, preliminary methods for anti-counterfeiting and information encryption using AIE-CDs were developed.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Optics

Full-color-emission carbon quantum dots by controlling surface states in a system of solvent

Yaoyao Yang et al.

Summary: This article successfully synthesized full-color-emission carbon quantum dots and found that the alterations of photoluminescence emission were mainly ascribed to surface states rather than particle size.

JOURNAL OF LUMINESCENCE (2022)

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Article Chemistry, Physical

Ethanol-derived white emissive carbon dots: the formation process investigation and multi-color/white LEDs preparation

Boyang Wang et al.

Summary: Carbon dots (CDs) have been synthesized using ethanol as a carbon source, composed of blue-, cyan-, and yellow-emitting CDs which fluoresce at corresponding wavelengths. The red-shift in emission peaks is attributed to increased carbonization in polymer structure, leading to different surface states. Theoretically verified results have successfully been used in developing multi-color and white light-emitting diodes (LEDs).

NANO RESEARCH (2022)

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Article Chemistry, Multidisciplinary

Chitosan-Derived Carbon Dots with Room-Temperature Phosphorescence and Energy Storage Enhancement Properties

Qiong Wu et al.

Summary: Fluorescent carbon dots ranging from blue to green were prepared through a microwave-assisted hydrothermal reaction. The carbon dots exhibited developed surface groups and high percentages of C=O, CN=C, and C=C groups. The addition of sodium hydroxide and boric acid enhanced the emission properties of carbon dots, allowing them to exhibit room-temperature property phenomena that were visible to the naked eye. The carbon dots also showed potential applications in enhancing the capacitance of graphene oxide and in the fields of security, sensing, and energy storage.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2022)

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Review Materials Science, Multidisciplinary

The light of carbon dots: From mechanism to applications

Boyang Wang et al.

Summary: This review discusses the preparation and optical properties of carbon dots (CDs), which are an important type of nanomaterial with wide applications in optoelectronic devices and biomedicine. The review explores the fluorescence mechanism and preparation methods of CDs, and highlights the adjustment of CD afterglow emission. Additionally, the review discusses the important optical applications of CDs and presents future research directions and potential challenges.

MATTER (2022)

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Review Chemistry, Multidisciplinary

The Rapid and Large-Scale Production of Carbon Quantum Dots and their Integration with Polymers

Xiang-Yun Du et al.

Summary: This review summarizes the emerging methods for large-scale production of CDs and their applications in optoelectronic, biomedical, and sensing fields. It emphasizes the multiple roles of CDs in composite materials and outlines their typical applications in various fields.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

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Article Engineering, Environmental

Recent advances and prospects of carbon dots in phototherapy

Baoling Li et al.

Summary: Carbon dots, as a novel zero-dimensional carbonaceous nanomaterial, have shown great potential in phototherapy as effective photosensitizers or photothermal agents for cancer treatment, and are expected to play an important role in phototheranostics.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Nanoscience & Nanotechnology

Solvatochromic Surface-Passivated Carbon Dots for Fluorometric Moisture Sensing in Organic Solvents

Melis Ozge Alas et al.

Summary: In this study, solvatochromic, red fluorescence-emitting carbon dots (rCDs) were successfully synthesized from para-phenylenediamine (p-PD) using a one-step microwave-assisted solvothermal method. The surface passivation with hydroxyl-enriched HBPs of varying generation numbers (G2 and G4) was found to significantly impact the quantum yield of rCDs, while not affecting their solvatochromic properties. The results show that the red-shifted fluorescence emission of rCDs in response to increased solvent polarity can be utilized for moisture detection in organic solvents and analysis of surface characteristics of paper strips.

ACS APPLIED NANO MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Logic Gate Design Using Multicolor Fluorescent Carbon Nanodots for Smartphone-Based Information Extraction

Meng Xiao et al.

Summary: Carbon nanodot-based logic gates have gained research attention for their response to various chemicals and biological inputs. This study successfully synthesized and adjusted three emissive CDs for logic operations, and encoded the information into QR codes for easy decoding. It demonstrates a pathway in molecular computing for multilevel logic operations and a convenient readout system for practical applications.

ACS APPLIED NANO MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Multicolor Phenylenediamine Carbon Dots for Metal-Ion Detection with Picomolar Sensitivity

Hani Barhum et al.

Summary: Studies have shown that phenylenediamine carbon dots prepared in an ethylene glycol environment exhibit multicolor high quantum yield, with solvothermal synthesis in acidic conditions leading to higher carbonization reaction yields, reaching up to 90% after product purification. The proximity of metal ions affects emission, with optical monitoring enabling accurate detection of ions at low concentrations.

ACS APPLIED NANO MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Rational Design of Surface-State Controlled Multicolor Cross-Linked Carbon Dots with Distinct Photoluminescence and Cellular Uptake Properties

Indrajit Srivastava et al.

Summary: This study presents a facile synthetic methodology for preparing multicolor carbon dots by controlling their optical properties through surface-state cross-linking of carboxylic acid groups. The changes in cellular internalization of these cross-linked CDs were demonstrated and validated using various characterization tools. Additionally, a triple-channel sensor array was fabricated to confirm the surface-state controlled PL mechanisms of these CDs for the identification of different analytes.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Construction of Carbon Dots with Color-Tunable Aggregation-Induced Emission by Nitrogen-Induced Intramolecular Charge Transfer

Xiaokai Xu et al.

Summary: This study reports the synthesis of carbon dots (CDs) with multicolor aggregation-induced emission, achieving a shift in fluorescence from green to red by increasing the C(sic)N content. The enhancement of ICT efficiency and fluorescence quantum yield by adjusting the C(sic)N content has led to applications in pattern encryption, white-LED devices, fingerprint detection, and protection against UV hazards for plants.

ADVANCED MATERIALS (2021)

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Review Chemistry, Multidisciplinary

Carbon Dots-Decorated Carbon-Based Metal-Free Catalysts for Electrochemical Energy Storage

Danlian Huang et al.

Summary: Carbon dots-decorated, carbon-based, metal-free catalysts have become a rapidly growing branch in the field of energy storage, requiring clarification of the electronic transmission mechanism and understanding the structure-performance relationship. The unique properties of CDs, such as quantum confinement effects and abundant defects, play a crucial role in facilitating electron transfer in CDs-C-MFCs.

SMALL (2021)

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Article Chemistry, Multidisciplinary

Rational Design of Multi-Color-Emissive Carbon Dots in a Single Reaction System by Hydrothermal

Boyang Wang et al.

Summary: This study reports a new type of full-color emission carbon dots material, and a simple, convenient hydrothermal preparation method guided by theoretical calculations has been developed, showing great potential for various applications.

ADVANCED SCIENCE (2021)

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Review Multidisciplinary Sciences

Insights into photoluminescence mechanisms of carbon dots: advances and perspectives

Lin Ai et al.

Summary: This article summarizes the categories and structural diversity of carbon dots, outlines three types of PL emission mechanisms related to structural differences, and briefly mentions the optical applications of carbon dots.

SCIENCE BULLETIN (2021)

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Article Materials Science, Multidisciplinary

Synthesis and modulation of multicolor fluorescent carbon dots from p-phenylenediamine and dansyl derivative for white light emitting diodes

L. B. O. Davi et al.

Summary: This study successfully synthesized carbon dots with tricolor emission, which can be used for the production of high-quality white-light emitting diode devices.

OPTICAL MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Color Emission Carbon Dots with Quench-ResixAstant Solid-State Fluorescence for Light-Emitting Diodes

Fanyong Yan et al.

Summary: Carbon dots with multicolor solid emission were prepared via a one-step solvothermal method, achieving solid-state emitting CDs with green, yellow, and orange colors and fluorescence spectrum ranging from 490-625 nm. The Si-O, Si-C, and Si-N bonds generated during the formation process prevented the pi-pi interaction, leading to the solid-state emission.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Article Chemistry, Multidisciplinary

Kilogram-Scale Synthesis and Functionalization of Carbon Dots for Superior Electrochemical Potassium Storage

Lin Li et al.

Summary: This study proposes a low-cost, high-efficiency method for the synthesis of carbon dots via aldol condensation, achieving functionalization with N-doping and NS double doping. Additionally, functionalized 1D carbon fibers for high-performance potassium storage anodes were designed, utilizing the controllable assembly of carbon dots induced by a Zn compound.

ACS NANO (2021)

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Article Chemistry, Multidisciplinary

Phosphorescence Tuning of Fluorine, Oxygen-Codoped Carbon Dots by Substrate Engineering

Liang Zhang et al.

Summary: The precise and reproducible phosphorescence tuning of F, O-codoped CDs is crucial for gradient anticounterfeiting applications. By utilizing substrate engineering techniques, the phosphorescence of CDs can be effectively controlled to emit bright yellow room-temperature phosphorescence, showing potential for a wide range of applications in the field of anti-counterfeiting.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Article Chemistry, Multidisciplinary

Solvent Effects on Fluorescence Properties of Carbon Dots: Implications for Multicolor Imaging

Xiaomin Huo et al.

Summary: Carbon dots were synthesized using four different solvents, with DMF identified as the key solvent affecting the fluorescence emission of the CDs, which could be enhanced by adding AA solvent. The different solvents had an impact on the functional group structures of the CDs, which in turn affected their optical properties.

ACS OMEGA (2021)

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Article Chemistry, Physical

Carbon dot with aggregation induced emission and pH triggered disintegration

Suman Nayak et al.

Summary: Aggregation Induced Emission (AIE) from Carbon Dots (CDs) is typically induced by hydrophobic interactions, but this study revealed AIE in predominantly hydrophilic pristine CDs. The emission from CDs shifted from yellow to blue in acidic and alkaline conditions, respectively, with irreversible changes observed in the latter. pH-triggered disintegration of CD aggregates in alkaline medium was observed through microscopic and Light Scattering studies.

COLLOID AND INTERFACE SCIENCE COMMUNICATIONS (2021)

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Article Optics

Dual emissive carbon dots with one-pot synthesized and their tunable luminescence

Yaoyao Yang et al.

Summary: In this study, dual photoluminescence carbon quantum dots were obtained using phenylenediamines and phosphorus acid with a one-step hydrothermal method. Tunable optical properties of CQDs can be achieved by changing the reaction temperature, carbon sources, and the surrounding pH value.

OPTIK (2021)

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Article Nanoscience & Nanotechnology

Multicolor Graphene Quantum Dots via Solvatochromic Tuning and Sulfur Doping for Light-Emitting Diodes

Yongsheng Yang et al.

Summary: This study reports a facile and green approach for rapid preparation of multicolor emission graphene quantum dots (GQDs), which were further used to develop a trace water-detecting platform and fabricate multicolor LED devices. The results demonstrate the potential of GQDs with solvatochromic tuning and sulfur doping for multicolor emission and various applications.

ACS APPLIED NANO MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Red, green, and blue light-emitting carbon dots prepared from gallic acid for white light-emitting diode applications

Menglin Chen et al.

Summary: Red, green, and blue CDs were successfully prepared using gallic acid as the raw material through a solvothermal method. The distinct optical features of these CDs are determined by the differences in the size of their sp(2)-domains, which can be controlled by reaction solvents.

NANOSCALE ADVANCES (2021)

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Article Materials Science, Multidisciplinary

Thermally Driven Amorphous-Crystalline Phase Transition of Carbonized Polymer Dots for Multicolor Room-Temperature Phosphorescence

Zifei Wang et al.

Summary: This study demonstrates the first multicolor room-temperature phosphorescence emission from carbon dots by utilizing a thermally driven amorphous-crystalline phase transition to achieve tunable emission colors. The development of carbonized polymer dots with potential applications as printable and writable security inks paves the way for the advancement of multicolor room-temperature phosphorescence materials.

ADVANCED OPTICAL MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Strategy to Synthesize Tunable Multiemission Carbon Dots and Their Multicolor Visualization Application

Panpan Zhu et al.

Summary: Research on multiemission fluorescent carbon dots excited at one wavelength has shown great promise due to their label-free property, easy synthesis, multicolor visualization, and ability to prevent background interference. A new template strategy using fluorescent precursors has been developed for the synthesis of multiemission carbon dots (M-CDs), which show three different emissions attributed to solvent, surface defect, and precursor luminophores. The M-CDs can meet optical requirements by adjusting the amount of NaOH or solvothermal synthesis time, demonstrating better capabilities than previously reported M-CDs. Additionally, a multicolor sensor using M-CDs and rhodamine B has been successfully utilized for cell imaging, showing a color evolution from dark blue to orange based on the pH value of the medium.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Nanoscience & Nanotechnology

Facile Synthesis of Water-Stable Multicolor Carbonized Polymer Dots from a Single Unconjugated Glucose for Engineering White Light-Emitting Diodes with a High Color Rendering Index

Yingnan Zhao et al.

Summary: This study successfully synthesizes multicolor fluorescent CPDs from a single unconjugated precursor, glucose, through a hydrothermal reaction, allowing for tunable emission wavelength and construction of LEDs in different colors, including white light-emitting diodes.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Red, green and blue aggregation-induced emissive carbon dots

Xiaokai Xu et al.

Summary: In this study, multicolor solid-state fluorescence carbon dots were successfully synthesized through a solvothermal reaction in acetic acid, enabling applications in white light LED devices and fingerprint detection.

CHINESE CHEMICAL LETTERS (2021)

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Review Chemistry, Inorganic & Nuclear

Carbon dots as a new class of nanomedicines: Opportunities and challenges

Boyang Wang et al.

Summary: Precise nanomedicine has been extensively explored for effective cancer imaging and treatment, with carbon dots being a new and highly interesting member of carbon-based nanomaterials in the field of nanomedicine. This review provides concise insights into the recent development of CDs in nanomedicine research, covering preparation, functionalization processes, and key applications.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Chemistry, Applied

Full color fluorescent carbon quantum dots synthesized from triammonium citrate for cell imaging and white LEDs

Qianyang Chang et al.

Summary: In this study, multicolor fluorescent carbon quantum dots (CDs) were synthesized through a solvothermal treatment using triammonium citrate as the carbon source. The emission mechanism was proposed to be surfacestate-controlled, with the CDs showing potential applications in biological imaging and LED technologies.

DYES AND PIGMENTS (2021)

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Article Chemistry, Physical

Study on the Origin of Fluorescence by Using Dual-Emission Carbon Dots

Jianliang Bai et al.

Summary: Dual-emission N-doped carbon dots were synthesized through a solvothermal reaction and the second emission band of N-CDs can be tuned by changing the polarity of the solvent, showing obvious solvent dependence. The findings greatly improve our understanding of the fluorescence origin of CDs and help guide future preparations of novel nanomaterials.

JOURNAL OF PHYSICAL CHEMISTRY C (2021)

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Article Materials Science, Multidisciplinary

The development of carbon dots: From the perspective of materials chemistry

Shuo Li et al.

Summary: The advancement in materials chemistry has significantly changed human lifestyle. Carbon dots, with their fascinating physicochemical properties, have been regarded as a groundbreaking carbon-based nanomaterial. However, the field of carbon dot-based materials chemistry remains incomplete due to their wide structural diversity, requiring further exploration. The review proposes novel viewpoints in this field and offers promising prospects for future developments.

MATERIALS TODAY (2021)

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Article Chemistry, Analytical

One-step synthesis of nitrogen-doped multi-emission carbon dots and their fluorescent sensing in HClO and cellular imaging

Chunxia Wang et al.

Summary: Tunable multicolor carbon dots with high quantum yield synthesized through a one-step hydrothermal approach exhibit bright blue, green, and yellow emissions. The optical properties of these CDs can be modulated by adjusting the nitrogen content on their surface structures, showing potential applications in HClO sensing and multicolor cellular imaging.

MICROCHIMICA ACTA (2021)

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Article Materials Science, Multidisciplinary

Multicolor Carbon Dots Prepared by Single-Factor Control of Graphitization and Surface Oxidation for High-Quality White Light-Emitting Diodes

Yuxin Zheng et al.

Summary: Preparing multicolor CDs with high fluorescence quantum yields through single-factor control is of great significance, and using multicolor CDs to fabricate standard white LEDs close to sunlight will significantly increase the practical application value of CDs.

ADVANCED OPTICAL MATERIALS (2021)

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Review Chemistry, Physical

Recent Progress of Quantum Dot-Based Photonic Devices and Systems: A Comprehensive Review of Materials, Devices, and Applications

Jaehyun Kim et al.

Summary: Photonic technologies have seen increased interest in high-performance sensor devices, particularly in the use of multifunctional photodetectors based on low-dimensional nanomaterials. Semiconducting quantum dots show promise for these applications due to their optical absorption coefficient, bandgap tunability, and compatibility with large-scale production processes. The research delves into materials, devices, applications, and hybrid device architectures to advance wearable photodetectors and neuromorphic applications. Challenges and opportunities for QD-based photonic devices are also discussed with a forward-looking perspective.

SMALL STRUCTURES (2021)

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Article Materials Science, Multidisciplinary

Regulating the photoluminescence of carbon dots via a green fluorine-doping-derived surface-state-controlling strategy

Tianze Li et al.

Summary: In this study, a green surface-state-controlling strategy was used to regulate the photoluminescence properties of carbon dots through fluorine (F)-doping techniques. Two types of F-doped carbon dots with different F contents were prepared, resulting in a red-shift of photoluminescence due to the narrower band gap induced by F-doping. FCDs1 showed favorable solid-state PL behaviors and was used for latent fingerprint identification, while FCDs2 with high F content was used as a powerful probe for the quantitative detection of cobalamin.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

Synthesis of color-tunable tannic acid-based carbon dots for multicolor/white light-emitting diodes

Yan Li et al.

Summary: Multicolor luminescent carbon dots were prepared by a solvothermal method using tannic acid and phthalaldehyde as carbon sources. The distinct optical features of these carbon dots are based on differences in the sizes of sp(2) domains, which can be governed by the structure of phthalaldehyde.

NEW JOURNAL OF CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Red, green, and blue light-emitting carbon dots prepared from o-phenylenediamine

Yulong An et al.

Summary: Red, green, and blue carbon dots (RGB CDs) were successfully synthesized with stable optical properties and significant photoluminescence characteristics. A white fluorescent CD solution was prepared by mixing these multicolor fluorescent CDs in appropriate proportions.

RSC ADVANCES (2021)

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Article Materials Science, Multidisciplinary

Red and green-emitting biocompatible carbon quantum dots for efficient tandem luminescent solar concentrators

Yi Han et al.

Summary: Luminescent solar concentrators (LSCs) are large-scale sunlight collectors with low-cost and semi-transparency, showing great potential for building integrated photovoltaics. Red-emitting C-dots produced by low-cost and environmentally-friendly precursors have high quantum yield and are promising for environmentally compatible LSCs.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Chemistry, Multidisciplinary

Well-separated water-soluble carbon dots via gradient chromatography

Vanessa Michaud et al.

Summary: Carbon dots (CDs) are highly fluorescent materials used in bioimaging, sensors, and luminescent displays. This study successfully separated all components of CDs by two-step gradient chromatography, showing that amorphous and crystalline CDs coexist in the same suspension. High performance liquid chromatography (HPLC) was used to further improve purification efficiency and automate the process, achieving separation of up to six components.

NANOSCALE (2021)

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Article Chemistry, Multidisciplinary

Silica-coupled carbon nanodots: multicolor fluorescence governed by the surface structure for fingerprint recognition and WLED devices

Zhenxing Qin et al.

Summary: A one-pot solvothermal method is reported for synthesizing S,N-codoped and Si-coupled solid-state carbon nanodot composites, which can adjust the surface structure of the composites, resulting in PL emission colors shifting from blue to green to olivine, with the green-emitting composite having the highest fluorescence quantum yield and can be used for fingerprint detection and LED device fabrication, achieving a very high color rendering index.

NEW JOURNAL OF CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Red and yellow emissive carbon dots integrated tandem luminescent solar concentrators with significantly improved efficiency

Jiurong Li et al.

Summary: This study achieved efficient solar-to-electricity conversion by preparing luminescent carbon dots with high quantum yield, combining different colored dots to fabricate a large-area tandem LSC. The novel tandem structure design, suitable for real structural applications like keeping windows warm, demonstrates high conversion efficiency while utilizing eco-friendly carbon dots as fluorophores.

NANOSCALE (2021)

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Article Chemistry, Multidisciplinary

Red, orange, yellow and green luminescence by carbon dots: hydrogen-bond-induced solvation effects†

Xiaokai Xu et al.

Summary: This article reports a solvated chromogenic carbon dots with luminescence exhibiting a regular redshift in various solvents, which is attributed to the linking of CD surfaces to solvents through hydrogen bonds, leading to different surface level states and energy resonance transfer efficiencies. CDs/B2O3 composite shows excellent fluorescence thermal stability and has the potential for manufacturing white-light-emitting devices with a high color rendering index, while the solvation effects of CDs have prospects in detecting water content in organic solvents. Additionally, CDs are applied in cell imaging and positioning, showing significant prospects in biological fields.

NANOSCALE (2021)

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Article Chemistry, Multidisciplinary

Multicolor polymeric carbon dots: synthesis, separation and polyamide-supported molecular fluorescence

Bo Zhi et al.

Summary: The study synthesized multicolor polymeric CDs through solvothermal treatment and separated them using an automated reversed-phase column method. The detailed investigation on the physicochemical properties and fluorescence origins of different color fractions was conducted through experimental and computational methods. The results provide insights into the photoluminescence mechanism of multicolor CDs for future design and applications.

CHEMICAL SCIENCE (2021)

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Review Chemistry, Multidisciplinary

Recent Advances in Functionalized Carbon Dots toward the Design of Efficient Materials for Sensing and Catalysis Applications

Namasivayam Dhenadhayalan et al.

SMALL (2020)

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Article Spectroscopy

Multicolor emissive sulfur, nitrogen co-doped carbon dots and their application in ion detection and solid lighting

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Design of Red Emissive Carbon Dots: Robust Performance for Analytical Applications in Pesticide Monitoring

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Multicolor carbon dots with concentration-tunable fluorescence and solvent-affected aggregation states for white light-emitting diodes

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Carbon Dots in Porous Materials: Host-Guest Synergy for Enhanced Performance

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Photoluminescence-tunable carbon dots from synergy effect of sulfur doping and water engineering

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Luminescent carbon dots with concentration-dependent emission I in solution and yellow emission in solid state

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Novel Processing for Color-Tunable Luminescence Carbon Dots and Their Advantages in Biological Systems

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Smartphone-Based Fluorescence Detection of Al3+ and H2O Based on the Use of Dual-Emission Biomass Carbon Dots

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Wide emission shifts and high quantum yields of solvatochromic carbon dots with rich pyrrolic nitrogen

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Controlled Synthesis of Long-Wavelength Multicolor-Emitting Carbon Dots for Highly Efficient Tandem Luminescent Solar Concentrators

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Ethanothermal synthesis of phenol-derived carbon dots with multiple color emission via a versatile oxidation strategy

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A Universal Strategy for Activating the Multicolor Room-Temperature Afterglow of Carbon Dots in a Boric Acid Matrix

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Multicolor photoluminescent carbon nanodots regulated by degree of oxidation for multicolor patterning, invisible inks, and detection of metal ions

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Bright and Multicolor Chemiluminescent Carbon Nanodots for Advanced Information Encryption

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Solid-State Fluorescent Carbon Dots with Aggregation-Induced Yellow Emission for White Light-Emitting Diodes with High Luminous Efficiencies

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Ultrabright Full Color Carbon Dots by Fine-Tuning Crystal Morphology Controllable Synthesis for Multicolor Bioimaging and Sensing

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Ultrasensitive Fluorometric Angling Determination of Staphylococcus aureus in Vitro and Fluorescence Imaging in Vivo Using Carbon Dots with Full-Color Emission

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Fluorescence Solvatochromism of Carbon Dot Dispersions Prepared from Phenylenediamine and Optimization of Red Emission

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The effect of solvent polarity on emission properties of carbon dots and their uses in colorimetric sensors for water and humidity

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Facile Approach To Synthesize Nitrogen- and Oxygen-Rich Carbon Quantum Dots for pH Sensor, Fluorescent Indicator, and Invisible Ink Applications

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Acid Oxidation of Muskmelon Fruit for the Fabrication of Carbon Dots with Specific Emission Colors for Recognition of Hg2+ Ions and Cell Imaging

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Betel-derived nitrogen-doped multicolor carbon dots for environmental and biological applications

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Carbon quantum dot-based composites for energy storage and electrocatalysis: Mechanism, applications and future prospects

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Full-color emissive carbon-dots targeting cell walls of onion for in situ imaging of heavy metal pollution

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Direct blending of multicolor carbon quantum dots into fluorescent films for white light emitting diodes with an adjustable correlated color temperature

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Fe3+-Catalyzed low-temperature preparation of multicolor carbon polymer dots with the capability of distinguishing D2O from H2O

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Concentration-dependent multicolor fluorescent carbon dots for colorimetric and fluorescent bimodal detections of Fe3+ and l-ascorbic acid

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pH-Responsive Mn-Doped Carbon Dots for White-Light-Emitting Diodes, Fingerprinting, and Bioimaging

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Recent Advances in Synthesis, Optical Properties, and Biomedical Applications of Carbon Dots

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Design and fabrication of carbon dots for energy conversion and storage

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CHEMICAL SOCIETY REVIEWS (2019)

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Preparation of N-doped yellow carbon dots and N, P co-doped red carbon dots for bioimaging and photodynamic therapy of tumors

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Multi-color carbon dots for white light-emitting diodes

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Biomass-Derived Carbon Dots and Their Applications

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Solvent-controlled and solvent-dependent strategies for the synthesis of multicolor carbon dots for pH sensing and cell imaging

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Solvent-controlled synthesis of multicolor photoluminescent carbon dots for bioimaging

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Temperature- controlled spectral tuning of fullcolor carbon dots and their strongly fluorescent solid- state polymer composites for light- emitting diodes

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Visual multiple color emission of solid-state carbon dots

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Full color carbon dots through surface engineering for constructing white light- emitting diodes

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Color-Tunable Carbon Dots Possessing Solid-State Emission for Full Color Light-Emitting Diodes Applications

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beta-C3N4 Nanocrystals: Carbon Dots with Extraordinary Morphological, Structural, and Optical Homogeneity

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Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging

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Emitting color tunable carbon dots by adjusting solvent towards light-emitting devices

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NANOTECHNOLOGY (2018)

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Microwave-assisted one-step synthesis of white light-emitting carbon dot suspensions

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Solvent-Controlled Synthesis of Highly Luminescent Carbon Dots with a Wide Color Gamut and Narrowed Emission Peak Widths

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Engineering triangular carbon quantum dots with unprecedented narrow bandwidth emission for multicolored LEDs

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Solvent-dependent carbon dots and their applications in the detection of water in organic solvents

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Exploration of the synthesis of three types of multicolor carbon dot originating from isomers

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Red, green, and blue fluorescent folate-receptor-targeting carbon dots for cervical cancer cellular and tissue imaging

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MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS (2018)

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Orange, yellow and blue luminescent carbon dots controlled by surface state for multicolor cellular imaging, light emission and illumination

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MICROCHIMICA ACTA (2018)

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Inorganic Salt Incorporated Solvothermal Synthesis of Multicolor Carbon Dots, Emission Mechanism, and Antibacterial Study

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Porphyrin-Implanted Carbon Nanodots for Photoacoustic Imaging and in Vivo Breast Cancer Ablation

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Bright Multicolor Bandgap Fluorescent Carbon Quantum Dots for Electroluminescent Light-Emitting Diodes

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Characteristic Excitation Wavelength Dependence of Fluorescence Emissions in Carbon Quantum Dots

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Photoluminescence mechanism in graphene quantum dots: Quantum confinement effect and surface/edge state

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Full-Color Inorganic Carbon Dot Phosphors for White-Light-Emitting Diodes

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N-doped carbon-dots for luminescent solar concentrators

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Facile preparation of full-color emissive carbon dots and their applications in imaging of the adhesion of erythrocytes to endothelial cells

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Facile synthesis of multicolor photoluminescent polymer carbon dots with surface-state energy gap-controlled emission

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JOURNAL OF MATERIALS CHEMISTRY C (2017)

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Towards efficient dual-emissive carbon dots through sulfur and nitrogen co-doped

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Full-Color Emission Polymer Carbon Dots with Quench-Resistant Solid-State Fluorescence

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Multicolor Functional Carbon Dots via One-Step Refluxing Synthesis

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A facile and universal strategy for preparation of long wavelength emission carbon dots

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DALTON TRANSACTIONS (2017)

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Graphitic Nitrogen Triggers Red Fluorescence in Carbon Dots

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ACS NANO (2017)

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Long-wavelength, multicolor, and white-light emitting carbon-based dots: Achievements made, challenges remaining, and applications

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CARBON (2017)

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Review Chemistry, Multidisciplinary

Carbon dots as photosensitisers for solar-driven catalysis

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CHEMICAL SOCIETY REVIEWS (2017)

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53% Efficient Red Emissive Carbon Quantum Dots for High Color Rendering and Stable Warm White-Light-Emitting Diodes

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ADVANCED MATERIALS (2017)

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Construction of full-color light-emitting N-based carbon nanodots and their efficient solid-state materials via tape-casting technology for warm WLED

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CHEMICAL ENGINEERING JOURNAL (2017)

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Carbon dots: Biomacromolecule interaction, bioimaging and nanomedicine

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COORDINATION CHEMISTRY REVIEWS (2017)

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