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Review
Chemistry, Multidisciplinary
Shuang Jiang et al.
Summary: Chiral inorganic nanostructures have a strong interaction with photons, leading to a change in their polarization state and the emission of circularly polarized light. Understanding these polarization effects is important for various chemical and biological processes, as well as the development of chiral photonics. The interpretation of these effects is dependent on the structural parameters of the nanostructures, and there are different types of nanomaterials that exhibit either dominant circularly polarized luminescence or circularly polarized scattering.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Kaiti Wang et al.
Summary: As a type of room temperature phosphorescence (RTP) material, carbon dots (CDs) have short lifetime and low phosphorescence efficiency. Various strategies have been developed to improve these disadvantages, including embedding in rigid matrix, introducing heteroatom, and crosslink-enhanced emission. Doping CDs into different matrices is the main method for preparing long-lived CDs-based RTP materials. However, matrix-free CDs and carbonized polymer dots-based RTP materials have also been widely explored. The recent progress, efficient strategies, and emission mechanisms of CDs-based RTP materials are summarized and reviewed in detail. These materials show great application potential in anti-counterfeiting, data encryption, and biological monitoring due to their excellent chemical stability, photostability, and low biological toxicity.
Review
Chemistry, Multidisciplinary
Xuetao Yan et al.
Summary: Chiral carbon dots (CDs) are a new luminescent zero-dimensional carbon-based nanomaterial with chirality, which exhibit highly symmetrical chiral optical characteristics and have broad applicability in enantioselectivity, asymmetric catalysis, and biomedicine. The exploration of the excited state chirality of CDs has led to the development of circularly polarized luminescence (CPL) properties, enabling new applications such as chiral light source recognition and anti-counterfeit printing. This review focuses on the synthesis approaches of chiral CDs and their emerging applications in CPL, biosensing, and biological effect, while also discussing potential challenges and future opportunities.
Article
Chemistry, Multidisciplinary
Shuo Ma et al.
Summary: Efficient circularly polarized fluorescence (CPF) and circularly polarized room-temperature phosphorescence (CPRTP) emissions are achieved in a C-dots/chiral helical polymer bilayer composite film by utilizing the chiral filter effect of the chiral helical polymer. The intense CPF and CPRTP emissions with large dissymmetric factors of 1.4 x 10-1 and 1.2 x 10-2, respectively, are obtained even with a simple interface contact between the C-dots layer and the chiral helical polymer layer. Furthermore, white-color CPF emission, multiple information display, and encryption are realized based on the prepared chiral luminescent composite films.
Review
Chemistry, Multidisciplinary
Xujie Wang et al.
Summary: Circularly polarized luminescence (CPL) materials, particularly circularly polarized phosphorescence (CPP) materials with long life-time, have gained significant attention for their promising applications. This review summarizes the recent advances of CPP materials, including transition metal complexes, organic small molecules, polymers, and organic/inorganic hybrid materials. It also highlights the applications of CPP materials in organic light-emitting diodes and encryption display, and discusses the current challenges and future perspectives for the rational design of advanced CPP materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yiping Liu et al.
Summary: This review systematically summarizes and discusses the application-guided design strategies of circularly polarized light (CPL)-responsive materials. CPL illumination enables the direct synthesis of helical polymers and chiral inorganic nanostructures, and their intramolecular folding and self-assembly are modulated by light. In the aggregated state and liquid crystal phase, the helical sense of molecular packing is sensitive to the enantiomeric bias brought by CPL, achieving chiral amplification. Furthermore, applications of CPL detection and biomedical applications are discussed.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Deliang Wang et al.
Summary: By doping organic materials with color-tunable and time-dependent long persistent luminescence, the encryption level can be improved, leading to promising applications in anti-counterfeiting.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Shengju Zhou et al.
Summary: This review summarizes the important progress made in room temperature phosphorescence (RTP) carbon dots (CDs), including their synthetic strategies, performance regulation, and potential applications in anti-counterfeiting, information encryption, sensing, light-emitting diodes, and biomedicine. The remaining major challenges for RTP CDs are discussed and new opportunities in the future are proposed.
Review
Chemistry, Multidisciplinary
Huixian Shi et al.
Summary: Carbon dots (CDs) have emerged as a new generation of nano-luminescent materials and attracted extensive attention due to their excellent optical properties, wide source of raw materials, low toxicity, and good biocompatibility. However, systematic summaries on CDs with persistent luminescence are rare. This article provides a summary of recent progress on persistent luminescent CDs, including luminous mechanism, synthetic strategies, property regulation, and potential applications.
Review
Chemistry, Physical
Chengyu Zheng et al.
Summary: Carbon dots (CDs) are studied for their luminescent properties, particularly the room-temperature phosphorescence (RTP) properties of carbonized polymer dots (CPDs). The polymer structures of CPD materials are crucial in facilitating the RTP emission by immobilizing subluminophores and protecting triplet excited states. The crosslink-enhanced emission (CEE) effect is proposed to explain the RTP emission and provides a strategy for immobilizing CPDs. CPD materials have promising applications.
Article
Chemistry, Multidisciplinary
Shuo Ma et al.
Summary: This study successfully achieved efficient CPF and CPRTP emissions in C-dots/chiral helical polymer bilayer composite film, and further realized white-color CPF emission and multiple information display and encryption.
Review
Chemistry, Physical
Jianjian Zhao et al.
Summary: This Mini-review summarizes recent progress in the regulation and amplification of CPL-active materials in multicomponent coassembled systems, discussing the interactions between different components and the application of photophysical methods.
Article
Chemistry, Multidisciplinary
Swadhin Garain et al.
Summary: This study introduces a chiral bischromophoric phosphor design that achieves ambient circularly polarized luminescence (CPL) emission by appending molecular phosphors to a chiral core.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Hui Li et al.
Summary: The authors developed a strategy to achieve multicolor circularly polarized organic afterglow (CPOA) by inserting a chirality center into a non-conjugated organic cluster. This approach enabled highly efficient and significantly tuned CPOA emissions from blue to yellowish-green with dissymmetry factor over 2.3 x 10(-3) and lifetime up to 587 ms under different excitation wavelengths, showcasing the potential for diverse applications in CPL and RTP materials.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xiaofeng Sun et al.
Summary: In this study, yellow-emissive carbon quantum rings with highly efficient solid-state fluorescence were prepared and integrated into a warm white light-emitting diode. The resulting warm WLED showed favorable white light characteristics and good color chromatics stability. This work provides a facile strategy for developing environmentally friendly, cost-effective, and high-performance materials for warm WLED applications.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Wenbin Huang et al.
Summary: In this study, a new bidibenzo[b,d]furan compound was reported to exhibit strong circularly-polarized RTP when doped into a rigid polymer matrix. The absolute chiral R-isomer could be separated using a simple silica-gel column. The treated films showed high RTP efficiency, dissymmetric factor, and lifetime under ambient conditions. It was found that reducing nonradiative decays could enhance circularly-polarized RTP emission.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Simone Di Noja et al.
Summary: This paper reports the synthesis, purification, and characterization of chiral carbon nanodots using atropoisomeric precursors. The obtained carbon nanodots are soluble in organic solvents and exhibit good thermal stability, making them suitable for technological applications. By incorporating axially chiral precursors and 1,4-benzoquinone as a doping agent, green-emissive carbon dots with circularly polarized luminescence are achieved. The introduction of axial chirality expands the strategies for tailoring the properties of carbon nanodots, enabling the development of carbon nanoparticles with both good processability in organic solvents and engineered chiroptical properties.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Ying-Xue Yuan et al.
Summary: Artificial systems for sequential chirality transmission/amplification and energy relay are perpetual topics that entail learning from nature. However, engineering chiral light-harvesting supramolecular systems remains a challenge. In this study, the researchers developed new chiral light-harvesting systems with a sequential Forster resonance energy transfer process, achieving chirality transmission/amplification and energy transfer, providing a new direction for chiroptical physics and chemistry.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Yan Zheng et al.
Summary: This study presents a feasible strategy for achieving high stability and full-color long-lived room temperature phosphorescence (RTP) of carbon dots (CDs)-based composite materials in aqueous environment by constructing a rigid hydrogen bonds' network. The obtained m,p-CDs@CA composite materials exhibit excellent stability, dispersion, and long-lived RTP properties, making them desirable for biomarker detection.
Article
Chemistry, Multidisciplinary
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)
Review
Optics
Aaron Doring et al.
Summary: Carbon dots are luminescent carbonaceous nanoparticles with chiral properties, making them particularly interesting for biomedical applications due to their low cytotoxicity and facile synthesis. Recent efforts have led to the creation of chiral carbon dots with attractive optical properties such as two-photon absorption and circularly polarized light emission. The review covers examples of molecular chirality, characterization using chiroptical spectroscopy, methods to induce chirality in nanomaterials, fabrication techniques for chiral carbon dots, their morphology and optical properties, as well as emerging applications in sensing, bioimaging, and catalysis.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Multidisciplinary Sciences
Hao Peng et al.
Summary: We have successfully modulated the afterglow emission color in water-soluble polymer systems through phosphorescence Forster resonance energy transfer (FRET) technique, achieving full-color afterglow emission from blue to red and even white. This study provides important guidance in developing high-performance afterglow polymers with on-demand color tuning ability for optoelectronic applications.
Review
Chemistry, Multidisciplinary
Yankai Dai et al.
Summary: Chiral materials related to circularly polarized luminescence (CPL) are of great interest due to their potential applications in various fields. In this review, the latest advances in CPL materials based on biomolecules are discussed, including their chiral construction and emerging applications. The challenges and prospects of bio-based CPL materials are also addressed.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Boyang Wang et al.
Summary: There is a growing interest in finding alternative materials with room-temperature phosphorescence (RTP) for various applications. Carbon dots (CDs) are found to possess the desired characteristics, and their RTP mechanism has been investigated in this study. By crosslinking and coating the CDs, their RTP properties can be enhanced. A design rule has also been proposed to tune the quantum yields and RTP lifetime of CDs. This finding provides a flexible route for developing CDs with tailored RTP properties.
Article
Chemistry, Multidisciplinary
Huixian Shi et al.
Summary: A new type of full-color-tunable ultralong phosphorescence carbon dots without matrix-assistance have been reported, which have potential applications in information encryption, light detection, and LED devices.
Review
Chemistry, Multidisciplinary
Chunyuan Kang et al.
Summary: The luminescence mechanism of carbonized polymer dots (CPDs) is discussed in this review, with emphasis on their aggregation behavior. CPDs, as a new kind of luminescent nanomaterials, inherit the stability and biocompatibility of carbon materials, and possess the luminescence tunability, water solubility, and high photoluminescence quantum yield of organic luminescent materials. The review summarizes the special luminescence phenomena of CPDs in the aggregate state and discusses relevant mechanisms to consolidate relevant statements.
Review
Materials Science, Multidisciplinary
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.
Article
Chemistry, Multidisciplinary
Long Gu et al.
Summary: The study demonstrates that circularly polarized organic phosphorescence (CPP) can be achieved by incorporating axial chiral chromophores into polymer chains, with copolymers showing a maximum CPP efficiency of 30.6% and a lifetime of 0.68 seconds. These copolymers have promising potential applications in information encryption and displays.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Multidisciplinary
Zhong-Liang Gong et al.
Summary: Research in circularly polarized luminescence has recently gained widespread interest, focusing on the development of chiral materials with high luminescence efficiency and dissymmetry factors, as well as their applications in optoelectronic devices. This review summarizes the latest advancements in this field, including the development of various chiral emissive materials and the utilization of these materials in organic light-emitting devices and other applications.
SCIENCE CHINA-CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yi Ru et al.
Summary: This study reports the synthesis of red- and multicolor-emitting Ch-CPDs using common precursors and a solvothermal approach, achieving high quantum yield and circularly polarized luminescence. Additionally, circularly polarized white-emitting CPDs were fabricated for the first time by tuning the mixing ratio of colored Ch-CPDs in a gel, opening up exciting opportunities for designing functional chiroptical materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Optics
Yongjing Deng et al.
Summary: This article summarizes the recent progress of CPL from organic micro-/nano-structures, outlining the design principles and external stimuli that can regulate CPL performance. It introduces several typical organic micro-/nano-structures with CPL activity and summarizes their applications in organic light-emitting diodes, optical information processing, and chemical and biological sensing.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Cheng Zhang et al.
Summary: By introducing nitrogen heterocycles and coordinating with metal ions, room-temperature phosphorescent carbon dots have been successfully developed for applications in information encryption and anti-counterfeiting.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Yue Wu et al.
Summary: A unique CPL transmission method using circularly polarized fluorescence resonance energy transfer (C-FRET) has been discovered, showing significant potential for various applications. This mode provides a novel strategy concept for high-level information processing.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Optics
Qingsen Zeng et al.
Summary: Carbon dots (CDs) have garnered significant attention in the past decade for being easy-to-prepare, non-toxic, and customizable fluorescent nanomaterials. They can be categorized into three subgroups based on their morphology and chemical structure, with detailed structures varying significantly, especially in chemically synthesized CPDs. Proper nomenclature is crucial for the better utilization of the diverse structures and properties of CPDs.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Zifei Wang et al.
Summary: This study presents a fast processable one-step synthetic approach for the preparation of N and P codoped ultra-long-lived room-temperature phosphorescent carbon dots, which show significant potential in information encoding applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Hui Li et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Kai Jiang et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Zifei Wang et al.
Review
Chemistry, Multidisciplinary
Tonghan Zhao et al.
ACCOUNTS OF CHEMICAL RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
Mingcong Xu et al.
Article
Chemistry, Multidisciplinary
Kai Jiang et al.
Article
Chemistry, Multidisciplinary
Ya-Chuan Liang et al.
Article
Chemistry, Multidisciplinary
Yi Ru et al.
Article
Chemistry, Multidisciplinary
Lukang Ji et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Multidisciplinary
Kai Jiang et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2018)
Article
Chemistry, Multidisciplinary
Feng Li et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2018)
Article
Chemistry, Multidisciplinary
Songyuan Tao et al.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2018)
Article
Biochemistry & Molecular Biology
Xueyu Dou et al.
Article
Multidisciplinary Sciences
Yan Su et al.
Article
Chemistry, Multidisciplinary
Zifei Wang et al.
ADVANCED MATERIALS
(2017)
Article
Chemistry, Physical
Qijun Li et al.
CHEMISTRY OF MATERIALS
(2016)
Article
Chemistry, Physical
Magdalena Pecul et al.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2011)
