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Article
Materials Science, Multidisciplinary
Dan Zhao et al.
Summary: This paper reports the preparation of chiral carbon dots (CDs) using chiral amino acids as carbon sources through two different methods. The antibacterial abilities of the chiral CDs prepared by different carbon sources and synthesis methods were explored. The research provides a foundation for the preparation, characterization, and application of chiral CDs, as well as novel targeting antibacterial applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Ya Jie Fan et al.
Summary: A ratiometric fluorescence sensor using europium-doped carbon dots (Eu-CDs) as probes was developed for detecting tetracyclines under alkaline conditions. The sensor showed a wider linear detection range compared to reported europium ions-based tetracyclines sensors. A smartphone with RGB color picker was employed to analyze the concentration of tetracyclines, providing a new visual detection method. The accuracy of the sensor was comparable to the China national standard method, and it has promising applications in the real-time monitoring of tetracyclines in food and the environment.
ANALYTICA CHIMICA ACTA
(2023)
Article
Engineering, Environmental
Shanshan Wei et al.
Summary: Amino acids are crucial in various physiological processes and the accurate monitoring of their metabolism remains a challenge. This study successfully synthesized multi-color emission carbon dots (CDs) that demonstrated bright and steady luminescence. These CDs exhibited low cytotoxicity and excellent multi-color cell imaging ability. Specifically, chiral red emissive CDs (R-L-CDs) were able to quickly identify specific amino acids in water and biological samples. The introduction of a smart phone color recognizer application improved the accuracy of visual detection. Overall, these findings have far-reaching prospects for the application of R-L-CDs as biosensors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Biochemical Research Methods
Xiang Li et al.
Summary: Chiral carbon quantum dots (cCQDs) are emerging as a novel carbon nano-functional material with tunable emission wavelength, excellent photostability, low toxicity, biocompatibility, and chirality, and they are gaining increasing importance in the fields of chemistry, biology, and medicine. This paper reviews the preparation methods, optical properties, and applications of cCQDs in chiral catalysis, chiral recognition, targeted imaging, and other areas, while discussing the challenges and issues in their research. Finally, the promising fluorescence and other properties suggest that cCQDs have broad commercial prospects in future applications.
JOURNAL OF FLUORESCENCE
(2023)
Article
Chemistry, Analytical
Eman A. Elshenawy et al.
Summary: A rapid and selective fluorescent probe for determination of tilmicosin has been developed based on nitrogen and sulfur co-doped CDs. The probe showed good performance in detecting tilmicosin in oral solution and pasteurized milk.
Article
Nanoscience & Nanotechnology
Yongzhen Yang et al.
Summary: The fibrillization and deposition of hIAPP are pathological features of T2DM. Currently, nanoparticle-assisted inhibitors can only disassemble fibrotic amyloids into more toxic oligomers/protofibrils. Here, we propose cysteine-derived chiral CQDs that target plasmin, a natural fibrinolytic enzyme. L-CQDs enhance plasmin activity, promoting hIAPP cleavage and protecting fi-cells. D-CQDs inhibit proteolysis, reducing plasmin activity and may be beneficial for hyperfibrinolytic conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Yi Ru et al.
Summary: Chiral carbon dots (Ch-CDs) were used to induce full-color circularly polarized luminescence (CPL) in CsPbX3 nanocrystals (NCs). Ch-CDs-CsPbBr3 NCs were successfully synthesized through ligand-assisted coprecipitation at room temperature. The combination of perovskites and Ch-CDs paves the way for the design of new chiral perovskite materials for multifunctional applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Zhiwei Zhang et al.
Summary: In this study, a facile method was proposed to assemble carbon dots (CDs) with G-quartet hydrogels, forming composite materials with circularly polarized luminescence (CPL) activity. The helical chiral structure and CPL orientation of the composites can be switched back and forth reversibly, and their potential applications in anti-counterfeiting printing and encrypted information transfer were demonstrated.
Article
Nanoscience & Nanotechnology
Zahra Hallaji et al.
Summary: In this study, red-emitting chiral carbon dots (RC-CDs) were synthesized via solvothermal method and used for water detection using UV-Vis, fluorescence, and circular dichroism methods. The results showed that RC-CDs exhibited remarkable linearity in response to changes in water content in ethanol, and the use of chiral CDs in circular dichroism detection has not been reported before.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Applied
Xin Li et al.
Summary: In this study, an ingenious method for detecting trace amounts of ascorbic acid (AA) was presented using a fluorescent sensing system. The system was composed of periodate (IO4 ) and nitrogen-boron co-doped carbon dots (N, B-CDs). Highly photoluminescent carbon dots were synthesized using a one-step hydrothermal method, and the fluorescence of N, B-CDs was statically quenched by IO4 . By pre-adding ascorbic acid, the fluorescence quenching process was inhibited, allowing for the detection of AA with an extremely low limit of detection.
Article
Chemistry, Applied
Jingjing Chen et al.
Summary: Highly photoluminescent N-doped carbon quantum dots (N-CDs) with a quantum yield of 63% were prepared through hydrothermal treatment. The obtained N-CDs exhibited uniform particle size distribution, superior stability in high-salt conditions, and excellent sensitivity. A green fluorescence probe based on N-CDs was successfully utilized for ultrasensitive determination of myricetin in vine tea, showing great potential for myricetin screening.
Article
Chemistry, Physical
Soma Khezri et al.
Summary: A fluorescence off-on system was developed for uric acid analysis in urine using fluorescein, H2O2, and gold nanoparticles (Au NPs). The system showed quenched fluorescence in the presence of Au NPs and H2O2, but restored fluorescence when uric acid was added due to its interaction with H2O2. The system exhibited linear dependence on uric acid concentration in the range of 0.3-8.0 μg.mL(-1), with a detection limit of 0.12 μg.mL(-1). The results compared to a standard method showed high compatibility and potential for uric acid analysis in urine samples.
Article
Chemistry, Analytical
Wensu Gao et al.
Summary: In this study, N, S-CQDs were prepared and used for the detection of mercury ions and permanganate ions based on their unique fluorescence characteristics. N, S-CQDs exhibited high fluorescence intensity, good optical stability, and tunable emission wavelength. The fluorescence of N, S-CQDs can be selectively quenched and restored by halogen ions and Fe2+, respectively, providing a simple, low-cost, and visually intuitive ion detection method.
ANALYTICA CHIMICA ACTA
(2023)
Article
Nanoscience & Nanotechnology
Wan Ji et al.
Summary: In this study, multifunctional dual-emissive near-infrared carbon dots (dNIR-CDs) with intense NIR excitation/emission were synthesized and used to construct a ratiometric nanosensor for rapid and sensitive detection of lysozyme (LYZ). The developed nanosensor exhibited a wide linear response and a reproducible detection limit for LYZ, and it has the potential for trace-level detection in complicated human urine samples and high throughput cell imaging.
ACS APPLIED NANO MATERIALS
(2022)
Article
Pharmacology & Pharmacy
Qianqian Huang et al.
Summary: Blue-fluorescent carbon quantum dots, synthesized from green source alkali-soluble Poria cocos polysaccharide using a one-step hydrothermal method, exhibit good fluorescence stability and water solubility, and can be used as a label-free nanosensor for high-sensitivity detection of Cr(VI).
JOURNAL OF PHARMACEUTICAL ANALYSIS
(2022)
Article
Chemistry, Applied
Xinyang Sun et al.
Summary: A novel fluorescence probe N,S-CDs@Cu2+ system was developed for determining glutathione (GSH) content in vegetables, showing good consistency and stability compared to traditional methods. The probe effectively and efficiently recovers quenched fluorescence in the presence of GSH, demonstrating its validation and novelty for GSH detection in vegetables.
Article
Optics
Zhenxu Lin et al.
Summary: The photoluminescence and amplified spontaneous emission of carbon dots can be significantly improved through the doping of sodium ions. The introduction of Na ions not only eliminates oxygen related defects but also creates new defect centers, resulting in deep blue photoluminescence with reduced bandwidth and enhanced quantum yield. We establish a luminescence model to explain the photoluminescence dynamics of Na+-doped carbon dots and demonstrate for the first time the amplified spontaneous emission from such carbon dots.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Analytical
Lin Yuan et al.
Summary: In this article, the use of dual-emission carbon dots (CDs) with orange-yellow fluorescence for the detection of L-glutamic acid (L-Glu) is reported for the first time. The CDs were synthesized through a facile hydrothermal route and showed changes in fluorescence intensity in the presence of L-Glu. These findings suggest that CDs have potential applications in biomedical research.
Article
Chemistry, Multidisciplinary
Yan Zhao et al.
Summary: This study successfully synthesized nitrogen and fluorine co-doped carbon dots (NFCDs) using a rapid and low-cost method. The NFCDs exhibited intense fluorescence and high quantum yield. Additionally, they were applied for the selective detection of Fe3+ and ascorbic acid. Therefore, this research is of great importance for the convenient and rapid detection of Fe3+ and ascorbic acid in environmental samples.
Article
Chemistry, Analytical
Yasaman Sefid-Sefidehkhan et al.
Summary: In this study, CQDs co-doped with phosphorus and chlorine were successfully synthesized using a hydrothermal technique. The synthesized CQDs, with a mean size of < 20 nm, exhibited excitation-independent features. The fluorescence intensity of the CQDs was significantly quenched in the presence of Pb2+, forming a stable non-luminescent complex. This mechanism provided a fluorescent platform for the detection of Pb2+ ions in water samples. Additionally, the addition of gentamicin to the P, Cl-CQDs + Pb system further enhanced the quenching effect on the CQDs' fluorescence, leading to a new probe for gentamicin determination.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Min Wang et al.
Summary: This study presents a new method for the synthesis of chiral carbon dots (CCDs) and demonstrates their excellent performance in chiral recognition and fluorescence sensing. Through experiments and theoretical calculations, the response mechanism and chiral optical activity of CCDs have been elucidated in detail.
Article
Nanoscience & Nanotechnology
Mengling Zhang et al.
Summary: Chiral carbon dots (CDs) were obtained by thermal polymerization of chiral amino acids and citric acid, with the handedness of chirality controlled by adjusting the reaction temperature, leading to different kinds of surface modifications. Aliphatic amino acids resulted in CDs with the same handedness at different temperatures, while aromatic amino acids produced CDs with maintained or inversed handedness based on the temperature adjustment.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Xiudan Hou et al.
Summary: A fluorescent chiral recognition method based on CCQDs was developed to distinguish Ile enantiomers effectively. The method can quantitatively detect L-Ile and determine the percentage of enantiomers accurately.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Wenyan Ma et al.
Summary: This study presents a hydrothermal method to fabricate chiral CDs using amino acid enantiomers as precursors, resulting in CDs with excitation-dependent blue fluorescence and opposite optical rotation in solutions modulated by concentrations of CDs. Time-dependent density functional calculation suggests the presence of polypeptides on the surface of CDs, contributing to the optical activity originating from the stacking of neighboring carbonyl groups.
CHINESE CHEMICAL LETTERS
(2021)
Article
Biochemistry & Molecular Biology
Jiyao Xu et al.
Summary: This study developed a highly sensitive and selective fluorescent probe for sequential detection of iron ion and ascorbic acid, demonstrating great potential for practical applications and reliable detection results.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Review
Engineering, Environmental
Caicheng Long et al.
Summary: Carbon dots (CDs) have gained increasing attention in environmental applications due to their unique optical properties, low toxicity, and other advantageous characteristics. They have shown promising potential in environmental pollution control and remediation, including sensing, adsorption, degradation of pollutants, and antimicrobial applications. The review provides insight into the recent developments, challenges, and future research directions in utilizing CDs for environmental purposes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Analytical
Ouwen Xu et al.
Summary: A dual-on-off-on fluorescent probe based on nitrogen-doped carbon quantum dots (BG-NCDs) was developed for detecting Fe(III), AA, Cu(II), and GSH. The method displayed high sensitivity, wide detection range, good practicality, low cytotoxicity, and successful multicolor imaging of DU145 cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Spectroscopy
Zahra Golsanamlou et al.
Summary: A novel amine-functionalized silica quantum dots fluorescent nanoprobe was developed for sensing lead concentration and tracing; the probe showed high sensitivity and specificity; it exhibited excellent cell membrane permeability and biocompatibility for intracellular applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Spectroscopy
Wenyi Zhang et al.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2020)
Article
Chemistry, Applied
Yan Liang et al.
Review
Chemistry, Multidisciplinary
Shihai Miao et al.
Article
Chemistry, Analytical
Mojtaba Amiri et al.
Article
Chemistry, Analytical
Pengli Gao et al.
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Physical
Guangkuo Hu et al.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Chemistry, Analytical
Xu Zhou et al.
Article
Chemistry, Analytical
Zhenyu Lu et al.
ANALYTICA CHIMICA ACTA
(2019)
Article
Chemistry, Analytical
Yuan Yan et al.
ANALYTICA CHIMICA ACTA
(2019)
Article
Chemistry, Multidisciplinary
Yingying Wei et al.
Article
Chemistry, Multidisciplinary
Xinyue Rao et al.
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Biophysics
Qian Qian Zhang et al.
BIOSENSORS & BIOELECTRONICS
(2018)
Article
Chemistry, Multidisciplinary
Lulu Hu et al.
Article
Chemistry, Multidisciplinary
Rong Sheng Li et al.
Article
Chemistry, Physical
Qingqing Fang et al.
Article
Chemistry, Analytical
Linbo Li et al.
Article
Chemistry, Physical
Dong Sun et al.
