Article
Chemistry, Analytical
Xiudan Hou, Jiying Song, Qi Wu, Haitao Lv
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, Analytical
Siwaluck Boonruang, Puttaraksa Naksen, Wipark Anutrasakda, Kantapat Chansaenpak, Vinich Promarak, Rattaporn Saenmuangchin, Chutima Phechkrajang, Purim Jarujamrus
Summary: This work introduced a facile synthesis method of nitrogen-doped amorphous carbon nanodots for the determination of low concentration of Pb2+ using a fluorometric paper-based sensor. The sensors exhibited high selectivity towards Pb2+ and showed promising results for practical analysis in pharmaceutical and environmental samples.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Applied
Yao Fan, Lu Shen, Yaqi Liu, Ying Hu, Wanjun Long, Haiyan Fu, Yuanbin She
Summary: A ratiometric fluorescent probe based on N/S-CQDs and TGA-CdTe QDs was developed to detect multiple tetracycline antibiotics. The probe exhibited enhanced sensitivity compared to single QDs and was able to detect four common TCs with a color change. The probe demonstrated accurate recognition of different TCs and mixed TC samples even in actual samples combined with chemometrics due to the abundant spectral fingerprints provided by the QDs.
Article
Chemistry, Analytical
Sijie Cheng, Xin Wang, Xuerong Yan, Yanteng Xiao, Yong Zhang
Summary: In this paper, novel N-doped carbon dots (N-CDs) were successfully prepared and their potential applications in malachite green detection and biological imaging were demonstrated.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Multidisciplinary
Yuanyuan Dong, Tianze Li, Buhe Bateer, Huiwen Wang, Qiuyue Fu, Fengfa Zhang
Summary: This work presents a simple solvothermal method to prepare yellow emissive nitrogen-doped carbon dots (YNCDs) using o-phenylenediamine (o-PD) and ethanol. The YNCDs show yellow emission at 410/555 nm and can be effectively inhibited by curcumin based on the inner filter effect (IFE). The YNCDs are used as nanoprobes to establish a turn-off sensor platform for detecting curcumin, achieving highly selective and sensitive detection in real samples.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
J. C. Fei, S. W. Sun
Summary: In this study, nitrogen-doping carbon dots (N-CDs) were prepared through hydrothermal synthesis using Ginkgo biloba L. leaves and ethylenediamine as carbon and nitrogen sources, respectively. The fluorescence of the N-CDs was quenched by a carbamate pesticide, which allowed for the development of a sensitive sensor for butocarboxim detection. The sensor showed good performance in real water samples.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Spectroscopy
Wenlu Wu, Zhongfei Hu, Cai Shi, Ruoqian Xu, Yiming Zhao, Yujie Ding
Summary: A Fe3+ optical sensor was developed by linking CdTe quantum dots and a Rhodamine B derivative using gamma-cyclodextrin as a bridge. The nanoprobe displayed a response to Fe3+ through a fluorescence resonance energy transfer process. The probe showed satisfactory linearity in the fluorescent quenching between 10 and 60 μM Fe3+ concentration, with a limit of detection of 2.51 μM. The probe was successfully used for the determination of Fe3+ in human serum with high sensitivity and exceptional selectivity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Food Science & Technology
Wenshuo Zhang, Hongda Zhong, Pingping Zhao, Aiguo Shen, Houbin Li, Xinghai Liu
Summary: Carbon quantum dots (CDs) show great potential in detecting food ingredients and contaminants due to their easy preparation, good biocompatibility, and adjustable modification. The design of probes for CDs can be categorized into three types, with the introduction of functional groups on the surface being a key factor. The intermolecular interactions of different target substances play a role in determining the choice of carbon source and synthesis method.
Article
Chemistry, Multidisciplinary
Min Wang, Chunhu Li, Meiling Zhou, Zhining Xia, Yike Huang
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
Chemistry, Analytical
Yudie Sun, La Fang, Yunxiang Han, Aobo Feng, Shengjun Liu, Kui Zhang, Jing-Juan Xu
Summary: Myocardial miRNAs in peripheral blood play a crucial role in the pathogenic process of myocardial infarction. Researchers have developed a ratiometric electrochemiluminescence biosensor for the rapid identification and accurate quantification of myocardial miRNAs, which has significant implications in clinical interventions for treating cardiovascular lesions.
ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Chunmei Lai, Simin Lin, Lei Xiong, Yuxin Wu, Chao Liu, Yanqiao Jin
Summary: A nitrogen-doped carbon quantum dots (N-CQDs)-based on-off fluorescent nanosensor was synthesized through hydrothermal treatment for the determination of Fe3+ and imaging towards cancerous cells. The N-CQDs exhibited excellent photo-luminescence and biocompatibility. The sensor showed selective and sensitive response to Fe3+ with a limit of detection of 0.177 mu M and an allowable detection range of 0-110 mu M. It also provided satisfactory results in detecting Fe3+ ions in tap water. The N-CQDs offer a practical and promising method for cellular imaging due to their excellent fluorescence potency and negligible cytotoxicity.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lisha Chen, Qianqian Tang, Shihao Wu, Longshuai Zhang, Lifang Feng, Yuan Wang, Yiling Xie, Yan Li, Jian-Ping Zou, Sheng-Lian Luo
Summary: A covalent bonded CdSeTe QDs and NH2-UiO-66 heterojunction (NUC-x) is constructed, which improves the photocatalytic performance of CO2 reduction. The optimized NUC-1200 achieved a significantly higher CO generation rate compared to NH2-UiO-66 and CdSeTe QDs. This work provides a new avenue for efficient and stable photocatalysis of QDs.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Applied
Bo Peng, Chunjuan Wang, Xueyan He, Yongjun Ma, Min Zhou, Xin Ma, Shengguo Zhao, Yanjun Fang
Summary: A triple-mode colorimetric and fluorescent sensing scheme based on manganese dioxide nanoparticles (MnO2NPs) and carbon quantum dots (CQDs) was developed for nitrite determination. The proposed methods, including UV-vis detection mode and fluorescent detection mode using a smartphone-based measurement, showed accurate and convenient detection of nitrite in food and water samples. The results were validated with the AOAC standard spectrophotometric method.
Article
Food Science & Technology
Zeyu Xu, Yizhong Wang, Jiaran Zhang, Ce Shi, Xinting Yang
Summary: The detection of trace amounts of Cu2+ in water using MPA-InP/ZnS QDs probes shows excellent sensitivity and selectivity, with a low limit of detection of 0.22 nM. The proposed fluorescence-quenching mechanism is applied successfully to real water samples and drink samples.
Article
Spectroscopy
Yan-Fei He, Jian-Wei Chen, Chang-Zhi An, Xiao-Lin Hou, Zi-Tao Zhong, Chao-Qing Li, Wei Chen, Bo Liu, Yuan-Di Zhao
Summary: In this study, CdSe/ZnS quantum dots with a particle size of 5.5-9.3 nm were successfully synthesized, showing fluorescence emission ranging from 545-616 nm. The water-soluble QD dispersion system remained liquid under freezing conditions at -20 degrees C with a fluorescence intensity increase and a quantum yield of 79% at -20 degrees C. Utilizing QDs, effective labeling of hepatic sinusoid endothelial cells was achieved with a labeling efficiency as high as 97%, indicating promising applications in microscopic liver section tomography.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
