Article
Chemistry, Multidisciplinary
Ayse Merve Senol, Ebru Bozkurt
Summary: A newly prepared rosehip-derived carbon dots (CDs) have been demonstrated as a Turn off-on fluorescent sensor to detect ferric ion (Fe3+) and adenosine triphosphate (ATP) molecules in aqueous solution. The CDs were prepared from rosehip using a one-step method and characterized for their optical and structural properties. The CDs showed sensitive quenching only with Fe3+ and could restore fluorescence intensity in the presence of ATP. The detection limit for Fe3+ and ATP was determined as 0.53 μM and 0.26 μM, respectively, making it a precise and selective fluorescent sensor for Fe3+-ATP.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Analytical
Zhihao Wu, Ruchun Chen, Shuang Pan, Hui Liu, Xiaoli Hu
Summary: A convenient method for ratiometric fluorescence detection of ATP based on CDs-OPD was developed, with high sensitivity (detection limit of 0.43 μmol L-1) achieved through the competitive reaction of ATP with Cu2+. Semi-quantitative measurement of ATP is possible through color changes, and the method showed satisfactory results for quantification of ATP in practical samples.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Analytical
Xinjia He, Xiao Zhao, Wenfang Deng, Yueming Tan, Qingji Xie
Summary: CdSe quantum dots-decorated ZnIn2S4 nanosheets exhibit high photoelectrochemical activity for sensitive ATP detection by integrating exciton energy transfer and exciton-plasmon coupling.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Lu Zhao, Jie Liu, Yunfeng Bai, Feng Feng, Xiaoming Yang
Summary: A new method using yellow-fluorescence carbon dots as sensors was established in this study to detect ATP and Kana, showing reliability and high sensitivity.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Applied
Nini Liang, Xuetao Hu, Wenting Li, Yueying Wang, Ziang Guo, Xiaowei Huang, Zhihua Li, Xinai Zhang, Jiukai Zhang, Jianbo Xiao, Xiaobo Zou, Jiyong Shi
Summary: A dual-signal fluorescent sensor was developed for the detection of tetracycline in milk, showing excellent reproducibility and stability. The sensor utilized two types of quantum dots, MoS2 QDs and CdTe QDs, to achieve two fluorescence emission peaks at 433 nm and 573 nm. The sensor demonstrated strong application potential with accurate detection of TET concentration in milk samples.
Article
Chemistry, Physical
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, water-soluble CdTe quantum dots with different sizes were synthesized using glutathione as the stabilizer. The fluorescence properties of these quantum dots below the freezing point were studied, showing strong temperature dependence and fluorescence reversibility. This work provides insight into expanding the application of quantum dots in biomedicine.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
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
Biochemistry & Molecular Biology
Xiaoxiao Chen, Yang Liu, Pu Li, Yichen Xing, Chaobiao Huang
Summary: A method for the trace detection of chloramphenicol (CAP) was established using a dual recognition system with a fluorescence quenching of quantum dots (QDs) and specific recognition of molecularly imprinted polymer (MIP). The MIP@SiO2@QDs showed good detection selectivity for CAP and was successfully applied to quantify CAP in lake water with promising potential for on-site detection in environmental waters.
Article
Materials Science, Multidisciplinary
Dagang Qi, Hewei Zhang, Zhiyong Zhou, Zhongqi Ren
Summary: In this study, CdTe semiconductor quantum dots (QDs) with different emission wavelengths were fabricated to detect copper ions. The nucleation and growth of crystals in the aqueous phase were separated by controlling the temperature, improving the optical properties of QDs. The QDs were coated using the sol-gel method for Cu(II) ion detection, and a good linear relationship between the concentration of Cu(II) ions and the quenching efficiency of fluorescent probes was observed. Ratiometric fluorescent probes were also fabricated, with a detection limit far lower than the standard for copper ion detection in water.
Article
Chemistry, Analytical
Hongliang Wang, Dan Song, Yue Zhou, Jiayuan Liu, Anna Zhu, Feng Long
Summary: The significant fluorescence enhancement of CdSe/ZnS quantum dots induced by Hg2+ was observed for the first time using a CdSe/ZnS QD-modified fiber nanoprobe. The fluorescence enhancement mechanism was attributed to Zn-to-Hg cation exchange in the ZnS shell, forming a HgxZn1-xS/CdSe heterojunction. The maximum fluorescence intensity increased over eight times and the characteristic time was linearly dependent on Hg2+ concentration.
Article
Chemistry, Multidisciplinary
Jialing Zhou, Ruoxi Zhao, Yaqian Du, Shikai Liu, Wenting Li, Shili Gai, Fei He, Lili Feng, Piaoping Yang
Summary: This study introduces a novel Si-CdTe quantum dots probe for sensitive detection of H2O2 and glucose. It has low toxicity, high specificity, and good stability, as well as an excellent lysosomal colocalization effect.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Spectroscopy
Yuting Wang, Fengming Zhang, Jia Liu, Bin Yang, Yue Yuan, Yanyan Zhou, Shuyun Bi
Summary: A method for detecting the content of nitrofurazone (NFZ) using fluorescence quenching of N-Acetyl-L-Cysteine (NAC) coated cadmium telluride quantum dots (CdTe QDs) was established. The synthesized CdTe QDs were characterized using transmission electron microscopy (TEM), fluorescence, and ultraviolet visible spectra (UV-vis). The interaction between NFZ and CdTe QDs was investigated by Stern-Volmer analysis and time-resolved fluorescence, and the binding forces were found to be hydrogen bonds or van der Waals forces. The method showed high correlation, with a detection limit of 0.04 μg mL-1 and good recovery rate and precision.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Yuguang Lv, Yuqing Cheng, Kuilin Lv, Guoliang Zhang, Jiang Wu
Summary: A CdTe quantum dot-based fluorescent probe was synthesized to determine felodipine (FEL) in this work. The synthesis conditions, structure, and interaction with FEL of CdTe quantum dots were analyzed. The optimal conditions for both the synthesis of CdTe quantum dots and the reaction with FEL were determined to successfully construct the fluorescent probe.
Article
Spectroscopy
Weikang Yang, Xinyu Zheng, Feng Gao, Huihui Li, Bo Fu, Dong-Yu Guo, Fuxiang Wang, Qinhe Pan
Summary: A CdTe QDs@ZIF-8 composite was prepared and applied for the detection of CTC residue in animal food products. The composite exhibited a short response time and a low detection limit, and showed excellent recyclability. Visual determination of CTC was achieved through the manufacture of portable test strips.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Zhiwen Gan, Tian Zhang, Yongmei Hu, Shujun Zhen, Xiaoli Hu
Summary: Developing ratiometric fluorescence probes for biothiols is of great significance. A simple ratiometric sensor for biothiols was developed based on CdTe quantum dots, which exhibited enhanced fluorescence and quenched second-order scattering in the presence of biothiols. The sensor showed fast response, simplicity, high sensitivity, and strong specificity, making it suitable for the quantification of biothiols in real samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)