Article
Chemistry, Inorganic & Nuclear
Xinyue Zhu, Xinru Wu, Jiaojiao Liu, Lina Zou, Baoxian Ye, Gaiping Li
Summary: A dual-emission lanthanide coordination polymer was synthesized, which enabled the development of a simple, highly selective, and sensitive ratiometric glucose assay.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Biophysics
Hui-Hui Zeng, Kun Yu, Jian Huang, Fang Liu, Zhi-Yi Zhang, Shi-Ping Chen, Fei Zhang, Shu-Ping Guan, Li Qiu
Summary: Efficiency of energy transfer from guanine nucleotide to terbium ion is influenced by the phosphate group, with guanosine diphosphate (GDP) showing better sensitize ability to Tb3+ ions luminescence compared to 5'-GMP. A stable optical Coumarin@GDP-Tb polymer was synthesized and designed as a fluorescence probe for sulfur ions detection, with its fluorescence quenched by Fe2+ ions and recovered by S2- ions. The detection limit for S2- ions was calculated to be 0.073 μM, demonstrating practicality in real water samples.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Yang Xu, Hongmei Yu, Lalit Chudal, Nil Kanatha Pandey, Eric Horacio Amador, Brian Bui, Lingyun Wang, Xuedan Ma, Shuping Deng, Xiuhui Zhu, Shaoyan Wang, Wei Chen
Summary: In this study, carbon dots passivated with polyethylene glycol were explored as a highly sensitive H2S detection probe, exhibiting different luminescent properties when excited at different wavelengths. The interaction of Na2S with CDs led to a linear increase in blue emission at 455 nm. The method showed excellent linear relationships and low detection limits, making it a promising approach for sensitive H2S detection and bioimaging applications.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Applied
Pei Jia, Jiayu Yang, Jinjie Hou, Kairong Yang, Taotao Zhe, Tong Bu, Li Wang
Summary: A new ratiometric platform for sensing Hg2+ was developed which combined fluorescence and scattering signals. The ratiometric strategy exhibited superior performance in detecting Hg2+ by utilizing two independent signals.
Article
Chemistry, Analytical
Xia Wu, Xufeng Meng, Baoxiu Hou, Zhong Sun, Yunyi Zhang, Ming Li
Summary: A smartphone-assisted fluorescence color sensing system for rapid, convenient, and on-site detection of copper ions was developed. The system provides high sensitivity and accuracy, and can be applied in real samples.
Article
Chemistry, Inorganic & Nuclear
Meng-Yao Zhang, Feng-Ying Yi, Qing-Zhong Guo, Fa-Liang Luo, Lan-Jun Liu, Jun-Fang Guo
Summary: A ratiometric luminescence sensing platform based on lanthanide-based silica nanoparticles was constructed for the detection of Fe3+ and Cu2+ ions in water. The SiO2@Tb nanoparticles with dual-emission signals were successfully prepared and showed high sensitivity with low detection limits. The mechanism for the luminescence quenching of SiO2@Tb was systematically investigated and it was found that the quenching was attributed to the synergetic effect of the absorption competition quenching mechanism and cation exchange. This study demonstrates the potential of SiO2@Tb as a fluorescent probe for the detection of Fe3+ and Cu2+ ions.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Analytical
Fatemeh Rahimi, Mansoor Anbia
Summary: A novel ratiometric fluorescent nanoprobe was developed for the sensitive determination of cyanide anion. The probe utilized the electrostatic attraction between silicon nanoparticles and silver sulfide quantum dots to achieve ratiometric fluorescence detection. The method showed good linearity and low detection limit under optimized conditions, and was successfully applied to determine cyanide anion in water and potato samples.
Article
Chemistry, Multidisciplinary
Jiaqing Guo, Aikun Liu, Yutian Zeng, Haojie Cai, Shuai Ye, Hao Li, Wei Yan, Feifan Zhou, Jun Song, Junle Qu
Summary: The study developed novel dual-emission nitrogen-doped carbon dots (NCDs) for sensitive detection of Cu2+ and ClO-, exhibiting excellent anti-interference ability and selectivity with a linear relationship between fluorescence intensity in different emissions for the two ions. The detection limits for Cu2+ and ClO- were very low, with good recovery rates in water samples, indicating a promising application prospect in real samples.
Article
Engineering, Environmental
Jia Ge, Yanmei Shen, Weixia Wang, Yuqing Li, Yu Yang
Summary: A facile fluorescent bioassay for Cu2+ and S2- based on nitrogen-doped carbon dots was developed in this study. The method showed excellent specificity and stability, with high sensitivity for detecting both ions in lake water. This approach holds great promise for applications in analytical chemistry and environmental remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Jinmin Wang, Xianglong Qu, Limin Zhao, Bing Yan
Summary: COF nanosheets, a new member in 2D nanomaterials, show potential in drug detection with high sensitivity and selectivity. Interaction with drugs promotes the preparation of COF nanosheets and their application in drug detection.
ANALYTICAL CHEMISTRY
(2021)
Article
Spectroscopy
Masoud Gazizadeh, Gholamreza Dehghan, Jafar Soleymani
Summary: A sulfide-doped carbon dots/cadmium sulfide quantum dots ratiometric fluorescent nanosensor was developed for sensitive and selective determination of glibenclamide in biological fluids. The method utilizes the quenching effect of glibenclamide on the dual-emission intensity of the system. The developed nanosensor showed good accuracy in detecting glibenclamide in spiked human serum samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Polymer Science
Xin Zhang, Pengfei Jiao, Yihan Ma, Yuping Wei
Summary: A new fluorescence sensor based on molecular imprinted polymers was designed by combining them with water-soluble manganese-doped zinc sulfide quantum dots (Mn2+: ZnS QDs). The sensor, known as MIP@QDs, showed rapid and selective fluorescence sensing of sulfanilamide in water samples. The experimental results demonstrated that the MIP@QDs has high selectivity and sensitivity towards sulfanilamide detection, with a quick response time of 5 minutes and an imprinting factor of 14.8.
Article
Chemistry, Physical
Xiaolin Tian, Zhefeng Fan
Summary: A ratiometric fluorescence sensor based on the self-assembly of Eu3+ and CDs was developed for the direct detection of AA. The sensor showed excellent sensitivity and selectivity, and demonstrated great potential for the determination of AA in food samples.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Jose Varghese Rajendran, Sundararajan Parani, Vasudevan Pillay R. Remya, Thabang C. Lebepe, Rodney Maluleke, Sabu Thomas, Oluwatobi Samuel Oluwafemi
Summary: This study presents a facile fluorometric method for detecting Cu2+ ions using GSH capped CIS/ZnS QDs, which exhibit significant photoluminescence quenching in the presence of Cu2+ ions. The QDs show a linear response to Cu2+ ions over a wide concentration range.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2022)
Article
Biophysics
Yin Dai, Wei Xu, Junqiang Hong, Yani Zheng, Huizhu Fan, Jun Zhang, Jianwen Fei, Wanying Zhu, Junli Hong
Summary: In order to monitor the residual of neonicotinoids, a novel smartphone-enabled molecularly imprinted ratiometric fluorescence sensing system was developed for on-site detection of thiamethoxam (TMX). The system utilized blue-emission carbon dots (B-CDs) wrapped with a molecularly imprinted layer (MIPs) as response signal, and red-emission carbon dots (R-CDs) as internal reference. The fluorescence signal ratio increased with TMX concentration, resulting in a color change from red to blue. The system showed a satisfactory limit of detection (LOD) of 13.5 nM (fluorescence analysis) and 70.1 nM (visual determination), and demonstrated excellent reliability for TMX detection in actual samples with recovery rates ranging from 91.40% to 105.7%. Therefore, this sensing system offers promising prospects for visual detection of pesticide residues in complex environmental samples.
BIOSENSORS & BIOELECTRONICS
(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)