Article
Materials Science, Multidisciplinary
Liyun Ding, Shiyuan Wang, Qin Li, Yumei Zhang, Jue Zhao, Xingdong Jiang, Fei Ma
Summary: A novel dual-mode cholesterol biosensor based on gold nanorods-carbon quantum dots-cholesterol oxidase complex was developed. The sensor utilizes the reaction between cholesterol and cholesterol oxidase to produce hydrogen peroxide, resulting in fluorescence quenching. The experimental results showed that there is a good linear correlation between the fluorescence response and absorption peak shift in cholesterol solutions within the concentration range of 0.1-1 mM.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Analytical
Qingmei Zhong, Xiu Qin, Chunling Yuan, Rui Shi, Yilin Wang
Summary: A colorimetric method for sensitive detection of sarcosine was developed based on etching of Au nanorods mediated by enzyme-like reactions. The method involved the use of carbon quantum dots and sarcosine oxidase to catalyze the etching of AuNRs, resulting in a blue-shift of the LSPR peak for the determination of sarcosine concentration. The method showed promising results in detecting sarcosine in human urine samples, demonstrating its potential application in practical settings.
MICROCHEMICAL JOURNAL
(2021)
Article
Spectroscopy
Xiaoping Chen, Jianwei Lin, Yafeng Zhuang, Siqi Huang, Jinghua Chen, Zhizhong Han
Summary: A new ratiometric fluorescence sensor is developed for the selective detection of chlorotetracycline (CTC) using dual-mode fluorescence method, demonstrating good selectivity and sensitivity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Biophysics
Ojodomo J. Achadu, Fuyuki Abe, Farzana Hossain, Fahmida Nasrin, Masahito Yamazaki, Tetsuro Suzuki, Enoch Y. Park
Summary: Synergistic dual-mode optical platforms with novel dual-modality fluorescence and surface-enhanced Raman scattering techniques have been integrated into a biosensor for the rapid and ultrasensitive detection of norovirus. The biosensor shows a wide detection range and excellent detection limit, as well as the ability to track clinical norovirus in fecal specimen effectively.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Yulu He, Jin Chen, Renming Liu, Yulong Weng, Cong Zhang, Yanmin Kuang, Xiaojuan Wang, Lijun Guo, Xia Ran
Summary: This study reports the suppressed blinking, enhanced radiative rate, and polarization-dependent emission properties of single ZnCdSe/ZnS QDs assembled on the surface of Au nanorods. The local surface plasmon (LSP) of Au nanorods significantly regulates the excitation and emission properties of the composite QD-Au NRs.
ACS APPLIED MATERIALS & INTERFACES
(2022)
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
Koushik Mondal, Ashim Pramanik, Tapashree Mondal, Sujit Sankar Panja, Rajat Sarkar, Pathik Kumbhakar
Summary: This study reports the aggregation-induced enhancement (AIE) of photo-luminescence quantum yield (PLQY) in the N,N-dimethylformamide (DMF)-stabilized Au nanocluster (AuNC) system, from 12.5% to 51%. The self-assembling of AuNCs and Förster resonance energy transfer (FRET) technique were utilized to design a white LED (WLED) with CIE coordinates of (0.35, 0.29). The performance of the WLED was further improved by optimizing the components and incorporating nitrogen-doped graphene quantum dots (NGQD).
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Nonthanan Sitpathom, Sujin Suwanna, Wanchai Pijitrojana, Yingyot Infahsaeng, Ekkarat Pongophas, Ruchipas Bavontaweepanya, Tanapat Deesuwan
Summary: Material modification on plasmonic nanostructures can enhance the optical near-field enhancement and resonance wavelength tuning. This study focuses on closed-hexagonal sub-micro disk arrays of the AgxAu1-x alloy and pure Ag arrays, and shows that the electric-field enhancement is increased in the near-infrared and visible spectra, respectively. Additionally, the combination of Ag/Au heteromaterial array of sub-micro disks strengthens the local confinement in the near-infrared region and boosts the electric field enhancement.
OPTICAL MATERIALS EXPRESS
(2022)
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, Physical
Oluwasesan Adegoke, Niamh Nic Daeid
Summary: A novel fluorescence aptasensor was developed for ultrasensitive detection of arsenic (As) contamination, with the probe successfully applied in environmental and biological samples. By optimizing the probe composition, selective and quantitative analysis of As(III) was achieved with high sensitivity.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Biochemical Research Methods
Hanqiang Zhang, Yufei Li, Haixin Lu, Feng Gan
Summary: A new dual-mode ratiometric fluorescence and colorimetric probe has been developed for selective determination of Cu2+. The probe shows high accuracy and sensitivity, and has immense potential for practical applications.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Nur Jalal Mondal, Rahul Sonkar, Samir Thakur, Nirab Ch. Adhikary, Devasish Chowdhury
Summary: This study investigates the catalytic activities of AuNR-MoS2 QDs composite and AuNS-MoS2 QDs composite, as well as AuNR and AuNS. The results show that the AuNR-MoS2 QDs composite exhibits the highest catalytic efficiency, with a rate constant of 0.06 min-1, compared to the AuNS-MoS2 QDs composite, AuNR, and AuNS, with rate constants of 0.023, 0.021, and 0.008 min-1 respectively.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Analytical
Pengde Jia, Caiping Ding, Zhiwei Sun, Liping Song, Dong Zhang, Zejun Yan, Zhenlin Zhang, Fengmei Su, Amany A. Mostafa, Youju Huang
Summary: By precisely regulating the distance between Au nanorods and Ag2S quantum dots with DNA of different chain lengths, the best MEF effect was obtained. Utilizing this, a biosensor for accurate detection of PCA3 was designed with good performance in terms of detection limit and sensitivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Spectroscopy
Chunling Yuan, Xiu Qin, Yuanjin Xu, Rui Shi, Shiqi Cheng, Yilin Wang
Summary: Fluorescent carbon quantum dots with excitation-dependent emission characteristics were successfully prepared, exhibiting peroxidase-like activity and potential applications in detecting H2O2 and uric acid.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Xiangjuan Zheng, Zhiying Shi, Chaojun Fu, Yuanlin Ji, Baozhu Chi, Fanrong Ai, Xiluan Yan
Summary: Titanium carbide quantum dots (Ti3C2 QDs) were synthesized using ammonia-assisted hydrothermal method, and potassium permanganate (KMnO4)-functionalized Ti3C2 QDs (Mn-QDs) were obtained by modifying Ti3C2 nanosheets with KMnO4. The luminescent Mn-QDs showed good dispersion stability and were able to specifically detect Cr3+ and Hg2+ ions. The interaction between negatively charged Mn-QDs and Cr3+/Hg2+ was due to electrostatic interactions and surface functional groups. The detection limits for Cr3+ and Hg2+ were 0.80 μM and 0.16 μM, respectively.
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)