Article
Materials Science, Multidisciplinary
Prem D. Nayak, David Ohayon, Shofarul Wustoni, Sahika Inal
Summary: This study investigates the ORR behavior of a series of electropolymerized PEDOT films and finds that the doping level of the polymer is influenced by the counterion type and the presence of a conductivity enhancer, which controls the ORR pathway in PEDOT films. High levels of intrinsic doping result in films with H2O2 as the major ORR product.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Biochemical Research Methods
Yanping Li, Chao Geng, Xiaoyun Xu, Xiaoyi Lv, Yishan Fang, Na Wang, Yunjun Yang, Bo Cui
Summary: A novel electrochemical sensor for nitrite determination was developed using a polythiophene-derivative film-modified glassy carbon electrode, showing high selectivity and sensitivity. The sensor demonstrated excellent detection performance and interference resistance, providing promising applications in the food industry and environmental analysis.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Mariya Tesakova, Sergey M. Kuzmin, Vladimir Parfenyuk
Summary: This study investigated the modification of carbon electrode surface with phthalocyanine and porphyrin metal complexes to obtain polyporphyrin films with higher catalytic activity. The composite of two Fe and Mn metal complexes showed synergistic effect in catalytic activity compared to individual porphyrin films.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Jeffrey Wuenschell, Ki-Joong Kim, Michael Buric
Summary: Optical fiber-based sensors are suitable for in-situ sensing applications in high temperature and harsh chemical conditions. This study combines single crystal sapphire fiber with a high-temperature stable perovskite oxide sensing layer to demonstrate all-optical oxygen sensing at extreme temperatures. The stability, humidity resistance, and low cross-sensitivity with CO2 make it viable for use in an operational SOFC or post-combustion environment.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Electrochemistry
Irem Aydin Kirlangic, Pinar Kara, Fatma Nil Ertas
Summary: A novel aptamer-based nanobiosensor was developed for label-free detection of Ochratoxin A, utilizing modified PGE surfaces and optimized operational and solution parameters. The sensor showed high selectivity and a detection limit of 0.03 nM, making it a promising tool for OTA detection.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Nanoscience & Nanotechnology
Samia Belhousse, Fatma-Zohra Tighilt, Sarah Bennia, Sarah Adjtoutah, Sabrina Sam, Kahina Lasmi, Khaled Hamdani
Summary: In this study, a hybrid gas sensor was developed by combining porous silicon (PSi) and polythiophene (PTh) with a simple fabrication process. The sensitivity and stability of the sensor were optimized by controlling the thickness of PTh on the surface of PSi. Functionalization of the PSi surface with PTh improved the performance and stability of the sensor.
REVIEWS ON ADVANCED MATERIALS SCIENCE
(2021)
Article
Chemistry, Analytical
Franziska V. Oberhaus, Dieter Frense
Summary: Polythiophene is a promising conductive polymer with excellent environmental stability and protein repellent properties. A new method has been developed for the fast, simple, and gentle removal of polythiophene films from gold electrodes, potentially supporting research in the field of conductive polymers.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Polymer Science
Doebner Von Tumacder, Zuzana Moravkova, Islam M. Minisy, Jirina Hromadkova, Patrycja Bober
Summary: The study focused on polypyrrole (PPy) prepared with organic dyes for its interesting morphology and electronic properties. It described the preparation of electropolymerized PPy/safranin-O film and found that incorporating safranin-O significantly enhanced the areal capacitance of PPy.
Article
Biochemistry & Molecular Biology
Danuta Tomczyk, Piotr Seliger, Wiktor Bukowski, Karol Bester
Summary: This study investigates the kinetics of electrode processes in polymer films by modifying electrodes with polymers. The transport of anions is found to determine the rate of charge transport. Poly[Ni(salcn(Bu))] modified electrodes prepared using TBAPF(6) and working in TBAClO(4) and TBABF(4) exhibit the most efficient kinetics.
Article
Chemistry, Physical
Yali Xu, Binbin Fan, Zheng Liu, Cong Huang, Aiping Hu, Qunli Tang, Shiying Zhang, Weina Deng, Xiaohua Chen
Summary: A redox-active engineered holey reduced graphene oxide film anode was prepared using carboxylic acid functionalized polystyrene spheres as a template, which greatly enhanced the electrochemical performance for potassium-ion batteries. The optimized film exhibited superior areal capacity and improved charge/discharge performance in KIBs.
Article
Engineering, Electrical & Electronic
Ling-Yun Gai, Xiao-Ran Gong, Chen Li, Su-Zhen Wang, Cheng-Te Lin, Re-Jing Zhao, Wan-Feng Xie
Summary: Electrochemical non-enzymatic biosensors based on metal oxide and metal composites have great potential. Hierarchical trimetal oxide hybrid nanocomposites, such as FCN-2/GCE, exhibit excellent performances for enzyme-free glucose detection.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Analytical
Ramin Karimian, Vahid Afshar
Summary: A modified electrode using Phen-Fe3O4 NPs-GO-Chi composite was fabricated and utilized for simultaneous determination of purine and pyrimidine bases in DNA. The sensor displayed excellent response towards guanine, adenine, thymine, and cytosine, with improved sensitivity and stability.
ANALYTICAL METHODS
(2022)
Article
Electrochemistry
Guangyan Liu, Tianzi Xia, Jiaxin Wei, Shili Hou, Shifeng Hou
Summary: In this study, unique ammonia modified MXene/aniline copolymers (PTA) were prepared for modifying an electrochemical sensor to detect GSH with high performance. The PTA copolymer exhibited a net-like structure and excellent electrochemical performance, making it an outstanding electrode nanomaterial for high-performance sensors. A PTA/GCE biosensor was fabricated and demonstrated high sensitivity, excellent selectivity, and stability for detecting glutathione. The biosensor was successfully applied to detect glutathione in plasma samples, showing promising prospects in biological and medical analysis.
Review
Chemistry, Multidisciplinary
Sijie Xie, Zhenyu Zhou, Xuan Zhang, Jan Fransaer
Summary: This work reviews the cathodic deposition of MOF films, which offers advantages such as simple operations, mild conditions, and controllable film thickness/morphology. The mechanism of the cathodic deposition is discussed, involving the deprotonation of organic linkers and the formation of inorganic building blocks. The main applications of cathodically deposited MOF films are introduced, highlighting its wide-ranging potential.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Biochemistry & Molecular Biology
Manni Ren, Zhe Cai, Li Chen, Hafida Wahia, Li Zhang, Yang Wang, Xiaojie Yu, Cunshan Zhou
Summary: The study showed that films based on zein/chitosan incorporated with curcumin and eugenol significantly improved mechanical properties and bioactivity, playing a vital role in extending the shelf life of blueberries.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
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)