Article
Chemistry, Multidisciplinary
Eduardo Gonzalez-Martinez, Sokunthearath (Kevin) Saem, Nadine E. Beganovic, Jose M. Moran-Mirabal
Summary: A key challenge in sensor miniaturization is to create smaller electrodes without sacrificing sensitivity. In this study, gold electrodes were enhanced 30-fold by wrinkling and chronoamperometric pulsing, resulting in increased surface roughness. The nanoroughened electrodes were resistant to fouling and showed excellent performance in detecting Cu2+ and glucose. The authors anticipate that this methodology can accelerate the development of simple, cost-effective, and highly sensitive electrochemical platforms.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Analytical
Jianmei Wang, Hong Zhou, Jing Liu, Wenrong Yang
Summary: By controlling surface nanoarchitectures of DNA modified electrode, a new biosensing interface for the detection of p53 gene was designed, showing high performance with potential applications in clinical diagnosis and biomedical research.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Mohamed Bahri, Mohamed Amin Elaguech, Salem Nasraoui, Khouloud Djebbi, Olfa Kanoun, Peiwu Qin, Chaker Tlili, Deqiang Wang
Summary: Various carbon-based biosensors, including mechanical exfoliation, epitaxial growth, reduced graphene oxide, and chemical vapor deposition, have been investigated for sensitive and specific detection of DNA. The laser-induced graphene technique has been widely adopted as a promising approach for designing electrochemical biosensors. In this study, a poly C(15)-tailed diblock DNA probe is used to anchor to a carbonized working electrode, and a second block modified with ferrocene derivatives is used for DNA sequence recognition.
MICROCHEMICAL JOURNAL
(2023)
Article
Biochemical Research Methods
Veronika Svitkova, Katarina Nemcekova, Vlastimil Vyskocil
Summary: In this study, a mercury meniscus-modified silver solid amalgam electrode was used for the detection of UV-induced DNA damage. The integrity of the double-stranded DNA layer was indirectly detected using methylene blue reduction, and different wavelengths of UV irradiation resulted in different electrochemical signals.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Physical
Sundaram Chandrasekaran, Mahima Khandelwal, Fan Dayong, Lijun Sui, Jin Suk Chung, R. D. K. Misra, Peng Yin, Eui Jung Kim, Woong Kim, Aravindan Vanchiappan, Yongping Liu, Seung Hyun Hur, Han Zhang, Chris Bowen
Summary: This review provides an overview of recent progress in nano- and microstructured catalysts as binder-free electrodes for electrocatalytic water splitting and oxygen evolution reaction. The impact of nanostructure on their functional property relationships and enhanced bifunctional electrocatalytic performance is discussed.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Analytical
Mayane S. Carvalho, Raquel G. Rocha, Lucas V. de Faria, Eduardo M. Richter, Luiza M. F. Dantas, Iranaldo S. da Silva, Rodrigo A. A. Munoz
Summary: This study proposed an electrochemical device fabricated by 3D printing technology for the monitoring of hydroxychloroquine (HCQ), a widely prescribed medication during the coronavirus pandemic. The device demonstrated high sensitivity and accuracy in detecting HCQ, and was successfully applied to the analysis of water and pharmaceutical samples. The combination of the device with portable instrumentation shows promise for on-site HCQ detection.
Article
Chemistry, Multidisciplinary
Haibing Hu, Baozhu Xie, Yangtian Lu, Jianxiong Zhu
Summary: Arsenic is a common environmental pollutant and a serious threat to human health. This paper reviews the recent development of electrode systems based on various nanomaterials for the detection of arsenic. The modified electrodes, especially those with noble metal and metal compound nanomaterials, show great potential for rapid and sensitive arsenic detection.
Article
Chemistry, Analytical
Jianmei Wang, Hong Zhou, Jing Liu, Jin He, Jingquan Liu, Wenrong Yang
Summary: A unique label-free electrochemical DNA biosensor based on gold nanoparticles (GNPs) mediated electron transfer has been developed for sensitive and accurate detection of target DNA. Experimental results showed that the different states of DNA monolayers and the sizes of GNPs significantly affect the electron transfer, with a detection limit of 1.47 pM.
MICROCHEMICAL JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Jing Zhang, Meifeng Hou, Guanyu Chen, Huifang Mao, Wenqian Chen, Wenshen Wang, Jinghua Chen
Summary: An electrochemical biosensor based on DNA nano-bridge was developed for detecting exosomal miR-21 with high sensitivity and selectivity, showing potential application in early diagnosis of cancer.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Analytical
Mukerrem Findik, Haluk Bingol, Arzum Erdem
Summary: Two types of hybrid nanoflowers modified disposable electrodes were developed to investigate the electrochemical behavior of anticancer drug-DNA interaction. Through structural and morphological characterizations, it was shown that the sensors had good detection performance in measuring ctdsDNA and DNR concentrations as well as DNA-DNR interaction.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Changeun Yoo, Seokmin Lee, Yongkwon Song, Woojae Chang, Moon Kyu Park, Younji Ko, Jinhan Cho
Summary: In this study, hierarchically micro/nano-wrinkle-structured elastomeric electrodes with high energy storage performance and good mechanical/electrochemical stabilities were developed. A swelling/deswelling-involved metal nanoparticle assembly was performed on thiol-functionalized PDMS elastomers, followed by conformal electrodeposition of Ni and NiCo layered double hydroxides layers. The resulting elastomeric electrodes exhibited higher areal capacity and superior rate capability compared to conventional elastomeric electrodes while maintaining their electrical/electrochemical properties under external mechanical deformation.
Review
Chemistry, Physical
Yaniv Shlosberg, Lior Sepunaru
Summary: Rapid, reliable, and cost-effective pathogen detection sensors are transforming modern biomedical devices for healthcare applications. Electrochemistry is an intriguing method that uses electricity to drive chemical reactions and can detect species based on their spatial 3D fingerprint with high specificity.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Electrochemistry
Afia Asif, Arto Heiskanen, Jenny Emneus, Stephan Sylvest Keller
Summary: Carbon microelectrodes are widely used in various applications due to their material properties. Optimized fabrication of carbon nanograss electrodes provides high surface area suitable for electrochemical applications such as biosensing or electrochemical monitoring of cells, showing an approximately 2-fold increase in electrochemical signals compared to 2D electrodes.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Siyeon Jang, Hyeongho Min, Sung Beom Cho, Hyeon Woo Kim, Wonkyeong Son, Changsoon Choi, Sungwoo Chun, Changhyun Pang
Summary: A tailored wrinkling structure is formed on strut surfaces inside a 3D polydimethylsiloxane (PDMS) polymeric foam, significantly increasing specific surface area and stretchability through oxygen plasma treatment and prestretching. Supercapacitors prepared with the improved material show a substantial increase in storage capacity and maintain capacity well under stretching up to 50%.
Review
Chemistry, Multidisciplinary
Qinglin Zhu, Yuemeng Yang, Hongxiao Gao, Li-Ping Xu, Shutao Wang
Summary: Superwettable materials have shown great potential in electrochemical biosensors, offering advantages such as large electrochemical active areas and optimized mass transfer. Progress has been made in different types of superwettable electrodes, and superwettable materials can also be used in wearable electrochemical sensors.