Article
Electrochemistry
Hao Huang, Maria Stromme, Adolf Gogoll, Martin Sjodin
Summary: This study explored conducting redox polymers (CRPs) as electrode materials for organic batteries, which are composed of a polypyrrole conducting polymer backbone with attached quinone pendant groups. A modular organic synthetic approach allowed for the assembly of pyrrole and quinone units into quinone-pyrrole dyads with tunable quinone formal potentials. By choosing CRPs with different quinone potentials as anode and cathode material, an all-organic water-based battery was constructed, showing good correlation between cell potentials and redox potential differences.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Zhen Song, Rong Li, Xiqin Yang, Zhanhua Zhang, Xiliang Luo
Summary: This study developed an electrochemical biosensing platform with enhanced antifouling abilities by immobilizing DNA-peptide conjugates onto an electrode. The biosensor exhibited enhanced antifouling properties and was capable of detecting low fouling proteins directly in complex biological samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Diana M. Bobrowska, Katarzyna Gdula, Joanna Breczko, Anna Basa, Karolina H. Markiewicz, Krzysztof Winkler
Summary: Composites of poly(p-phenylene vinylene) (PPV) and different carbon nanostructures were produced, creating nanostructural porous materials with increased surface area and improved thermal stability compared to unmodified PPV. The electrochemical properties of these composites are significantly affected by the electronic interaction between the composite components.
JOURNAL OF NANOPARTICLE RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Junyan Ma, Yaoyu Xu, Weijie Si, Zhenxing Zhang
Summary: Recent studies have shown that cancer cells and their membranes exhibit an exceptionally high concentration of reactive oxygen species (ROS), leading to the development of a method using biopolymers modified from polyphenylvinylene (PPV) as biosensors targeting ROS.
Article
Chemistry, Physical
Martijn Peters, Derese Desta, Senne Seneca, Gunter Reekmans, Peter Adriaensens, Jean-Paul Noben, Niels Hellings, Tanja Junkers, Anitha Ethirajan
Summary: Conjugated polymer nanoparticles (CNPs) are highly valued in bioimaging for their optical properties and biocompatibility, but face issues with unspecific protein adsorption. Research shows that PEGylation can modulate the uptake of CNPs by brain cells without affecting their optical properties, highlighting their potential as excellent bioimaging tools.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Biophysics
Ssu-Chia Chen, Kuan-Ting Chen, Amily Fang-Ju Jou
Summary: The novel dual-amplification-boosted electrochemical biosensor was developed for detecting pancreatic cancer-associated miR-196b, showing a detection limit of 0.26 pM and nice analytical reproducibility. The biosensor offers great promise as a complementary tool for real sample detection in the clinic.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Polymer Science
Yurachat Janpatompong, Kamil Suwada, Michael L. Turner, Guillaume De Bo
Summary: Understanding the stability of conjugated polymers towards mechanical stimuli is crucial for optimizing their use in electronic and optoelectronic devices. Mechanochemistry is a field that aims to control mechanical forces for chemical changes, and it can also be used to study the stability of conjugated polymers. Ultrasonication is a technique that can be used to test the mechanical integrity of phenylenevinylene block copolymers and demonstrate their stability to mechanical forces, making them suitable for flexible organic electronics.
Article
Nanoscience & Nanotechnology
Yasser Ashraf Gandomi, Irina Krasnikova, Nikita O. Akhmetov, Nikolay A. Ovsyannikov, Mariam A. Pogosova, Nicholas J. Matteucci, Christopher T. Mallia, Bertrand J. Neyhouse, Alexis M. Fenton, Fikile R. Brushett, Keith J. Stevenson
Summary: A study on composite polymer-inorganic binder-filler membranes for redox flow batteries was conducted, focusing on the performance of different ceramic compounds blended with a polymeric matrix. The results showed that mechanically robust and chemically stable composite membranes can support high current density, but further improvements are needed in terms of selectivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Giacomo Fiorin, Mark J. Dello Stritto, Simona Percec, Michael L. Klein
Summary: This study investigates the response of PPTA crystals to shear strain, revealing that the crystal response varies depending on the shear mode applied. The findings highlight the importance of understanding the crystal behavior under different mechanical conditions for the development of Kevlar and new polyamide materials.
Article
Chemistry, Multidisciplinary
Ming-Yue Zhang, Yu Song, Duo Yang, Zengming Qin, Di Guo, Li-Jun Bian, Xiao-Guang Sang, Xiaoqi Sun, Xiao-Xia Liu
Summary: This study introduces a redox-active poly-counterion doping concept to enhance the electrochemical performance of conducting polymers (CPs), especially under ultra-high mass loadings. By doping with poly-counterions, the dopants undergo redox reactions during charge/discharge processes to provide additional capacitance and improve the electrical conductivity of CPs. Additionally, poly-counterions with steric hindrance can act as structural pillars and facilitate ion transport in CPs.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Electrochemistry
Maria J. Saenz-Espinar, Andres F. Quintero-Jaime, Alonso Gamero-Quijano, Francisco Montilla, Francisco Huerta
Summary: This study investigates the direct electron transfer between cytochrome c and conducting polymers with the structure of thiophene. The combination of electrochemistry and in situ FTIR spectroscopy provides insight into the mechanism of DET at physiological pH. The results show that hydrophilic interactions facilitate the correct orientation of cytochrome c, and injecting a positive charge into the conducting polymer induces protein flipping.
Article
Chemistry, Analytical
Xiaoyan Gan, Feng Qiu, Bingying Jiang, Ruo Yuan, Yun Xiang
Summary: An electrochemical assay for ACP in human serum samples using DNA extension and magnetic bead technologies on rGO-modified electrode was developed, providing high sensitivity and selectivity with a wide detection range and low detection limit.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Yoldas Seki, Elif Kizilkan, Berkay Metin Leskeri, Mehmet Sarikanat, Lutfiye Altay, Akin Isbilir
Summary: The study investigates whether a blend of PPS and SPS (PPS-SPS) can be used as a substitute for PPS in applications requiring high thermal stability, high mechanical performance, and high thermal conductivity. Carbon-based fillers, such as carbon fiber and synthetic graphite, were used to improve the mechanical properties and thermal conductivity of the blend. The results show that carbon-loaded composites based on PPS-SPS blend have the potential to be used in thermal management applications with the advantages of low cost and lightweight compared to PPS-based composites.
Article
Polymer Science
Eui Jin Ko, Eunju Lee, Jang Yong Lee, Duk Man Yu, Sang Jun Yoon, Keun-Hwan Oh, Young Taik Hong, Soonyong So
Summary: Research has found that introducing naphthalene into poly(arylene ether ketone) multi-block copolymers enhances the pi-pi interactions of the naphthalene units, resulting in high ion exchange capacity and polymerization yield. The naphthalene-containing copolymer membrane exhibits good hydrogen gas barrier property, chemical stability, and mechanical toughness, with a proton selectivity to hydrogen gas 3.6 times higher than Nafion 212. PEMWE single cells using this membrane perform better than Nafion 212, indicating that naphthalene-containing copolymer membranes are a promising replacement for PFSA membranes in PEMWE.
Article
Biochemistry & Molecular Biology
D. V. Estrada-Osorio, Ricardo A. Escalona-Villalpando, L. G. Arriaga, A. Gutierrez, J. Ledesma-Garcia
Summary: Ferrocene-based polymers have been widely studied as redox mediators in glucose biosensors. This work successfully modified poly-L-lysine (PLL) with ferrocene carboxylate and tested its performance as a redox mediator with glucose oxidase. The results showed remarkable activity and high selectivity. Scanning electrochemical microscopy was used to analyze the charged regions of the modified polymer on the electrode surface.
BIOELECTROCHEMISTRY
(2022)
Article
Materials Science, Biomaterials
Rabih Khoder, Hafsa Korri-Youssoufi
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2020)
Article
Chemistry, Analytical
Zouhour Hsine, Salma Bizid, Rym Mlika, Helene Sauriat-Dorizon, Ayoub Haj Said, Hafsa Korri-Youssoufi
Article
Electrochemistry
Yaqiong Wang, Zouhour Hsine, Helene Sauriat-Dorizon, Rym Mlika, Hafsa Korri-Youssoufi
ELECTROCHIMICA ACTA
(2020)
Article
Polymer Science
Hassen Touzi, Ayoub Haj Said, Yves Chevalier, Hafedh Ben Ouada, Nicole Jaffrezic-Renault
Summary: The oxidation mechanism of amines in cyclen before and after copper complexation was examined in this study. Thin films of mono-N-MNCyclen and tetra-N-MNCyclen were deposited on gold electrodes, allowing for the identification of tertiary and secondary amines. The redox behavior of amines in the copper-mono-N-MNCyclen complex was studied, with a detection limit of 1 pM of Cu2+.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Meryem Bouaziz, Wei Zhang, Yongfeng Tong, Hamid Oughaddou, Hanna Enriquez, Rym Mlika, Hafsa Korri-Youssoufi, Zhesheng Chen, Heqi Xiong, Yingchun Cheng, Azzedine Bendounan
Summary: In this study, the structural and electronic properties of Au(111) surface after Te deposition in ultrahigh vacuum were investigated. The results showed different surface reconstructions and potential formation of an Au-Te alloy structure at different Te film thicknesses.
Review
Chemistry, Analytical
Maliana El Aamri, Ghita Yammouri, Hasna Mohammadi, Aziz Amine, Hafsa Korri-Youssoufi
Article
Chemistry, Analytical
Nada Elgiddawy, Shiwei Ren, Wadih Ghattas, Waleed M. A. El Rouby, Ahmed O. El-Gendy, Ahmed A. Farghali, Abderrahim Yassar, Hafsa Korri-Youssoufi
Summary: In this study, stable CTAB-P3HT NPs were prepared using a simple mini-emulsion method and characterized using various techniques. The NPs exhibited excellent fluorescence properties and electroactivity, making them suitable for bacterial detection and antimicrobial activity.
Article
Chemistry, Multidisciplinary
Maroua Hamami, Noureddine Raouafi, Hafsa Korri-Youssoufi
Summary: This study presents a biosensor platform based on DNA aptamers for detecting the agricultural pesticide acetamiprid, with stable capacitance performance and high selectivity. By combining DNA aptamers with MoS2 nanosheets, the detection of acetamiprid and ion diffusion are facilitated.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Ilhem Messaoudi, Imen Aribi, Zouhour Zaaboub, Sahbi Ayachi, Mohamed Othman, Ayoub Haj Said
Summary: An oligo phenylene vinylene was synthesized through anodic oxidation of DMAMC in nitromethane, showing thermal stability up to 190 degrees C and emitance peaks in the yellow-orange zone. The study proposed a mechanism for the electro-oligomerization of DMAMC based on experimental and theoretical calculations using DFT modeling.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
M. Chemek, S. Ben Amor, W. Taouali, E. Faulques, M. Bourass, D. Khlaifia, A. Haj Said, K. Alimi
Summary: The chemical modification of the synthesized oligo [4-(methoxyphenyl) acetonitrile] by Knoevenagel condensation with dimethylformamide dimethyl acetal resulted in significant changes to the photo-physical and electronic properties, including a redshift in absorption and photoluminescence spectra, a decrease in optical bandgap and energy gap, and drastic alterations in the HOMO and LUMO frontier orbitals.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Mourad Chemek, Samaher Chebil, Sarra Ben Amor, Dalila Khlaifia, Eric Faulques, Ayoub Haj Said, Kamel Alimi
Summary: The OMPA oligomer was chemically modified by Knoevenagel condensation with 9-anthraldehyde to form OMPA-ANTH, leading to significant changes in its optical and thermodynamic properties. The insertion of the anthracene group resulted in a decrease in the optical bandgap and energy gap, with the photo-generated species showing a longer lifetime upon chemical modification.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Analytical
Maroua Hamami, Meryem Bouaziz, Noureddine Raouafi, Azzedine Bendounan, Hafsa Korri-Youssoufi
Summary: The study introduces an electrochemical aptasensor for the detection of ampicillin, utilizing a nanostructure composed of MoS2 nanosheets and conductive polypyrrole nanoparticles. By studying the structural and morphological properties of the nanocomposite, it was found that the material formed a synergetic effect on the electrochemical redox process. The biosensor demonstrated high sensitivity and selectivity, with a limit of detection of 10 pg/L for ampicillin, making it a promising device for environmental antibiotic detection.
Article
Chemistry, Multidisciplinary
Hanen Raissi, Imen Cherif, Imen Aribi, Hajer Ayachi, Ayoub Haj Said, Sahbi Ayachi, Taoufik Boubaker
Summary: This study aims to understand and quantify the structure-property relationships of chlorine, methoxy and phenoxy para-substituted nitrobenzofurazans (NBDs). Optical and electrochemical properties were explored using UV-Vis spectroscopy and cyclic voltammetry (CV). The agreement between experimental and computational results indicates the reliability of the methods used.
Review
Chemistry, Analytical
Zouhour Hsine, Rym Mlika, Nicole Jaffrezic-Renault, Hafsa Korri-Youssoufi
Summary: Graphene and its derivatives have been widely used for electrochemical detection of dopamine due to their high surface area and good conductivity. Modified graphene and graphene-based nanocomposites show improved catalytic activity for dopamine detection. This review summarizes recent advances in graphene-based electrodes for electrochemical detection of dopamine and highlights the advantages of using polymers as linker platforms to form graphene-based nanocomposites for electrochemical dopamine sensors.
Article
Chemistry, Analytical
Rabiaa Helim, Ali Zazoua, Nicole Jaffrezic-Renault, Hafsa Korri-Youssoufi
Summary: We aimed to develop an electrochemical sensor for detecting the highly toxic water contaminant divalent metal ion (lead II). A sensor was formed using hemicellulose polysaccharide extracted from the Opuntia Ficus Indica cactus associated with agarose as a sensitive layer on a gold electrode. The sensor demonstrated high sensitivity towards Pb2+ with a detection limit of 1.3 fM, showing a potential application for lead detection in river and sea water.
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)
