MnO < sub > 2 < /sub > nanosheet quenched thulium doped photon-up conversion luminescent immunoprobe for the 'turn-on' detection of cardiac troponin T
Talanta. 2024 Apr 15;275:126096. doi: 10.1016/j.talanta.2024.126096. Online ahead of print.ABSTRACTA "turn-on" photon up conversion nano couple based on NaYF4: Yb, Tm UCNPs quenched with MnO2 nanosheet was developed for the rapid and selective detection of cTnT. Herein, MnO2 nanosheet hold on the surface of Antibody cTnT (Ab-cTnT) conjugated blue emitting up conversion nanoprobe (λem at 475 nm), which leads to quenching of fluorescence due to energy transfer from photon up conversion nanoparticles to MnO2 nanosheets. On introducing cTnT antigen to the system, the energy transfer process is hindered due to strong antigen -...
Source: Talanta - April 17, 2024 Category: Chemistry Authors: Merin K Abraham Anju S Madanan Susan Varghese Ali Ibrahim Shkhair Geneva Indongo Greeshma Rajeevan Vijila N S Sony George Source Type: research
Vanadium-doped metal-organic framework@Znln < sub > 2 < /sub > S < sub > 4 < /sub > core-shell heterojunction-attenuated photoelectrochemical immunoassay
We report an attenuated photoelectrochemical (PEC) immunoassay based on the organic-inorganic heterojunction 10MIL-88B(FeV)/ZnIn2S4 (10M88B(FeV)/ZIS) as a photoactive material for monitoring carcinoembryonic antigen (CEA). The 10M88B(FeV)/ZIS heterojunctions have excellent light-harvesting properties and high electrical conductivity, which are attributed to the advantages of both organic and inorganic semiconductors, namely, remarkable photogenerated carrier separation efficiency and long photogenerated carrier lifetime. Horseradish peroxidase (HRP) in the presence of H2O2 can catalyze 3,3'-diaminofenamide (DAB) producing ...
Source: Talanta - April 17, 2024 Category: Chemistry Authors: Xin Wang Dianyong Tang Xinyu Wan Haiyang Wang Dianping Tang Source Type: research
Label/immobilization-free Cas12a-based electrochemiluminescence biosensor for sensitive DNA detection
Talanta. 2024 Apr 15;275:126114. doi: 10.1016/j.talanta.2024.126114. Online ahead of print.ABSTRACTElectrochemiluminescence (ECL) is one of the most sensitive techniques in the field of diagnostics. However, they typically require luminescent labeling and electrode surface biological modification, which is a time-consuming and laborious process involving multiple steps and may also lead to low reaction efficiency. Fabricating label/modification-free biosensors has become one of the most attractive parts for simplifying the ECL assays. In this work, the ECL luminophores carbon dots (CDs) were encapsulated in DNA hydrogel in...
Source: Talanta - April 17, 2024 Category: Chemistry Authors: Honghong Wang Xiaomin Hang Huiyi Wang Jiaxin Peng Haoming Yu Li Wang Source Type: research
Recent advances and synergistic effect of bioactive zeolite imidazolate frameworks (ZIFs) for biosensing applications
Talanta. 2024 Apr 16;275:126097. doi: 10.1016/j.talanta.2024.126097. Online ahead of print.ABSTRACTThe rapid developments in the field of zeolitic imidazolate frameworks (ZIFs) in recent years have created unparalleled opportunities for the development of unique bioactive ZIFs for a range of biosensor applications. Integrating bioactive molecules such as DNA, aptamers, and antibodies into ZIFs to create bioactive ZIF composites has attracted great interest. Bioactive ZIF composites have been developed that combine the multiple functions of bioactive molecules with the superior chemical and physical properties of ZIFs. This...
Source: Talanta - April 17, 2024 Category: Chemistry Authors: Seyyed Mojtaba Mousavi Fatemeh Fallahi Nezhad Muhammad Hussnain Akmal Raed H Althomali Neha Sharma Vahid Rahmanian Rouhollah Azhdari Ahmad Gholami Mohammed M Rahman Wei-Hung Chiang Source Type: research
Research on a new multiple-screening method for laser-induced plasma spectroscopy utilizing Lorentz
Talanta. 2024 Apr 15;275:126087. doi: 10.1016/j.talanta.2024.126087. Online ahead of print.ABSTRACTIn the field of Laser Induced Breakdown Spectroscopy (LIBS) research, the screening and extraction of complex spectra play a crucial role in enhancing the accuracy of quantitative analysis. This paper introduces a novel approach for multiple screenings of LIBS spectra using Lorentz Screening and Sensitivity and Volatility Analysis. Initially, Create symmetrical sampling standards for Lorentz fitting. Then the Lorentz fitting is used to uniformly screen the collected spectral information on both sides in order to eliminate adj...
Source: Talanta - April 17, 2024 Category: Chemistry Authors: Jingjun Lin Panyang Dai Changjin Che Xiaomei Lin Jiangfei Yang Xingyue Yang Source Type: research
Synthesis of dual models multivalent activatable aptamers based on HCR and RCA for ultrasensitive detection of Salmonella typhimurium
Talanta. 2024 Apr 12;275:126101. doi: 10.1016/j.talanta.2024.126101. Online ahead of print.ABSTRACTAptamers have superior structural properties and have been widely used in bacterial detection methods. However, the problem of low affinity still exists in complex sample detection. In contrast, hybridization chain reaction (HCR)-based model I and rolling circle amplification (RCA)-based model II multivalent activatable aptamers (multi-Apts) can fulfill the need for low-cost, rapid, highly sensitive and high affinity detection of S. typhimurium. In our research, two models of multi-Apts were designed. First, a monovalent acti...
Source: Talanta - April 17, 2024 Category: Chemistry Authors: Shouyi Dou Mengyue Liu Haifang Wang Shuxian Zhou Giovanna Marrazza Yemin Guo Xia Sun Ibrahim A Darwish Source Type: research
Facile design of FeCu metal-organic frameworks anchored on layer Ti < sub > 3 < /sub > C < sub > 2 < /sub > T < sub > x < /sub > MXene for high-performance electrochemical sensing of resorcinol
Talanta. 2024 Apr 13;275:126100. doi: 10.1016/j.talanta.2024.126100. Online ahead of print.ABSTRACTThis work reports the rational design of a composite material by growing FeCu-MOF-919 on the surface of layered Ti3C2Tx MXene. The introduction of Ti3C2Tx MXene simultaneously weakens the aggregation of FeCu-MOF-919 and Ti3C2Tx MXene, which increases the electrochemical reaction active site of the composite material and improves the electrochemical activity. Interestingly, the FeCu-MOF-919/Ti3C2Tx based sensors were used to detect resorcinol (RS) with a wide linear range (0.5-152.5 μM), excellent sensitivity (0.23 μA μM-1 ...
Source: Talanta - April 16, 2024 Category: Chemistry Authors: Li Zhang Yu Han Ming Sun Fengbo Li Shaobin Li Tao Gui Source Type: research
Fabrication of molecularly imprinted carbon nanotubes integrating ionic liquids for efficient detection of perfluoroalkyl carboxylic acid in environmental water
Talanta. 2024 Apr 4;275:126017. doi: 10.1016/j.talanta.2024.126017. Online ahead of print.ABSTRACTIt is extremely significant while challenging to accurately detect low-levels of perfluoroalkyl carboxylic acid compounds (PFCAs) in environmental water. Herein, adopting perfluorotetradecanoic acid as the dummy template, selective molecularly imprinted composites (CNTs@ILs@MIPs) grafted carbon nanotubes integrating hydrophilic ionic liquids were successfully prepared via surface imprinting and dummy-template imprinting techniques. The obtained CNTs@ILs@MIPs were applied as selective extraction adsorbent for specifically extra...
Source: Talanta - April 16, 2024 Category: Chemistry Authors: Gang Li Yahan Cui Xiaonan Yang Xuelian Xin Hongyuan Yan Dandan Han Source Type: research
Generating robust aptamers for food analysis by sequence-based configuration optimization
Talanta. 2024 Apr 8;275:126044. doi: 10.1016/j.talanta.2024.126044. Online ahead of print.ABSTRACTAdvanced analytical techniques are emerging in the food industry. Aptamer-based biosensors achieve rapid and highly selective analysis, thus drawing particular attention. Aptamers are oligonucleotide probes screened via in vitro Systematic Evolution of Ligands by EXponential Enrichment (SELEX), which can bind with their specific targets by folding into three-dimensional configurations and accept various modifications to be incorporated into biosensors, showing great potential in food analysis. Unfortunately, aptamers obtained ...
Source: Talanta - April 16, 2024 Category: Chemistry Authors: Kaiyue Wei Ziyang Ye Wenhui Dong Ling Zhang Wenjing Wang Jiao Li Evgeni Eltzov Sai Wang Xiangzhao Mao Source Type: research
A portable solid sampling visualization nano-sensor for soil Cd based on "three-phase transforming" technique
Talanta. 2024 Apr 5;274:126055. doi: 10.1016/j.talanta.2024.126055. Online ahead of print.ABSTRACTDirect analysis of solid samples is always challenging for ionic sensors due to solidified elemental presence and matrix interference. In this work, a "three-phase transforming" technique was first established to make solid sampling elemental sensors and visual detection possible in the future. For Cd transforming from soil samples, a metal ceramic heater (MCH) electrothermal vaporizer (ETV) coupled with a dielectric barrier discharge quartz trap (DBD-QT) was first utilized to fulfill the solid sampling and preconcentration of...
Source: Talanta - April 16, 2024 Category: Chemistry Authors: Tengpeng Liu Xudong Huang Chunhui Wang Jixin Liu Xuefei Mao Source Type: research
Facile design of FeCu metal-organic frameworks anchored on layer Ti < sub > 3 < /sub > C < sub > 2 < /sub > T < sub > x < /sub > MXene for high-performance electrochemical sensing of resorcinol
Talanta. 2024 Apr 13;275:126100. doi: 10.1016/j.talanta.2024.126100. Online ahead of print.ABSTRACTThis work reports the rational design of a composite material by growing FeCu-MOF-919 on the surface of layered Ti3C2Tx MXene. The introduction of Ti3C2Tx MXene simultaneously weakens the aggregation of FeCu-MOF-919 and Ti3C2Tx MXene, which increases the electrochemical reaction active site of the composite material and improves the electrochemical activity. Interestingly, the FeCu-MOF-919/Ti3C2Tx based sensors were used to detect resorcinol (RS) with a wide linear range (0.5-152.5 μM), excellent sensitivity (0.23 μA μM-1 ...
Source: Talanta - April 16, 2024 Category: Chemistry Authors: Li Zhang Yu Han Ming Sun Fengbo Li Shaobin Li Tao Gui Source Type: research
Fabrication of molecularly imprinted carbon nanotubes integrating ionic liquids for efficient detection of perfluoroalkyl carboxylic acid in environmental water
Talanta. 2024 Apr 4;275:126017. doi: 10.1016/j.talanta.2024.126017. Online ahead of print.ABSTRACTIt is extremely significant while challenging to accurately detect low-levels of perfluoroalkyl carboxylic acid compounds (PFCAs) in environmental water. Herein, adopting perfluorotetradecanoic acid as the dummy template, selective molecularly imprinted composites (CNTs@ILs@MIPs) grafted carbon nanotubes integrating hydrophilic ionic liquids were successfully prepared via surface imprinting and dummy-template imprinting techniques. The obtained CNTs@ILs@MIPs were applied as selective extraction adsorbent for specifically extra...
Source: Talanta - April 16, 2024 Category: Chemistry Authors: Gang Li Yahan Cui Xiaonan Yang Xuelian Xin Hongyuan Yan Dandan Han Source Type: research
Generating robust aptamers for food analysis by sequence-based configuration optimization
Talanta. 2024 Apr 8;275:126044. doi: 10.1016/j.talanta.2024.126044. Online ahead of print.ABSTRACTAdvanced analytical techniques are emerging in the food industry. Aptamer-based biosensors achieve rapid and highly selective analysis, thus drawing particular attention. Aptamers are oligonucleotide probes screened via in vitro Systematic Evolution of Ligands by EXponential Enrichment (SELEX), which can bind with their specific targets by folding into three-dimensional configurations and accept various modifications to be incorporated into biosensors, showing great potential in food analysis. Unfortunately, aptamers obtained ...
Source: Talanta - April 16, 2024 Category: Chemistry Authors: Kaiyue Wei Ziyang Ye Wenhui Dong Ling Zhang Wenjing Wang Jiao Li Evgeni Eltzov Sai Wang Xiangzhao Mao Source Type: research
A portable solid sampling visualization nano-sensor for soil Cd based on "three-phase transforming" technique
Talanta. 2024 Apr 5;274:126055. doi: 10.1016/j.talanta.2024.126055. Online ahead of print.ABSTRACTDirect analysis of solid samples is always challenging for ionic sensors due to solidified elemental presence and matrix interference. In this work, a "three-phase transforming" technique was first established to make solid sampling elemental sensors and visual detection possible in the future. For Cd transforming from soil samples, a metal ceramic heater (MCH) electrothermal vaporizer (ETV) coupled with a dielectric barrier discharge quartz trap (DBD-QT) was first utilized to fulfill the solid sampling and preconcentration of...
Source: Talanta - April 16, 2024 Category: Chemistry Authors: Tengpeng Liu Xudong Huang Chunhui Wang Jixin Liu Xuefei Mao Source Type: research
Predicting ion mobility collision cross sections and assessing prediction variation by combining conventional and data driven modeling
Talanta. 2024 Mar 28;274:125970. doi: 10.1016/j.talanta.2024.125970. Online ahead of print.ABSTRACTThe use of collision cross section (CCS) values derived from ion mobility studies is proving to be an increasingly important tool in the characterization and identification of molecules detected in complex mixtures. Here, a novel machine learning (ML) based method for predicting CCS integrating both molecular modeling (MM) and ML methodologies has been devised and shown to be able to accurately predict CCS values for singly charged small molecular weight molecules from a broad range of chemical classes. The model performed fa...
Source: Talanta - April 15, 2024 Category: Chemistry Authors: Robbin Bouwmeester Keith Richardson Richard Denny Ian D Wilson Sven Degroeve Lennart Martens Johannes P C Vissers Source Type: research
