A highly sensitive, long-time stable Ag/AgCl ultra-micro sensor for in situ monitoring chloride ions inside the crevice using SECM
Talanta. 2024 Apr 4;274:126026. doi: 10.1016/j.talanta.2024.126026. Online ahead of print.ABSTRACTTracking the variation of Cl- timely within the crevice is of great significance for comprehending the dynamic mechanism of crevice corrosion. The reported chloride ion selective electrodes are difficult to realize the long-time Cl- detection inside the confined crevice, due to their millimeter size or a relative limited lifespan. For this purpose, an Ag/AgCl ultra-micro sensor (UMS) with a radius of 12.5 μm was fabricated and optimized using laser drawing and electrodeposition techniques. Results show the AgCl film's structu...
Source: Talanta - April 11, 2024 Category: Chemistry Authors: Hang Zhang Hao-Ran Yuan Ze-Jie Zhu Qin-Hao Zhang Yi-Han Bai Jiang-Ying Wang Fa-He Cao Source Type: research
Dual amplification for PEC ultrasensitive aptasensing of biomarker HER-2 based on Z-scheme UiO-66/CdIn < sub > 2 < /sub > S < sub > 4 < /sub > heterojunction and flower-like PtPdCu nanozyme
Talanta. 2024 Apr 3;274:126034. doi: 10.1016/j.talanta.2024.126034. Online ahead of print.ABSTRACTAs an important prognostic indicator in breast cancer, human epithelial growth factor receptor-2 (HER-2) is of importance for assessing prognosis of breast cancer patients, whose accurate and facile analysis are imperative in clinical diagnosis and treatment. Herein, photoactive Z-scheme UiO-66/CdIn2S4 heterojunction was constructed by a hydrothermal method, whose optical property and photoactivity were critically investigated by a range of techniques, combined by elucidating the interfacial charge transfer mechanism. Meanwhil...
Source: Talanta - April 11, 2024 Category: Chemistry Authors: Qing-Ying Ai Ben-Fang Xu Fan Xu Ai-Jun Wang Li-Ping Mei Liang Wu Pei Song Jiu-Ju Feng Source Type: research
Portable one-step effervescence tablet-based microextraction combined with smartphone digital image colorimetry: Toward field and rapid detection of trace nickel ion
In this study, the one-step switchable hydrophilic solvent (SHS)-based effervescence tablet microextraction (ETME) was coupled with smartphone digital image colorimetry (SDIC) for the field detection of nickel ion (Ni2+) for the first time. Both extractant and CO2 were generated in situ when the novel SHS-based effervescence tablet was placed in the sample solution. The complexant 1-(2-pyridinylazo)-2-naphthaleno (PAN) dissolved from the effervescence tablet to form a stable complex with Ni2+, and the extractant was uniformly dispersed in the sample solution under the action of CO2 and fully in contact with Ni-PAN, which e...
Source: Talanta - April 11, 2024 Category: Chemistry Authors: Yiping Sun Xiaofang Yang Jiayi Hu Fuchun Ji Huajian Chi Ya Liu Kan Hu Fangfang Hao Xiaodong Wen Source Type: research
RuZn NPs with electroactivity and oxidase-like property for dual-mode anti-cancer drug monitoring
Talanta. 2024 Apr 8;274:126075. doi: 10.1016/j.talanta.2024.126075. Online ahead of print.ABSTRACT6-mercaptopurine (6-MP) as the effective anti-cancer drug was used for the treatment of Crohn's disease and acute lymphoblastic leukaemia, but the response to maintenance therapy was variable with individual differences. In order to control the dosage and decrease the side effects of 6-MP, a sensitive and stable assay was urgently needed for 6-MP monitoring. Herein, RuZn NPs with electrochemical oxidation property and oxidase-like activity was proposed for dual-mode 6-MP monitoring. Burr-like RuZn NPs were prepared and explore...
Source: Talanta - April 11, 2024 Category: Chemistry Authors: Zhao Jin Fang Peng Qiaodan Du Dan Liang Yuan Zhao Source Type: research
Smartphone-based dual inverse signal MOFs fluorescence sensing for intelligent on-site visual detection of malachite green
Talanta. 2024 Apr 4;274:126039. doi: 10.1016/j.talanta.2024.126039. Online ahead of print.ABSTRACTThe development of intelligent, sensitive, and visual methods for the rapid detection of veterinary drug residues is essential to ensure food quality and safety. Here, a smartphone-based dual inverse signal MOFs fluorescence sensing system was proposed for intelligent in-site visual detection of malachite green (MG). A UiO-66-NH2@RhB-dual-emission fluorescent probe was successfully synthesized in one step using a simple one-pot method. The inner filter effect (IFE) quenches the red fluorescence, while hydrogen bonding interact...
Source: Talanta - April 11, 2024 Category: Chemistry Authors: Lianshuang Jiang Chenghui Li Xiandeng Hou Source Type: research
Design, synthesis, and evaluation of a carboxylesterase detection probe with therapeutic effects
In this study, a lysosomal targeting fluorescent probe recognition on CEs was designed and synthesized. The obtained probe BF2-cur-Mor demonstrated excellent selectivity, sensitivity, pH-independence, and enzyme affinity towards CEs within 5 min. BF2-cur-Mor could enable recognition of intracellular CEs and elucidate that the CEs content of different cancer cells follows the rule of HepG2 > HCT-116 > A549 > HeLa, and the CEs expression level of hepatoma cancer cells far exceeds that of normal hepatic cells, being in good agreement with the previous reports. The ability of BF2-cur-Mor to monitor CEs in vivo was con...
Source: Talanta - April 11, 2024 Category: Chemistry Authors: Xia Lin Min Liu Qingyuan Yi Ying Zhou Jinchan Su Binyang Qing Yaqi Lu Chunxiao Pu Weisen Lan Lianjia Zou Jianyi Wang Source Type: research
Synthesis of a COF-on-MOF hybrid nanomaterial for enhanced colorimetric biosensing
Talanta. 2024 Apr 7;274:126071. doi: 10.1016/j.talanta.2024.126071. Online ahead of print.ABSTRACTThe construction of hybrid materials is significant for the exploration of functionalities in colorimetric biosensing due to its structural designability and synergy effects. In this work, a COF-on-MOF hybrid nanomaterial has been newly synthesized for colorimetric biosensing. Experimental results reveal that on-surface synthesis of COF on MOF brings nanoscale proximity between COF and MOF, which exhibits more than two folds of peroxidase-like activity as compared to single Fe-MOF. Therefore, by using the MCA@Fe-MOF nanomateri...
Source: Talanta - April 11, 2024 Category: Chemistry Authors: Haojie Xie Lin Wang Xiaomeng Yu Tianci Zhou Minghui Wang Jie Yang Tao Gao Genxi Li Source Type: research
On-site monitoring of dissolved Sb species in natural waters by an automatic system using flow injection coupled with hydride generation atomic fluorescence spectrometer
In this study, an automated, portable, and cost-effective system was developed for field simultaneous analysis of Sb(III) and Sb(III + V) in natural waters. The system comprised a portable atomic fluorescence spectrometer equipped with a built-in electrochemical H2 generator to reduce the consumption of acid/borohydride solution and make the atomizer more stable for on-site analysis. Flow injection technique was also used to achieve on-line pretreatment of water samples, including filtration, acidification, pre-reduction, and hydride generation procedures. Under the optimal conditions, the limits of detection (3σ, n = 11)...
Source: Talanta - April 11, 2024 Category: Chemistry Authors: Luodan Chen Ziyun Zhong Rongkun Wu Qinglin Lin Zhenbin Gong Dongxing Yuan Source Type: research
Integration and holistic analysis of multiple multidimensional soil data sets
We present a statistical workflow designed to effectively analyse complex, multidimensional systems, even in the presence of confounding variables. The developed methodology involves exploratory analysis to identify the presence of confounding variables, followed by data decomposition (including strategies for both compositional and non-compositional quantitative data) to minimise the influence of these confounding factors such as sampling site/location. These data processing methods then allow for common patterns to be highlighted in the data, including the identification of biomarkers and determination of non-trivial ass...
Source: Talanta - April 10, 2024 Category: Chemistry Authors: Lisa I Pilkington William Kerner Daniela Bertoldi Roberto Larcher Soon A Lee Matthew R Goddard Davide Albanese Pietro Franceschi Bruno Fedrizzi Source Type: research
A dual recognition-based strategy employing Ni-modified metal-organic framework for in situ screening of SIRT1 inhibitors from Chinese herbs
Talanta. 2024 Mar 27;274:125975. doi: 10.1016/j.talanta.2024.125975. Online ahead of print.ABSTRACTSirtuin1 (SIRT1), an NAD+-dependent histone deacetylase, plays a crucial role in regulating molecular signaling pathways. Recently, inhibition of SIRT1 rather than its activation shows the therapeutic potential for central nervous system disorder, however, the discovered SIRT1 inhibitors remains limited. In this work, a dual recognition-based strategy was developed to screen SIRT1 inhibitors from natural resources in situ. This approach utilized a Ni-modified metal-organic framework (Ni@Tyr@UiO-66-NH2) along with cell lysate ...
Source: Talanta - April 10, 2024 Category: Chemistry Authors: Xinlin Chen Lihong Hong Ying Wu Yucheng Gu Jianguang Luo Lingyi Kong Source Type: research
Hierarchically porous ZnO derived from zeolitic imidazolate frameworks for high-sensitive MEMS NO < sub > 2 < /sub > sensor
Talanta. 2024 Mar 25;274:125995. doi: 10.1016/j.talanta.2024.125995. Online ahead of print.ABSTRACTThree-dimensional (3D) porous metal oxide nanomaterials with controllable morphology and well-defined pore size have attracted extensive attention in the field of gas sensing. Herein, hierarchically porous ZnO-450 was obtained simply by annealing Zeolitic Imidazolate Frameworks (ZIF-90) microcrystals at an optimal temperature of 450 °C, and the effect of annealing temperature on the formation of porous nanostructure was discussed. Then the as-obtained ZnO-450 was employed as sensing materials to construct a Micro-Electro-Mec...
Source: Talanta - April 10, 2024 Category: Chemistry Authors: Dan Zhang Na Luo Zhenggang Xue Yueling Bai Jiaqiang Xu Source Type: research
Activates B lymphocytes and enhanced immune response: A promising adjuvant based on PLGA nanoparticle to improve the sensitivity of ZEN monoclonal antibody
Talanta. 2024 Apr 9;274:126005. doi: 10.1016/j.talanta.2024.126005. Online ahead of print.ABSTRACTIn preparing monoclonal antibodies by hybridoma cell technology, the quality of B lymphocytes used for cell fusion directly affects the sensitivity of monoclonal antibodies. To obtain B-lymphocytes producing high-quality specific antibodies for cell fusion during the immunization phase of the antigen, we prepared a TH2-Cell stimulatory delivery system as a novel adjuvant. Astragalus polysaccharide has a good ability to enhance antigenic immune response, and it was encapsulated in biocompatible materials PLGA as an immunostimul...
Source: Talanta - April 10, 2024 Category: Chemistry Authors: Chengchen Pang Bei Yuan Keyun Ren Haitao Xu Kunying Nie Chunlei Yu Zhanli Liu Yanyan Zhang Sibel A Ozkan Qingqing Yang Source Type: research
A stable and flexible Au@Ag NPs/PVA SERS platform for thiram residue detection on rough surface
Talanta. 2024 Mar 27;274:126008. doi: 10.1016/j.talanta.2024.126008. Online ahead of print.ABSTRACTFlexible and transparent surface-enhanced Raman scattering (SERS) substrates have gained great attention in analysis field as they offer a fast, non-destructive, and highly sensitive platform for in-situ detection. In this work, we present a facile one-pot strategy for synthesizing gold-cored silver shell nanoparticles (Au@Ag NPs) in the polyvinyl alcohol (PVA) colloid. With no other reducing agents, PVA can serve as both reducing and stabilizing agents for forming Au@Ag NPs. Besides, PVA acts as a scaffold to maintain SERS "...
Source: Talanta - April 10, 2024 Category: Chemistry Authors: Tao Shao Jinsong Xu Hang Zhong Yi Hu Jun Chen Source Type: research
Dextrin-assisted gel electromembrane extraction of chiral drugs: Improving the extraction efficiency and investigation of enantioselectivity of extraction
Talanta. 2024 Apr 4;274:126016. doi: 10.1016/j.talanta.2024.126016. Online ahead of print.ABSTRACTThe present study investigates the use of dextrins (maltodextrin, β-cyclodextrin, and hydroxypropyl-β-cyclodextrin) to improve the efficiency of the agarose-based gel electromembrane extraction technique for extracting chiral basic drugs (citalopram, hydroxyzine, and cetirizine). Additionally, it examines the enantioselectivity of the extraction process for these drugs. To achieve these, dextrins were incorporated into either the sample solution, the membrane, or the acceptor solution, and then the extraction procedure was p...
Source: Talanta - April 10, 2024 Category: Chemistry Authors: Mustafa Alawadi Ali Reza Fakhari Majid Maghsoudi Saeed Nojavan Source Type: research
Water bridges as the trigger in an amino functionalized Zn-MOF for highly selective and sensitive fluorescent sensing of water
Talanta. 2024 Apr 7;274:126068. doi: 10.1016/j.talanta.2024.126068. Online ahead of print.ABSTRACTWater is a fundamental element for life. The highly selective and sensitive sensing of water is always attractive for mankind in activities such as physiological processes study and extraterrestrial life exploration. Fluorescent MOFs with precise channels and functional groups might specifically recognize water molecules with hydrogen-bond interaction or coordination effects and work as water sensors. As a proof of concept, herein, an amino functionalized Zn-MOF (named as complex 1) with pores that just right for water molecul...
Source: Talanta - April 10, 2024 Category: Chemistry Authors: Ping Ju GuiXue Zhang Wenhui Lu Shuping Wang Anzhang Li Qingxiang Zhang Jingyi Xin Linglong Shen Long Jiang Ensheng Zhang Source Type: research
