IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-19 DOI: 10.1016/j.talanta.2026.130159

Yuanyue Wu, Chunqian Yu, Yiwen Min, Changshun Chen, Ke Zhou, Wanying Zhai, Tianshu Zhou, Jingjing Deng

{"title":"Dual-substrate-based full-color fluorescent probe TPE-4PA@Tb/Eu-GMP-acac ICPs for alkaline phosphatase detection and its on-site application for algal bloom alert.","authors":"Yuanyue Wu, Chunqian Yu, Yiwen Min, Changshun Chen, Ke Zhou, Wanying Zhai, Tianshu Zhou, Jingjing Deng","doi":"10.1016/j.talanta.2026.130159","DOIUrl":"10.1016/j.talanta.2026.130159","url":null,"abstract":"The development of rapid, on-site analytical methods and test strips for alkaline phosphatase activity (APA) is crucial for addressing drinking water safety crises, as it enables eutrophication assessment and algal bloom warnings under phosphorus-limited conditions. In this study, we incorporate aggregation-induced emission luminogen (AIEgen) guest TPE-4PA into bimetallic lanthanide-based infinite coordination polymers (Tb/Eu-GMP ICPs). TPE-4PA exhibits unprecedented binding preference for Tb3+ over Eu3+, triggering coordination-induced emission (CIE) at 450 nm and modulating the antenna effect (AE) and the tandem energy transfer (TER) from Tb3+ to Eu3+. Subsequently, acetylacetone (acac) was further introduced to yield TPE-4PA@Tb/Eu-GMP-acac ICPs with an appropriate full-color fluoresce response capability. The addition of alkaline phosphatase (ALP) hydrolyzes GMP and TPE-4PA dual substrates, resulting in reduced characteristic emission of the bimetallic Ln-ICP host at 493, 548, 593, 619 and 703 nm, increased monomer emission of TPE-4PA at 392 nm, as well as the solvent-driven AIE of the enzymatic product TPE-4OH at 430 nm, which constitutes a novel ratiometric ALP sensing mechanism with pale-purple to blue fluorescence color shifts. Featuring high sensitivity, doubly assured selectivity, and operational simplicity, this \"all-in-one\" probe enables real-time APA monitoring via dual-substrate kinetics and is suitable for on-site ALP test strip development. Moreover, the unique color transition point of the dual-substrate-based TPE-4PA@Tb/Eu-GMP-acac ICPs probe can be designed to signal an APA surge prior to algal bloom onset, which holds significant potential for the development of microalgae pollution early-warning systems, thereby safeguarding drinking water safety.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130159"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148300521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-entropy multimetallic nitrogen-doped carbon for robust ammonium-ion storage. 高熵多金属氮掺杂碳稳健的氨离子存储。

IF 9.6 1区化学

Journal of Colloid and Interface Science Pub Date : 2026-12-01 Epub Date: 2026-06-24 DOI: 10.1016/j.jcis.2026.141010

Hucheng Fu, Yiting Xu, Yizhang Yang, Yanchen Chen, Qiuyan Luo, Yiping Xu, Juguo Dai, Dongxu Li, Qiaoyun Qin, Andreu Cabot, Conghui Yuan, Guorong Chen, Lizong Dai

{"title":"High-entropy multimetallic nitrogen-doped carbon for robust ammonium-ion storage.","authors":"Hucheng Fu, Yiting Xu, Yizhang Yang, Yanchen Chen, Qiuyan Luo, Yiping Xu, Juguo Dai, Dongxu Li, Qiaoyun Qin, Andreu Cabot, Conghui Yuan, Guorong Chen, Lizong Dai","doi":"10.1016/j.jcis.2026.141010","DOIUrl":"10.1016/j.jcis.2026.141010","url":null,"abstract":"Ammonium ions (NH4+), owing to their abundance, low cost, and environmental friendliness, have emerged as promising non-metallic charge carriers for next-generation aqueous energy storage systems. However, the lack of suitable electrode materials has so far hindered their practical application. In this study, we report the development of a high-entropy multimetallic electrode material comprising uniformly dispersed Mn, Fe, Co, Ni, and Cu species on a conductive graphitized nitrogen-doped carbon framework. This engineered electrode enables high-performance symmetric NH4+-ion supercapacitors. The multi-metal doping strategy significantly increases the density of electroactive sites, reduces NH4+ diffusion barriers, and enhances structural stability. The optimized electrodes deliver a high specific capacitance of 836 F g-1 at 1 A g-1 and demonstrate excellent cycling performance, retaining 97.2% of their initial capacity and nearly 100% Coulombic efficiency after 50,000 cycles in a three-electrode system. Moreover, the assembled symmetric devices achieve energy densities exceeding 53 Wh kg-1 at a power density of 891 W kg-1. Density functional theory calculations confirm that the synergistic interaction among multiple metal centers optimizes NH4+ adsorption and charge distribution, accounting for the superior electrochemical performance.","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"723 ","pages":"141010"},"PeriodicalIF":9.6,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148325341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to 'Design and development of lab-on-a-centrifuge based on liquid-core waveguide enhancement technology for colorimetric detection of soil Cr(VI) from sample-to-answer' [Talanta 305 (2026), 129673]. “基于液芯波导增强技术的实验室离心机的设计与开发，用于从样品到答案的土壤Cr（VI）比色检测”[Talanta 305(2026), 129673]。

IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-22 DOI: 10.1016/j.talanta.2026.130177

Bingyu Mu, Xing Na, Zhengqin Shi, Zhe Liu, Jixin Liu

引用次数: 0

Ultrasensitive, self-calibrating cortisol immunosensor enabled by dual-modal CuMOF-PEI@AuNPs@HRP immunoreceptor. 超灵敏，自校准皮质醇免疫传感器启用双峰CuMOF-PEI@AuNPs@HRP免疫受体。

IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-15 DOI: 10.1016/j.talanta.2026.130164

Xinyi Wang, Minghao Wang, Wenbin Zhang, Dewang Yan, Liubing Kong, Gaofeng Wang

{"title":"Ultrasensitive, self-calibrating cortisol immunosensor enabled by dual-modal CuMOF-PEI@AuNPs@HRP immunoreceptor.","authors":"Xinyi Wang, Minghao Wang, Wenbin Zhang, Dewang Yan, Liubing Kong, Gaofeng Wang","doi":"10.1016/j.talanta.2026.130164","DOIUrl":"10.1016/j.talanta.2026.130164","url":null,"abstract":"Accurate cortisol monitoring is essential for stress assessment and health management, yet reliable quantification remains challenging because signal fluctuations and matrix effects can compromise the performance of conventional single-mode immunosensors. Herein, we developed a fluorescence-colorimetric (FL-CL) dual-modal immunosensor based on a CuMOF-PEI@AuNPs@HRP (CPA) immunoreceptor for cortisol determination. The integrated sensing architecture generates correlated fluorescence and colorimetric responses from the same recognition event, which are combined through a normalized dual-signal output to improve calibration reliability. Under optimized conditions, the proposed sensor exhibited a detection limit of 0.22 ng/mL and a linear range of 3.1-200 ng/mL, covering physiologically relevant cortisol concentrations in saliva. Compared with single-modal assays and commercial kits, the proposed platform demonstrates enhanced sensitivity, improved correlation, good stability, and batch reproducibility. By integrating signal amplification, dual-modal readout, and simplified immunoreceptor fabrication within a single sensing platform, this work provides a reliable strategy for cortisol monitoring and offers potential for extension to other biomarker detection systems.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130164"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Smartphone-integrated bifunctional sensing platform for visual detection of ampicillin and tetracycline in animal manure. 基于智能手机集成的动物粪便氨苄西林和四环素双功能视觉检测平台。

IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-21 DOI: 10.1016/j.talanta.2026.130173

Ming-Ming Chen, Lu-Chen Cheng, Xiao-Yu Dong, Fang-Jie Zhao, Peng Wang

{"title":"Smartphone-integrated bifunctional sensing platform for visual detection of ampicillin and tetracycline in animal manure.","authors":"Ming-Ming Chen, Lu-Chen Cheng, Xiao-Yu Dong, Fang-Jie Zhao, Peng Wang","doi":"10.1016/j.talanta.2026.130173","DOIUrl":"10.1016/j.talanta.2026.130173","url":null,"abstract":"Antibiotic residues in environmental matrices pose escalating threats to ecosystems and human health, creating demand for rapid detection. Here, we present a portable smartphone-integrated bifunctional sensor based on Fe-CDs that enables sequential colorimetric and fluorescent detection of ampicillin (Amp) and tetracycline (TC). The Fe-CDs, synthesized via a one-pot hydrothermal process, exhibit stable fluorescence and intrinsic peroxidase-mimicking activity. Ampicillin inhibits the Fe-CDs nanozyme-catalyzed TMB/H2O2 chromogenic reaction via •OH consumption, allowing visual colorimetric quantification. Meanwhile, tetracycline strongly quenches the fluorescent signal of Fe-CDs through an inner filter effect, enabling a sensitive fluorescence readout. This bifunctional assay achieves high sensitivity (LOD as low as ∼0.012 μg/mL for Amp and 0.005 μg/mL for TC). By incorporating Fe-CDs onto paper test strips and analyzing with smartphone cameras, the platform allows real-time, rapid quantification of antibiotics in complex matrices. In manure samples, the sensor's results (recoveries ∼94.4-104.8%) agree well with LC-MS/MS measurements, underscoring its accuracy and robustness. Overall, the portable bifunctional Fe-CDs sensor provides a sensitive, field-deployable tool for environmental antibiotic surveillance.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130173"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148300602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to "Spatial confinement-enhanced CHA system based on tetrahedral DNA nanostructures for sensitive in situ mRNA analysis" [Talanta 306 (2026) 129764]. “基于四面体DNA纳米结构的空间约束增强CHA系统用于敏感的原位mRNA分析”[Talanta 306(2026) 129764]的更正。

IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-10 DOI: 10.1016/j.talanta.2026.130096

Yujie Wang, Tongtong Pan, Mengru Li, Xiaoyan Dai, Siyong Zhang, Hongmei Fu, Ying Chen, Chang Xue, Zhifa Shen, Liang Xu

引用次数: 0

Efficient analysis of n-alkanes by high-pressure photoionization-induced NO₂⁺ chemical ionization time-of-flight mass spectrometry. 高压光电离诱导NO2+化学电离飞行时间质谱法分析正构烷烃。

IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-15 DOI: 10.1016/j.talanta.2026.130161

Xuefeng Sun, Bo Li, Guolong Wang, Yifan Ding, Anshan Xiao

{"title":"Efficient analysis of n-alkanes by high-pressure photoionization-induced NO2+ chemical ionization time-of-flight mass spectrometry.","authors":"Xuefeng Sun, Bo Li, Guolong Wang, Yifan Ding, Anshan Xiao","doi":"10.1016/j.talanta.2026.130161","DOIUrl":"10.1016/j.talanta.2026.130161","url":null,"abstract":"Normal alkanes (n-alkanes) are important constituents of anthropogenic volatile organic compounds (VOCs) and petroleum products. Their rapid, sensitive, and selective detection is crucial for environmental monitoring and industrial process control. Conventional GC-based methods are time-consuming, while existing direct MS techniques often suffer from low sensitivity or severe fragmentation. In this study, we introduce a novel high-pressure photon ionization-NO2+ chemical ionization time-of-flight mass spectrometry (HPPI-PNO2CI-TOFMS) platform for the efficient analysis of C4-C11 n-alkanes. A vacuum ultraviolet (VUV) lamp is used to photoionize NO2 reagent gas at pressures of approximately 600-700 Pa, generating NO2+ reactant ions that undergo hydride-transfer reactions with n-alkanes to produce predominantly [M - H]+ ions with minimal fragmentation, with [M - H]+ branching ratios exceeding 90-96% for C4-C11 alkanes. Under optimized conditions (1 V, ∼660 Pa), limits of detection (LODs) reach ∼8.6 ppbv for n-butane and 0.21-2.57 ppbv for C5-C11 n-alkanes with 5 s integration times. The method was successfully applied to refinery gas samples, facilitating the selective and rapid quantification of n-alkanes against complex VOC backgrounds. However, this method does not detect C1-C3 n-alkanes and cannot distinguish n-alkanes from their branched or cyclic isomers by mass spectrometry alone. Nevertheless, the HPPI-PNO2CI-TOFMS thus provides a robust, real-time analytical tool characterized by high sensitivity, clean spectra, and minimal fragmentation, making it well suitable for environmental monitoring, emissions tracking, and industrial process control.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130161"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148300593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

¹O₂-driven photobleaching pathways of xanthene dyes: A comparative study via LC-QTOF-MS/MS analysis and FT-IR spectroscopy. 基于LC-QTOF-MS/MS分析和FT-IR光谱的二氧化氧驱动的杂蒽染料光漂白途径的比较研究

IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-20 DOI: 10.1016/j.talanta.2026.130176

Simone Bassini, Victoria Beltran, Nick Sleegers, Andrea Marchetti, Koen Janssens, Alexander L N van Nuijs, Karolien De Wael

{"title":"1O2-driven photobleaching pathways of xanthene dyes: A comparative study via LC-QTOF-MS/MS analysis and FT-IR spectroscopy.","authors":"Simone Bassini, Victoria Beltran, Nick Sleegers, Andrea Marchetti, Koen Janssens, Alexander L N van Nuijs, Karolien De Wael","doi":"10.1016/j.talanta.2026.130176","DOIUrl":"10.1016/j.talanta.2026.130176","url":null,"abstract":"Singlet oxygen (1O2)-driven photodegradation is a key factor that controls the stability of xanthene dyes and a mechanism of their photobleaching is still lacking. Here, we report a comparative photodegradation study of five xanthene dyes (i.e., erythrosin B, eosin Y, fluorescein, phloxine B and rose bengal) under illumination conditions maximizing 1O2 generation. Time-resolved degradation was analyzed mainly by LC-QTOF-MS and FTIR spectroscopy, enabling identification of major intermediates and allowing the description of a general degradation mechanism. Despite the different molecular structures, only two different pathways were identified: i) all dyes were consecutively oxidized, yielding a major product with partial cleavage of the tricyclic xanthene core; ii) dyes lacking chlorine substitution on the peripheral benzoate ring presented a faster route, leading to complete chromophore breakdown and formation of low molecular weight oxidation products. These results show a relationship between structure and degradation pathway and provide important insights relevant to design, lifetime and conservation of xanthene-based dyes.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130176"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148315133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

X-ray fluorescence analysis of contemporary metal sculptures. 当代金属雕塑的x射线荧光分析。

IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-16 DOI: 10.1016/j.talanta.2026.130167

Leonardo S G Teixeira, Gianni Gallello, Miguel de la Guardia

{"title":"X-ray fluorescence analysis of contemporary metal sculptures.","authors":"Leonardo S G Teixeira, Gianni Gallello, Miguel de la Guardia","doi":"10.1016/j.talanta.2026.130167","DOIUrl":"10.1016/j.talanta.2026.130167","url":null,"abstract":"A portable X-ray fluorescence spectrometer (pXRF) has been employed to study the composition of contemporary metal sculptures. The equipment calibration was verified against a reference material and by using circulating coins with compositions declared by central banks. It was shown that coins can serve as a cheaper alternative for verifying the accuracy of XRF measurements. The analyses of 14 sculptures revealed that the same object can exhibit parts with markedly different compositions, particularly when these parts are independent and perform different functions within the artwork. On the other hand, a tendency towards compositional homogeneity was observed across the main body of the same artwork, consistent with the use of a single metal alloy in the sculpture's manufacture. Furthermore, it was not possible to establish unequivocal compositional characteristics for works attributed to the same artist, and it was found that certified limited-edition sculptures exhibited high-quality bronze, whereas other works did not adhere to a specific metal-alloy standard, reflecting different manufacturing processes. It has been confirmed that compositional analysis of sculptures using pXRF can be important for the certification and authentication of these artworks, as well as for evaluating material quality and potential restorations.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130167"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Competitive kinetic mechanisms in one-pot isothermal amplification-CRISPR systems: From model construction to performance evaluation. 一锅等温扩增- crispr系统的竞争动力学机制：从模型构建到性能评估。

IF 6.7 1区化学

Talanta Pub Date : 2026-12-01 Epub Date: 2026-06-19 DOI: 10.1016/j.talanta.2026.130184

Hao Jiang, Junyuan Yang, Anyi Li, Di Mou, Yulin Deng, Xuefei Lv

{"title":"Competitive kinetic mechanisms in one-pot isothermal amplification-CRISPR systems: From model construction to performance evaluation.","authors":"Hao Jiang, Junyuan Yang, Anyi Li, Di Mou, Yulin Deng, Xuefei Lv","doi":"10.1016/j.talanta.2026.130184","DOIUrl":"10.1016/j.talanta.2026.130184","url":null,"abstract":"The urgent demand for integrating real-time molecular diagnosis with isothermal amplification and CRISPR-based detection has underscored the critical need for streamlined, single-tube one-pot methodologies. However, such integration is often hindered by temporal incompatibilities, including premature activation of early amplification products by CRISPR components, which leads to primer degradation and reduced amplification efficiency. To address this challenge, we established a dedicated quantitative competitive kinetic framework for enzyme-free isothermal amplification-CRISPR one-pot systems, using hybridization chain reaction (HCR) and catalytic hairpin assembly (CHA) as representative models. Two core inhibitory mechanisms were identified: \"pre-activation-degradation inhibition\", in which early CRISPR activation degrades amplification intermediates, and \"substrate competition inhibition\" in which hairpin probes compete with reporter probes for CRISPR trans-cleavage. Corresponding kinetic equations were derived to describe these interactions quantitatively. Systematic experimental validation of key parameters such as DNA activator concentration, reporter probe concentration, hairpin probe concentration, and ribonucleoprotein (RNP) complex concentration, confirmed the reliability and predictive accuracy of the proposed models. These results provide mechanistic insights into the factors governing one-pot HCR/CHA-CRISPR coupling and identify conditions that optimize assay performance. Overall, this study offers a theoretical foundation and experimental guidance for probe design, reaction condition optimization, and sensitivity enhancement in enzyme-free isothermal amplification-CRISPR one-pot platforms, and provides a general reference for the rational integration of isothermal amplification and CRISPR-based detection.","PeriodicalId":435,"journal":{"name":"Talanta","volume":"310 ","pages":"130184"},"PeriodicalIF":6.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148300341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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