The polymeric semiconductor photocatalyst graphitic carbon nitride (g-C3N4) has attracted considerable attention due to its visible-light responsiveness and excellent biocompatibility. However, the photocatalytic efficiency of bulk g-C3N4 (CNB) remains insufficient for pratical applications, primarily due to its limited light absorption range and the rapid charge carrier recombination. In this study, K+-doped crystalline g-C3N4 with cyano defects (CNK) was synthesized by the calcination of dicyandiamide in the presence of KCl. The addition of KCl promoted the formation of K+-doped crystalline g-C3N4 with cyano defects. The optimized photocatalyst (CNK2) exhibits the highest photocatalytic activity for NO oxidation, achieving a removal rate of 47.40%, which is 2.1 times higher than that of CNB. This enhancement is mainly attributed to the increased generation of reactive oxygen species (ROS), particularly superoxide radicals (·O2−) and singlet oxygen (1O2). Furthermore, improved performance in photocatalytic CO2-to-CH4 conversion was also observed, which is attributed to the formation of a build-in electric field (BIEF) induced by K+ ion doping and the introduction of cyano defects.
{"title":"Enhancing the photocatalytic activity of crystalline g-C3N4 towards NO oxidation and CO2 reduction through K+-doping and cyano defect engineering","authors":"Zhou Li , Mengxue Yu , Shixin Chang , Zhibin Huang , Zhenmin Cheng , Weibin Zhang , Sónia A.C. Carabineiro , Zhigao Xu , Kangle Lv","doi":"10.1016/j.cjsc.2025.100698","DOIUrl":"10.1016/j.cjsc.2025.100698","url":null,"abstract":"<div><div>The polymeric semiconductor photocatalyst graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) has attracted considerable attention due to its visible-light responsiveness and excellent biocompatibility. However, the photocatalytic efficiency of bulk g-C<sub>3</sub>N<sub>4</sub> (CNB) remains insufficient for pratical applications, primarily due to its limited light absorption range and the rapid charge carrier recombination. In this study, K<sup>+</sup>-doped crystalline g-C<sub>3</sub>N<sub>4</sub> with cyano defects (CNK) was synthesized by the calcination of dicyandiamide in the presence of KCl. The addition of KCl promoted the formation of K<sup>+</sup>-doped crystalline g-C<sub>3</sub>N<sub>4</sub> with cyano defects. The optimized photocatalyst (CNK2) exhibits the highest photocatalytic activity for NO oxidation, achieving a removal rate of 47.40%, which is 2.1 times higher than that of CNB. This enhancement is mainly attributed to the increased generation of reactive oxygen species (ROS), particularly superoxide radicals (·O<sub>2</sub><sup>−</sup>) and singlet oxygen (<sup>1</sup>O<sub>2</sub>). Furthermore, improved performance in photocatalytic CO<sub>2</sub>-to-CH<sub>4</sub> conversion was also observed, which is attributed to the formation of a build-in electric field (BIEF) induced by K<sup>+</sup> ion doping and the introduction of cyano defects.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"45 1","pages":"Article 100698"},"PeriodicalIF":10.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145941518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.cjsc.2025.100745
Ziqiang Wang , Han Lin , Wenxin Wang , Hongjie Yu , You Xu , Kai Deng , Hongjing Wang , Liang Wang
The electrochemical upgrading of polyethylene terephthalate (PET) plastics represents a highly promising strategy for achieving high-value utilization of waste resources, and its efficiency is highly related to identify active electrocatalysts for PET-derived ethylene glycol oxidation reaction (EGOR). In this work, atomically thin high-entropy PdPtRhFeCuMo metallene nanoribbons (PdPtRhFeCuMo HMRs) have been synthesized and served as high-performance catalysts for electro-reforming PET plastic, which possess a high current density of 180 mA cm−2 at a low potential of 0.9 V for EGOR, with excellent Faraday efficiency (FE) of 96.81% for highly efficient and selective conversion of EG into high-value-added glycolic acid (GA). Experimental and theoretical results reveal that the multi-metallic synergistic effect of PdPtRhFeCuMo HMRs effectively modulates adsorption behavior of intermediates and reduce the EGOR energy barrier, thus promoting the selective EG-to-GA conversion. This study proposes the reasonable design of high-entropy metallene nanoribbons for the electrochemical upgrading of PET plastics to high-value C2 products.
聚对苯二甲酸乙二醇酯（PET）塑料的电化学升级是实现废物资源高价值利用的一种非常有前途的策略，其效率与PET衍生的乙二醇氧化反应（EGOR）的活性电催化剂的鉴定高度相关。本研究合成了原子薄的高熵pdptrfecumo金属烯纳米带（pdptrfecumo HMRs），作为电重整PET塑料的高性能催化剂，在0.9 V的低电位下具有180 mA cm−2的高电流密度，具有96.81%的法拉第效率（FE），可将EG高效、选择性地转化为高附加值的乙醇酸（GA）。实验和理论结果表明，PdPtRhFeCuMo HMRs的多金属协同效应可以有效调节中间体的吸附行为，降低EGOR的能垒，从而促进EGOR向ga的选择性转化。本研究提出了高熵金属烯纳米带的合理设计，用于PET塑料的电化学升级生产高价值的C2产品。
{"title":"High-entropy PdPtRhFeCuMo metallene nanoribbons for electro-reforming PET plastic into glycolic acid","authors":"Ziqiang Wang , Han Lin , Wenxin Wang , Hongjie Yu , You Xu , Kai Deng , Hongjing Wang , Liang Wang","doi":"10.1016/j.cjsc.2025.100745","DOIUrl":"10.1016/j.cjsc.2025.100745","url":null,"abstract":"<div><div>The electrochemical upgrading of polyethylene terephthalate (PET) plastics represents a highly promising strategy for achieving high-value utilization of waste resources, and its efficiency is highly related to identify active electrocatalysts for PET-derived ethylene glycol oxidation reaction (EGOR). In this work, atomically thin high-entropy PdPtRhFeCuMo metallene nanoribbons (PdPtRhFeCuMo HMRs) have been synthesized and served as high-performance catalysts for electro-reforming PET plastic, which possess a high current density of 180 mA cm<sup>−2</sup> at a low potential of 0.9 V for EGOR, with excellent Faraday efficiency (FE) of 96.81% for highly efficient and selective conversion of EG into high-value-added glycolic acid (GA). Experimental and theoretical results reveal that the multi-metallic synergistic effect of PdPtRhFeCuMo HMRs effectively modulates adsorption behavior of intermediates and reduce the EGOR energy barrier, thus promoting the selective EG-to-GA conversion. This study proposes the reasonable design of high-entropy metallene nanoribbons for the electrochemical upgrading of PET plastics to high-value C<sub>2</sub> products.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 12","pages":"Article 100745"},"PeriodicalIF":10.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.cjsc.2025.100729
Yuxin Wang , Xueqiang Guo , Chao Zhi , Lifei Yin , Meng Wang , Jinping Li , Libo Li , Jia Yao
The quantitative detection of biological metabolites is a crucial route for early diagnosis of human diseases. Exhaled ammonia (NH3), originating from abnormal metabolism, is normally recognized as the biomarker for liver and kidney lesions. Therefore, developing highly sensitive fluorescent sensing materials is expected to replace the traditional clinical blood tests and facilitate painless diagnosis and telemedicine for patients. However, the weak interaction for ammonia and the small color switching range of fluorescence sensors become the most pressing problem at present. Herein, a porphyrin-based hydrogen-bonded organic framework (HOF-6) with abundant supermolecule interactions in the confined pore space is developed for highly sensitive ammonia detection. The strong interactions between ammonia and the framework greatly promote the electron rearrangement and enhance the intensity of fluorescence, enabling HOF-6 to successfully achieve trace amounts of ammonia sensing with the limit detection of 0.2 ppm. With the ultrahigh selectivity for ammonia, HOF-6 can accurately determine the amount of ammonia in breath of patients, and the test results are highly consistent with blood ammonia levels. The tailor-made multiple interactions in the confined pore space provide an effective approach for highly sensitive ammonia detection, as well as brings good news to liver and kidney patients for non-invasive diagnosis and real-time health monitoring.
{"title":"Hydrogen-bonded organic framework with ammonia recognition “pocket” for exhaled ammonia fluorescence sensing","authors":"Yuxin Wang , Xueqiang Guo , Chao Zhi , Lifei Yin , Meng Wang , Jinping Li , Libo Li , Jia Yao","doi":"10.1016/j.cjsc.2025.100729","DOIUrl":"10.1016/j.cjsc.2025.100729","url":null,"abstract":"<div><div>The quantitative detection of biological metabolites is a crucial route for early diagnosis of human diseases. Exhaled ammonia (NH<sub>3</sub>), originating from abnormal metabolism, is normally recognized as the biomarker for liver and kidney lesions. Therefore, developing highly sensitive fluorescent sensing materials is expected to replace the traditional clinical blood tests and facilitate painless diagnosis and telemedicine for patients. However, the weak interaction for ammonia and the small color switching range of fluorescence sensors become the most pressing problem at present. Herein, a porphyrin-based hydrogen-bonded organic framework (HOF-6) with abundant supermolecule interactions in the confined pore space is developed for highly sensitive ammonia detection. The strong interactions between ammonia and the framework greatly promote the electron rearrangement and enhance the intensity of fluorescence, enabling HOF-6 to successfully achieve trace amounts of ammonia sensing with the limit detection of 0.2 ppm. With the ultrahigh selectivity for ammonia, HOF-6 can accurately determine the amount of ammonia in breath of patients, and the test results are highly consistent with blood ammonia levels. The tailor-made multiple interactions in the confined pore space provide an effective approach for highly sensitive ammonia detection, as well as brings good news to liver and kidney patients for non-invasive diagnosis and real-time health monitoring.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 12","pages":"Article 100729"},"PeriodicalIF":10.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.cjsc.2025.100758
Jisung Yoon , Junghum Park , Hojae Lee , Sang won Lee , Miju Ku , Junseop Lee , Jonghyuck Lee , Tae ho Shin , Young-Beom Kim
Metal-supported solid oxide fuel cells (MS-SOFCs) have recently gained significant attention as an advanced SOFC technology, owing to their excellent mechanical robustness, ease of handling, and high manufacturability. The use of metal substrates enables improved durability under thermal and redox cycling, and allows for thinner electrolyte layers, contributing to enhanced performance. However, their fabrication typically requires high-temperature sintering to ensure adequate material properties and adhesion, as most SOFC components are ceramic. These high-temperature processes can lead to undesirable effects, including metal support oxidation, chemical side reactions, and accelerated particle growth, which degrade cell performance. This study introduces an ultra-fast sintering approach for MS-SOFC fabrication by directly integrating stainless-steel metal supports with nickel-yttria-stabilized zirconia (Ni-YSZ) composite anode active layers. The application of flash light sintering—an innovative ultra-fast technique—effectively suppressed Ni catalyst particle growth, expanding the electrochemical reaction area while minimizing material diffusion between the metal support and anode layer. As a result, the fabricated cells achieved a stable open-circuit voltage (OCV) exceeding 1 V at 650 °C and a peak power density of 412 mW/cm2, representing an approximately 426.3% performance improvement over conventionally sintered cells. This research presents a transformative strategy for SOFC manufacturing, addressing the challenges of conventional long-duration heat treatments and demonstrating significant potential for advancing energy conversion technologies.
{"title":"Enhancing the electrochemical performance of Ni-based electrodes via flash light sintering for metal-supported solid oxide fuel cells (MS-SOFCs)","authors":"Jisung Yoon , Junghum Park , Hojae Lee , Sang won Lee , Miju Ku , Junseop Lee , Jonghyuck Lee , Tae ho Shin , Young-Beom Kim","doi":"10.1016/j.cjsc.2025.100758","DOIUrl":"10.1016/j.cjsc.2025.100758","url":null,"abstract":"<div><div>Metal-supported solid oxide fuel cells (MS-SOFCs) have recently gained significant attention as an advanced SOFC technology, owing to their excellent mechanical robustness, ease of handling, and high manufacturability. The use of metal substrates enables improved durability under thermal and redox cycling, and allows for thinner electrolyte layers, contributing to enhanced performance. However, their fabrication typically requires high-temperature sintering to ensure adequate material properties and adhesion, as most SOFC components are ceramic. These high-temperature processes can lead to undesirable effects, including metal support oxidation, chemical side reactions, and accelerated particle growth, which degrade cell performance. This study introduces an ultra-fast sintering approach for MS-SOFC fabrication by directly integrating stainless-steel metal supports with nickel-yttria-stabilized zirconia (Ni-YSZ) composite anode active layers. The application of flash light sintering—an innovative ultra-fast technique—effectively suppressed Ni catalyst particle growth, expanding the electrochemical reaction area while minimizing material diffusion between the metal support and anode layer. As a result, the fabricated cells achieved a stable open-circuit voltage (OCV) exceeding 1 V at 650 °C and a peak power density of 412 mW/cm<sup>2</sup>, representing an approximately 426.3% performance improvement over conventionally sintered cells. This research presents a transformative strategy for SOFC manufacturing, addressing the challenges of conventional long-duration heat treatments and demonstrating significant potential for advancing energy conversion technologies.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 12","pages":"Article 100758"},"PeriodicalIF":10.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.cjsc.2025.100749
Zhiqi Hu , Lingling Wu , Duo Zhang , Yixue An , Jiao Wang , Binbin Zhao , Robert Chunhua Zhao , Rong Cao , Xue Yang
Metal-organic frameworks (MOFs) hold great promise for wound healing applications due to their high surface area, tunable pore structures, and tailored functionalities. However, a significant challenge lies in transforming pristine MOFs powders into ultrathin and flexible dressings that are compatible with soft biological systems. The current limitations of MOFs in practical usability and versatility hinder their integration into advanced wound dressings. Herein, we integrate MOF (ZIF-8) with an ultrathin cellulose membrane to form MOF-based matrix membranes (MMMs) that exhibit high transparency, exceptional mechanical stability, and satisfactory antimicrobial functionality for effective bacterial wound healing. The resulting MMMs can be fabricated into multifunctional dressings of various shapes and sizes, optimized for tissue applications, while maintaining excellent water-vapor permeability and patient compliance. Both in vitro and in vivo experiments demonstrated that the MMMs exhibit outstanding biocompatibility, antibacterial activity, and antioxidant properties, significantly accelerating the healing of bacterial-infected wounds. This work presents a transformative approach to wound care, establishing a foundation for next-generation dressings that combine the multifunctionality of MOFs with the mechanical and biological compatibility required for clinical applications.
{"title":"Ultrathin transparent metal-organic framework-based nanocomposite membranes for antibacterial wound healing","authors":"Zhiqi Hu , Lingling Wu , Duo Zhang , Yixue An , Jiao Wang , Binbin Zhao , Robert Chunhua Zhao , Rong Cao , Xue Yang","doi":"10.1016/j.cjsc.2025.100749","DOIUrl":"10.1016/j.cjsc.2025.100749","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) hold great promise for wound healing applications due to their high surface area, tunable pore structures, and tailored functionalities. However, a significant challenge lies in transforming pristine MOFs powders into ultrathin and flexible dressings that are compatible with soft biological systems. The current limitations of MOFs in practical usability and versatility hinder their integration into advanced wound dressings. Herein, we integrate MOF (ZIF-8) with an ultrathin cellulose membrane to form MOF-based matrix membranes (MMMs) that exhibit high transparency, exceptional mechanical stability, and satisfactory antimicrobial functionality for effective bacterial wound healing. The resulting MMMs can be fabricated into multifunctional dressings of various shapes and sizes, optimized for tissue applications, while maintaining excellent water-vapor permeability and patient compliance. Both <em>in vitro</em> and <em>in vivo</em> experiments demonstrated that the MMMs exhibit outstanding biocompatibility, antibacterial activity, and antioxidant properties, significantly accelerating the healing of bacterial-infected wounds. This work presents a transformative approach to wound care, establishing a foundation for next-generation dressings that combine the multifunctionality of MOFs with the mechanical and biological compatibility required for clinical applications.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 12","pages":"Article 100749"},"PeriodicalIF":10.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.cjsc.2025.100759
Gui-Xin Yan , Er-Xia Chen , Jin-Xia Yang , Jian Zhang , Qipu Lin
Chiral metal-organic clusters (MOCs) integrating lanthanide ions (Ln3+) and organic luminophores present a promising platform for modulating circularly polarized luminescence (CPL). However, achieving dual-wavelength CPL in discrete cluster systems constitutes a considerable challenge. Herein, two enantiomeric pairs of heterometallic Eu–Sn oxo clusters, designated as Sn2EuL2-R/S and Sn2EuL4-R/S, were strategically synthesized using axially chiral binaphthol-phosphonate ligands. These hybrid clusters exhibit dual emission, characterized by a broad ligand-derived fluorescence band superimposed with sharp, characteristic Eu3+ f-f transitions, which enables excitation-dependent luminescence color tuning. Their emission profiles and quantum yields are found to be exquisitely adjusted by the distinct coordination environments of Sn4+ centers. Notably, Sn2EuL2-R/S demonstrates CPL activity in both near-UV (|glum| = 1.7 × 10−3) and visible (|glum| = 3.1 × 10−2) regions. This work not only reports the first instance of dual-wavelength CPL in a lanthanide/tin oxo complex but also establishes a robust design strategy for fabricating color-tunable chiral photonic materials.
{"title":"Chiral europium-organotin oxo-clusters with dual-emission circularly polarized luminescence","authors":"Gui-Xin Yan , Er-Xia Chen , Jin-Xia Yang , Jian Zhang , Qipu Lin","doi":"10.1016/j.cjsc.2025.100759","DOIUrl":"10.1016/j.cjsc.2025.100759","url":null,"abstract":"<div><div>Chiral metal-organic clusters (MOCs) integrating lanthanide ions (Ln<sup>3+</sup>) and organic luminophores present a promising platform for modulating circularly polarized luminescence (CPL). However, achieving dual-wavelength CPL in discrete cluster systems constitutes a considerable challenge. Herein, two enantiomeric pairs of heterometallic Eu–Sn oxo clusters, designated as Sn<sub>2</sub>EuL<sub>2</sub>-R/S and Sn<sub>2</sub>EuL<sub>4</sub>-R/S, were strategically synthesized using axially chiral binaphthol-phosphonate ligands. These hybrid clusters exhibit dual emission, characterized by a broad ligand-derived fluorescence band superimposed with sharp, characteristic Eu<sup>3+</sup> f-f transitions, which enables excitation-dependent luminescence color tuning. Their emission profiles and quantum yields are found to be exquisitely adjusted by the distinct coordination environments of Sn<sup>4+</sup> centers. Notably, Sn<sub>2</sub>EuL<sub>2</sub>-R/S demonstrates CPL activity in both near-UV (|<em>g</em><sub>lum</sub>| = 1.7 × 10<sup>−3</sup>) and visible (|<em>g</em><sub>lum</sub>| = 3.1 × 10<sup>−2</sup>) regions. This work not only reports the first instance of dual-wavelength CPL in a lanthanide/tin oxo complex but also establishes a robust design strategy for fabricating color-tunable chiral photonic materials.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 12","pages":"Article 100759"},"PeriodicalIF":10.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.cjsc.2025.100734
Hong-Zhao Zan , Hai-Xin Zhao , Xi-Gui Gao , Xiao-Zhong Wang , Yun-Zhi Zhu , Guo-Kun Li , Xu-Yang Yao , Chen Li , Xiang-Wen Kong , Xiao-Wu Lei
Stimuli-responsive luminescent switching materials with multifunctional properties are highly essential for advanced photonic applications, yet achieving such capabilities in halide perovskites continues to pose a significant challenge. In this work, we explore a new water-stimuli-responsive zero-dimensional (0D) Sb-based halide of [PhPz]2SbCl7·2H2O (PhPz = phenylpiperazine), which consists of isolated [SbCl6]3− octahedra in [PhPz]2+ cationic matrix with guest H2O molecules. Under UV excitation, [PhPz]2SbCl7·2H2O emits intense broadband red light with maximum emission at 645 nm, and combined optical characterization and theoretical calculations confirm that this luminescence originates from self-trapped excitons (STEs). Interestingly, the free water molecules can reversibly leave and entry the crystal lattice during heating-cooling cycles accompanied by the formation of dehydrated phase, which displays strong yellow emission with maximum peak at 580 nm. Therefore, reversible luminescent switching between red and yellow emission is achieved through controllable removal and adsorption process of guest H2O. By virtue of this reversible thermochromic switching, this halide can be used to detect the trace amount of water in various organic solvents and humidity of moist air. In addition, such switchable dual emission further realizes application in anti-counterfeiting and information encryption-decryption. This work deepens the understanding of structure-property relationships and expands the application range of 0D metal halides.
{"title":"Thermochromic luminescence in low-dimensional antimony halide for detection of trace amount of water and anti-counterfeiting","authors":"Hong-Zhao Zan , Hai-Xin Zhao , Xi-Gui Gao , Xiao-Zhong Wang , Yun-Zhi Zhu , Guo-Kun Li , Xu-Yang Yao , Chen Li , Xiang-Wen Kong , Xiao-Wu Lei","doi":"10.1016/j.cjsc.2025.100734","DOIUrl":"10.1016/j.cjsc.2025.100734","url":null,"abstract":"<div><div>Stimuli-responsive luminescent switching materials with multifunctional properties are highly essential for advanced photonic applications, yet achieving such capabilities in halide perovskites continues to pose a significant challenge. In this work, we explore a new water-stimuli-responsive zero-dimensional (0D) Sb-based halide of [PhPz]<sub>2</sub>SbCl<sub>7</sub>·2H<sub>2</sub>O (PhPz = phenylpiperazine), which consists of isolated [SbCl<sub>6</sub>]<sup>3<sup>−</sup></sup> octahedra in [PhPz]<sup>2+</sup> cationic matrix with guest H<sub>2</sub>O molecules. Under UV excitation, [PhPz]<sub>2</sub>SbCl<sub>7</sub>·2H<sub>2</sub>O emits intense broadband red light with maximum emission at 645 nm, and combined optical characterization and theoretical calculations confirm that this luminescence originates from self-trapped excitons (STEs). Interestingly, the free water molecules can reversibly leave and entry the crystal lattice during heating-cooling cycles accompanied by the formation of dehydrated phase, which displays strong yellow emission with maximum peak at 580 nm. Therefore, reversible luminescent switching between red and yellow emission is achieved through controllable removal and adsorption process of guest H<sub>2</sub>O. By virtue of this reversible thermochromic switching, this halide can be used to detect the trace amount of water in various organic solvents and humidity of moist air. In addition, such switchable dual emission further realizes application in anti-counterfeiting and information encryption-decryption. This work deepens the understanding of structure-property relationships and expands the application range of 0D metal halides.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 12","pages":"Article 100734"},"PeriodicalIF":10.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.cjsc.2025.100747
Sumiya Akter Dristy , Md Ahasan Habib , Mehedi Hasan Joni, Md Najibullah, Rutuja Mandavkar, Shusen Lin, Jihoon Lee
The development of robust, cost-effective and high-performance electrocatalysts is essential for industrial-scale green hydrogen production under high-current operating conditions (> 500 mA/cm2) to ensure both high output and economic efficiency. Herein, a binder-free bimetallic vanadium-nickel-boride-phosphide (VNiBP) spherical electrocatalyst (SE) is synthesized via a simple hydrothermal method, followed by post-annealing. The VNiBP catalyst exhibits low overpotentials of 91 mV for the hydrogen evolution reaction (HER) and 270 mV for the oxygen evolution reaction (OER) at 100 mA/cm2 in 1 M KOH with stable operation over 150 h, surpassing most of the state-of-the-art electrocatalysts. The bifunctional VNiBP (–, +) exhibits a low turnover voltage of 1.57 V at 100 mA/cm2 and outperforms the Pt/C||RuO2 benchmark system up to 2000 mA/cm2 high-current density. The Pt/C||VNiBP hybrid configuration shows a low 2-E cell voltage of 2.55 V at 2000 mA/cm2 under industrially relevant conditions (6 M KOH, 60 °C). Notably, the VNiBP demonstrates exceptional long-term stability, maintaining continuous operation for over 6 days in both 1 M and 6 M KOH at 1000 mA/cm2. The outstanding overall water splitting (OWS) performance can be attributed to the synergistic combination of rapid intermediate formation, optimized adsorption/desorption kinetics, high electrochemical surface area and low charge transfer resistance offered by favorable composition and spherical morphology.
在高电流操作条件下（500毫安/平方厘米）实现工业规模的绿色制氢，确保高产出和经济效益，开发强大、经济高效的电催化剂至关重要。本文采用简单的水热法合成了无粘结剂的双金属钒镍硼化磷化物（VNiBP）球形电催化剂（SE），并进行了后退火。VNiBP催化剂在1 M KOH条件下，在100 mA/cm2条件下，析氢反应（HER）的过电位为91 mV，析氧反应（OER）的过电位为270 mV，稳定运行150 h以上，超过了大多数最先进的电催化剂。双功能VNiBP（-, +）在100 mA/cm2时具有1.57 V的低转换电压，并且在高达2000 mA/cm2的高电流密度下优于Pt/C||RuO2基准系统。Pt/C||VNiBP混合结构在工业相关条件下（6 M KOH, 60°C），在2000 mA/cm2下具有2.55 V的低2-E电池电压。值得注意的是，VNiBP表现出优异的长期稳定性，在1 M和6 M KOH下，在1000 mA/cm2下连续运行超过6天。优异的整体水分解（OWS）性能可归因于快速中间体形成、优化的吸附/解吸动力学、良好的组成和球形形貌提供的高电化学表面积和低电荷转移阻力的协同组合。
{"title":"Binder-free bimetallic vanadium-nickel-boride-phosphide spherical structure for highly efficient and stable industrial-level water splitting","authors":"Sumiya Akter Dristy , Md Ahasan Habib , Mehedi Hasan Joni, Md Najibullah, Rutuja Mandavkar, Shusen Lin, Jihoon Lee","doi":"10.1016/j.cjsc.2025.100747","DOIUrl":"10.1016/j.cjsc.2025.100747","url":null,"abstract":"<div><div>The development of robust, cost-effective and high-performance electrocatalysts is essential for industrial-scale green hydrogen production under high-current operating conditions (> 500 mA/cm<sup>2</sup>) to ensure both high output and economic efficiency. Herein, a binder-free bimetallic vanadium-nickel-boride-phosphide (VNiBP) spherical electrocatalyst (SE) is synthesized via a simple hydrothermal method, followed by post-annealing. The VNiBP catalyst exhibits low overpotentials of 91 mV for the hydrogen evolution reaction (HER) and 270 mV for the oxygen evolution reaction (OER) at 100 mA/cm<sup>2</sup> in 1 M KOH with stable operation over 150 h, surpassing most of the state-of-the-art electrocatalysts. The bifunctional VNiBP (–, +) exhibits a low turnover voltage of 1.57 V at 100 mA/cm<sup>2</sup> and outperforms the Pt/C||RuO<sub>2</sub> benchmark system up to 2000 mA/cm<sup>2</sup> high-current density. The Pt/C||VNiBP hybrid configuration shows a low 2-E cell voltage of 2.55 V at 2000 mA/cm<sup>2</sup> under industrially relevant conditions (6 M KOH, 60 °C). Notably, the VNiBP demonstrates exceptional long-term stability, maintaining continuous operation for over 6 days in both 1 M and 6 M KOH at 1000 mA/cm<sup>2</sup>. The outstanding overall water splitting (OWS) performance can be attributed to the synergistic combination of rapid intermediate formation, optimized adsorption/desorption kinetics, high electrochemical surface area and low charge transfer resistance offered by favorable composition and spherical morphology.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 12","pages":"Article 100747"},"PeriodicalIF":10.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-12-01DOI: 10.1016/j.cjsc.2025.100751
Fozia Nazir , Syeda Sundas Musawar , Ashfaq Ahmad Khan , Bilal Akram , Farid Ahmed
Since their discovery by Hugo Schiff in 1864, Schiff bases and their metal complexes have gained recognition for their catalytic and biological properties. These compounds exhibit diverse functionalities, serving as catalysts in synthetic processes and displaying notable biological activities such as antifungal, antibacterial, anti-malarial, and antiviral effects. In various applications, Schiff bases serve as versatile tools, particularly in sensing applications. Through coordination with various metal ions, they form stable complexes. They are utilized as fluorescent turn-on/turn-off sensors for detecting a wide range of analytes. The coordination ability makes them valuable as chemosensor for detecting environmentally and biologically important analytes. This review provides a thorough overview of Schiff base chemosensors designed for the detection of environmental and biological significance including metal cations, anions, and neutral analytes. It is structured into four focused sections. The first section addresses the use of Schiff base chemosensor for the selective detection of various metal cations, including Ca2+, Al3+, Cr3+, Mn2+, Fe3+, Ni2+, Cu2+, Zn2+, Cd2+, Hg2+, and Pb2+; The second section examines the application of fluorescent Schiff base sensors in detecting diverse anions such as F−, CN−, I−, and HSO4−; The third section investigates the use of Schiff base fluorescent probes for accurate pH detection and determination; and the fourth section explores the utilization of Schiff base sensors for detecting environmentally and biologically important neutral analytes, including insecticides, pesticides, and others. Additionally, the Schiff base chemosensors for metal cations and anions section are concluded with a table, summarizing the reviewed fluorescent Schiff base sensors for enhanced clarity.
{"title":"Chromogenic and fluorogenic Schiff base sensors","authors":"Fozia Nazir , Syeda Sundas Musawar , Ashfaq Ahmad Khan , Bilal Akram , Farid Ahmed","doi":"10.1016/j.cjsc.2025.100751","DOIUrl":"10.1016/j.cjsc.2025.100751","url":null,"abstract":"<div><div>Since their discovery by Hugo Schiff in 1864, Schiff bases and their metal complexes have gained recognition for their catalytic and biological properties. These compounds exhibit diverse functionalities, serving as catalysts in synthetic processes and displaying notable biological activities such as antifungal, antibacterial, anti-malarial, and antiviral effects. In various applications, Schiff bases serve as versatile tools, particularly in sensing applications. Through coordination with various metal ions, they form stable complexes. They are utilized as fluorescent turn-on/turn-off sensors for detecting a wide range of analytes. The coordination ability makes them valuable as chemosensor for detecting environmentally and biologically important analytes. This review provides a thorough overview of Schiff base chemosensors designed for the detection of environmental and biological significance including metal cations, anions, and neutral analytes. It is structured into four focused sections. The first section addresses the use of Schiff base chemosensor for the selective detection of various metal cations, including Ca<sup>2+</sup>, Al<sup>3+</sup>, Cr<sup>3+</sup>, Mn<sup>2+</sup>, Fe<sup>3+</sup>, Ni<sup>2+</sup>, Cu<sup>2+</sup>, Zn<sup>2+</sup>, Cd<sup>2+</sup>, Hg<sup>2+</sup>, and Pb<sup>2+</sup>; The second section examines the application of fluorescent Schiff base sensors in detecting diverse anions such as F<sup>−</sup>, CN<sup>−</sup>, I<sup>−</sup>, and HSO<sub>4</sub><sup>−</sup>; The third section investigates the use of Schiff base fluorescent probes for accurate pH detection and determination; and the fourth section explores the utilization of Schiff base sensors for detecting environmentally and biologically important neutral analytes, including insecticides, pesticides, and others. Additionally, the Schiff base chemosensors for metal cations and anions section are concluded with a table, summarizing the reviewed fluorescent Schiff base sensors for enhanced clarity.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 12","pages":"Article 100751"},"PeriodicalIF":10.3,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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