ChemPlusChem最新文献

From Green to Brown: Characterization of the Fast Alteration of Modern Greenish Enamels in Glass Windows. 从绿色到棕色：现代绿釉在玻璃窗上快速变化的表征。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-07-03 DOI: 10.1002/cplu.202500205

Teresa Palomar, David G Calatayud, Mohamed Oujja, Laura Maestro-Guijarro, Mario Aparicio, Jadra Mosa, Bettina Koppermann, Léonie Seliger

{"title":"From Green to Brown: Characterization of the Fast Alteration of Modern Greenish Enamels in Glass Windows.","authors":"Teresa Palomar, David G Calatayud, Mohamed Oujja, Laura Maestro-Guijarro, Mario Aparicio, Jadra Mosa, Bettina Koppermann, Léonie Seliger","doi":"10.1002/cplu.202500205","DOIUrl":"https://doi.org/10.1002/cplu.202500205","url":null,"abstract":"In 2009-2014, new glass panels were produced by the Stained-Glass Studio of Canterbury Cathedral (UK) and installed in St Peter's Church (Little Barrington, Burford), St Lawrence's Church (Mereworth, Kent), and Canterbury Cathedral. After a few years, some spots and stains have appeared on the greenish areas of the panels. The common factor was that the panels were produced using the same green enamel. The present work reports on the studies of the observed alterations on green enamels to propose possible degradation mechanisms. These studies are based on using different analytical techniques such as optical microscopy (OM), scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDS), inductively coupled plasma mass spectrometry (ICP-MS), laser-induced breakdown spectroscopy (LIBS), X-ray diffraction (XRD), µ-Raman spectroscopy and UV-Vis-IR spectroscopy. The characterization of the fragments from the original panels showed that a brown layer of dark lead compounds was formed on the green enamel. The alteration occurred in a 3-step alteration mechanism divided into Pb2+ lixiviation from the enamel, formation of hydrocerussite (2PbCO3·Pb(OH)2) and transformation into scrutinyite (α-PbO2) and plattnerite (β-PbO2).","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500205"},"PeriodicalIF":3.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144558621","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}

引用次数: 0

A Base-Mediated Rearrangement of the Benzylic 1,5-Hexadipyridynyl Moiety. 苯基1,5-己二吡啶基部分的碱基介导重排。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-07-03 DOI: 10.1002/cplu.202500252

Wouter A Remmerswaal, Thai-Tony Nguyen, Han Zijan, Fedor Krasovski Slobodian, Ruisheng Xiong, Vadim Kessler, Zhijian Xu, Weiliang Zhu, Mate Erdelyi

引用次数: 0

Progress in precision synthesis of supramolecular copolymers. 超分子共聚物精密合成研究进展。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-07-02 DOI: 10.1002/cplu.202500409

Krishnan Kartha Kalathil, Sudheeshma Satheesan, Anjali K Gopalakrishnan, Deepak D Prabhu

{"title":"Progress in precision synthesis of supramolecular copolymers.","authors":"Krishnan Kartha Kalathil, Sudheeshma Satheesan, Anjali K Gopalakrishnan, Deepak D Prabhu","doi":"10.1002/cplu.202500409","DOIUrl":"https://doi.org/10.1002/cplu.202500409","url":null,"abstract":"Supramolecular copolymerization has emerged as a promising tool to organize multiple components in solution. Theoretically, mixing more than one component in solution can lead to different architectures, such as narcissistic, social, blocky, and random. However, controlling the formation of a specific copolymer structure during supramolecular copolymerization remains elusive, owing to the dynamic and reversible nature of non-covalent interactions between the constituent monomers, which facilitate rapid monomer exchange and reorganization in solution. Recent breakthroughs in the synthesis of supramolecular polymers have provided detailed mechanistic insights into supramolecular polymerization, enabling precise control over the size and morphology of the resulting assemblies. Leveraging these mechanistic insights, several attempts have been made to control supramolecular copolymerization. Rational molecular design strategies have been employed to achieve the exclusive synthesis of social and narcissistic copolymers. Conversely, tuning the subtle interplay between homo- and hetero-recognition of structurally matched monomers enabled the selective formation of block copolymers. In this review, we provide an overview of rational design principles and synthetic strategies enabling the precision synthesis of supramolecular copolymers.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500409"},"PeriodicalIF":3.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551510","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}

引用次数: 0

The Cross-Infectious Degradation of Plasticised Poly (Vinyl Chloride) and Cellulosic Materials. 增塑化聚氯乙烯和纤维素材料的交叉感染降解。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-07-02 DOI: 10.1002/cplu.202400694

Simona Klempová, Petra Urbanová, Lucia Mencáková, Katarína Kučíková, Katarína Vizárová

{"title":"The Cross-Infectious Degradation of Plasticised Poly (Vinyl Chloride) and Cellulosic Materials.","authors":"Simona Klempová, Petra Urbanová, Lucia Mencáková, Katarína Kučíková, Katarína Vizárová","doi":"10.1002/cplu.202400694","DOIUrl":"https://doi.org/10.1002/cplu.202400694","url":null,"abstract":"Plasticised poly (vinyl chloride) (PVC-P), widely used in the 20th century, poses significant risks to numerous artefacts preserved in cultural heritage institutions due to the release of hydrochloric acid (HCl) and plasticisers. While previous studies have examined the impact of PVC-P emissions on cellulose, this study is the first to investigate cross-infectious degradation in systems where PVC-P is in direct contact with cellulosic materials. We examined the interaction between PVC-P and two types of cellulosic materials - pure cellulose paper (Whatman paper) and lignin-containing acidic paper (NOVO paper) - under accelerated ageing at 90°C. In PVC-P, direct contact with the cellulosic material led to the migration of both the plasticiser and the thermal stabiliser. Dehydrochlorination of PVC-P under these conditions generated enough hydrogen chloride (HCl) to accelerate cellulose depolymerisation, followed by a faster decline in surface pH. This study shows that cellulosic materials can destabilise PVC-P while also undergoing degradation as a result of this interaction. In the case of more heterogeneous cellulosic materials, this interaction can lead to uneven degradation of the PVC-P.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202400694"},"PeriodicalIF":3.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144537557","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}

引用次数: 0

Structural and Conformational Analysis and Biological Activity of Adamantyl-Based Acyl-Thioureas Bearing Trihalophenyl Substituents. 含三卤苯基取代基金刚烷基酰基硫脲的结构构象分析及生物活性。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-06-30 DOI: 10.1002/cplu.202500311

Diana L Nossa González, Jovanny A Gómez Castaño, Aamer Saeed, Gustavo A Echeverria, Oscar E Piro, Yanina A Lamberti, Mauricio Federico Erben

{"title":"Structural and Conformational Analysis and Biological Activity of Adamantyl-Based Acyl-Thioureas Bearing Trihalophenyl Substituents.","authors":"Diana L Nossa González, Jovanny A Gómez Castaño, Aamer Saeed, Gustavo A Echeverria, Oscar E Piro, Yanina A Lamberti, Mauricio Federico Erben","doi":"10.1002/cplu.202500311","DOIUrl":"https://doi.org/10.1002/cplu.202500311","url":null,"abstract":"A series of six closely related acyl thiourea derivatives featuring adamantyl/noradamantyl groups at the 1-acyl position and 3-trihalophenyl substituents at the thiourea moiety were comprehensively characterized through spectroscopic, computational, and X-ray crystallographic methods. Vibrational spectroscopy (IR and Raman) revealed significant redshifts in the N-H and C=O stretching bands, confirming the presence of strong intramolecular N-H···O=C hydrogen bonds. Conformational analysis using molecular mechanics and DFT calculations identified several stable conformers, with the most stable adopting an S-shaped geometry where the C=O and C=S bonds are oppositely oriented - a configuration experimentally validated by single-crystal X-ray diffraction. In the solid state, crystal packing is governed by hydrogen-bonding interactions (H···O=C and H···S=C) facilitated by the acyl-thiourea core. The bulky adamantyl/noradamantyl groups impose steric constraints, whereas the halogenated phenyl rings promote stabilizing π-stacking and halogen interactions. Biological evaluation demonstrated limited antimicrobial activity against E. coli, P. aeruginosa, B. cenocepacia, and S. aureus, but moderate cytotoxicity against A549, 16HBE14o-, and HaCaT cell lines (IC50 = 25-100 μM).","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500311"},"PeriodicalIF":3.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144525692","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}

引用次数: 0

Deposition of Tin Catalysts from Thiolated Precursor Organic Solutions for CO2 Reduction to Formate: A Potential-Dependent Mechanism Study. 硫代前驱体有机溶液沉积锡催化剂用于CO2还原为甲酸盐：电位依赖机理研究。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-06-29 DOI: 10.1002/cplu.202500208

Yaron Cohen, Sumesh Sadhujan, Sonal Rajput, Yakov Shitrit, Olga Iliashevsky

{"title":"Deposition of Tin Catalysts from Thiolated Precursor Organic Solutions for CO2 Reduction to Formate: A Potential-Dependent Mechanism Study.","authors":"Yaron Cohen, Sumesh Sadhujan, Sonal Rajput, Yakov Shitrit, Olga Iliashevsky","doi":"10.1002/cplu.202500208","DOIUrl":"https://doi.org/10.1002/cplu.202500208","url":null,"abstract":"The production of efficient catalysts is mandatory to attain superior catalytic performance. Once the catalyst deposition mechanism is clear, one can define the optimal physical and chemical conditions of the deposition process, such as electrolyte composition, reduction potential, current operation mode, result chemical composition of the catalyst, its structure and morphology. Here, we investigate the electrodeposition mechanism of tin catalysts in dimethyformamide of a thiolated tin complex under potential control for CO2 reduction to formate. First, a new synthesis route is presented for a tin thiolate precursor, Bis(1,2-ethanedihiolate)Sn(IV). Second, a potential-controlled deposition process of tin from dimethylformamide solutions of this precursor is discussed, with the intention to deposition of tin catalysts on acid-sensitive substrates, such as carbon-composed gas-diffusion-layers. We expose with scan-rate cyclic-voltammetry, scan-rate mass-potential and chronoamperometry measurements irregular current-potential and mass change phenomena along electrodeposition, which reflect a complicated potential-dependent mechanism composed of redox and chemical reactions. Disproportionation and comproportionation reactions of tin are indicated by the holistic picture of the potential and time -dependent mass measurements and complementary structure and morphology analysis and are suggested to have an important role in the deposition mechanism of tin. The complex mechanism is untied and the deposition conditions are defined accordingly.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500208"},"PeriodicalIF":3.0,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144525691","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}

引用次数: 0

A Mild Recyclable MOF-based Brominating Agent Br2@CAU-10-PDC with HBr Trapping Function. 具有HBr捕集功能的温和可回收mof基溴化剂Br2@CAU-10-PDC

IF 3 4区化学

ChemPlusChem Pub Date : 2025-06-27 DOI: 10.1002/cplu.202500287

Evgeniy A Kvetkin, Yelizaveta A Morkhova, Andrey V Sokolov

{"title":"A Mild Recyclable MOF-based Brominating Agent Br2@CAU-10-PDC with HBr Trapping Function.","authors":"Evgeniy A Kvetkin, Yelizaveta A Morkhova, Andrey V Sokolov","doi":"10.1002/cplu.202500287","DOIUrl":"https://doi.org/10.1002/cplu.202500287","url":null,"abstract":"A wide range of brominating agents and heterogeneous brominating systems indicates a demand in the field of organic compounds bromination. A new mild and recyclable metal-organic framework (MOF) - based brominating agent, Br2@CAU-10-PDC (CAU = Christian-Albrechts-University), has been synthesized and successfully applied to the bromination of activated aromatics, such as phenols, amines and amides. Infrared and Raman spectroscopy, as well as powder X-ray diffraction were used to characterize the obtained composite. Rietveld refinement of the composite structure has also been performed, as a result, the positions of bromine species associated with pyridine nitrogen and specific interactions with each other has been determined. The agent synthesis and recycling steps are straightforward. The recyclability of the agent is achieved due to the reversible nature of the linker bonding with Br2 and HBr. This unique feature makes the composite the first, to our knowledge, brominating agent that readily traps HBr without losing its properties. The presented composite can become a valuable addition to the group of mild, reusable and multifunctional brominating agents.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500287"},"PeriodicalIF":3.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144504289","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}

引用次数: 0

Hydrogen Rich Syngas Production over Ni Catalysts on Mg-stabilized Zirconia through Partial Oxidation of Methane: The Role of Magnesium as Stabilizer for Support & Active Sites. 镁稳定氧化锆催化甲烷部分氧化制富氢合成气：镁作为载体和活性位点稳定剂的作用

IF 3 4区化学

ChemPlusChem Pub Date : 2025-06-27 DOI: 10.1002/cplu.202500228

Rawesh Kumar, Dharmesh M Vadodariya, Norah Alwadai, Abdulaziz A M Abahussain, Maher M Alrashed, Mohammed Al-Yusufi, Salwa B Alreshaidan, Naif Alarifi, Ahmed S Al-Fatesh

{"title":"Hydrogen Rich Syngas Production over Ni Catalysts on Mg-stabilized Zirconia through Partial Oxidation of Methane: The Role of Magnesium as Stabilizer for Support & Active Sites.","authors":"Rawesh Kumar, Dharmesh M Vadodariya, Norah Alwadai, Abdulaziz A M Abahussain, Maher M Alrashed, Mohammed Al-Yusufi, Salwa B Alreshaidan, Naif Alarifi, Ahmed S Al-Fatesh","doi":"10.1002/cplu.202500228","DOIUrl":"https://doi.org/10.1002/cplu.202500228","url":null,"abstract":"Catalytic conversion of methane in the presence of O2 into hydrogen-rich syngas is known as partial oxidation of methane (POM). Achieving good H2 yield with H2/CO ~3 by using a low amount of Ni-based active sites at a low reaction temperature (~600 °C) through POM remains challenging. Herein, magnesia-stabilized zirconia (MSZ) is prepared by co-precipitation method by varying the amount of Mg from 8-14 mol%. Ni supported over MSZ catalysts are investigated for POM reaction and characterized by diffraction techniques, spectroscopic techniques, surface area-porosity, temperature-programmed reduction-oxidation, and thermogravimetry. The incorporation of magnesium stabilizes both the support and the active sites. Under the oxidizing environment, the strong interaction of NiO surmounts over moderate interaction. Upon incorporation of 14 mol% Mg into ZrO2 (14MSZ), the catalyst attains stable support and the largest surface area where most of the active sites are formed by \"NiO under strong interaction\". 5 wt % Ni dispersed over 14MSZ acquires the highest H2 yield (37%) and H2/CO ~3 at 600 °C and 85% H2 yield with ~2 H2/CO at 750oC. Over 5Ni/14MSZ catalyst, the high reaction temperature restricts indirect pathway of POM by limiting the CO2 yield and ensures high hydrogen yield through direct pathways of POM.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500228"},"PeriodicalIF":3.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511272","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}

引用次数: 0

Addressing the aggregation phenomenon in a model AIE coupled ESIPT active probe: correlating aggregation states to their photodynamics. 解决AIE耦合ESIPT有源探针模型中的聚集现象：将聚集状态与其光动力学相关联。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-06-24 DOI: 10.1002/cplu.202500330

Arghyadeep Bhattacharyya, Manoj Das

{"title":"Addressing the aggregation phenomenon in a model AIE coupled ESIPT active probe: correlating aggregation states to their photodynamics.","authors":"Arghyadeep Bhattacharyya, Manoj Das","doi":"10.1002/cplu.202500330","DOIUrl":"https://doi.org/10.1002/cplu.202500330","url":null,"abstract":"In the current work, we report a comprehensive study on the spectrodynamic behaviour of 4-dimethylamino-2'-hydroxychalcone (DMHC) in crystalline state and in aggregated state in water (pH 7.0) by the aid of steady-state and time-resolved spectroscopy. Our studies revealed that the ESIPT process is slow in the crystalline state (τESIPT=3.0 ns) with the emission dominated by ESIPT from 600 nm onwards, with little contribution (550-570 nm) from the local emission with lower lifetime of emission (τlocal-emission=140 ps). Spectrodynamic studies in the aqueous solution of DMHC shows the emission lifetime values are both lowered in the aqueous solution with emission from aggregates and the solvated DMHC molecules in aqueous solution (τlocal-emission =90 ps and τESIPT=35 ps and 1.4 ns). We concluded that DMHC shows ESIPT emission from the J-aggregated forms, whereas in aqueous solutions, the ESIPT emission in water occurs from the H-aggregates. The current report holds importance owing to the detailed spectrodynamic dissection of the aggregation phenomenon of a model AIE coupled ESIPT active molecule and delineates how the spectrodynamic behaviour of each aggregated form differs in terms of the nature of the aggregates formed (J- and H-aggregates), which shall aid in the understanding and construction of tailor-made AIE active molecules.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500330"},"PeriodicalIF":3.0,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144473464","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}

引用次数: 0

Fluorescent Detection of Salicylaldehyde Based on Tb-Based Coordination Polymer. 基于tb基配位聚合物的水杨醛荧光检测。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-06-19 DOI: 10.1002/cplu.202500179

Shangzai Wu, Xiaolong Gong, Guojian Ren, Linglong Yi, Qi Zhou, Qinhe Pan

引用次数: 0