ChemPlusChem最新文献_第8页

Facile and Rapid Synthesis of Ultra-Low-Loading Pt-Based Catalyst Boosting Electrocatalytic Hydrogen Production. 简易快速合成超低负荷pt基催化剂促进电催化制氢。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-28 DOI: 10.1002/cplu.202500057

Wenjie Zhai, Jiayi Wang, Ruili Liang, Xiaoli Fan, Xuewei Tao, Jianping He, Yachao Jin, Mingdao Zhang, Li Song

{"title":"Facile and Rapid Synthesis of Ultra-Low-Loading Pt-Based Catalyst Boosting Electrocatalytic Hydrogen Production.","authors":"Wenjie Zhai, Jiayi Wang, Ruili Liang, Xiaoli Fan, Xuewei Tao, Jianping He, Yachao Jin, Mingdao Zhang, Li Song","doi":"10.1002/cplu.202500057","DOIUrl":"10.1002/cplu.202500057","url":null,"abstract":"The development of a low-cost hydrogen evolution reaction (HER) catalyst is crucial for the implementation of hydrogen production via water electrolysis. Herein, a facile and rapid electrodeposition method to synthesize an ultra-low-loading platinum-based catalyst in a short time of 120 s without any other chemical additive is reported. A functionalized nitrogen-doped carbon nanotube (F-N-CNT) is utilized as a carbon support to controllably and effectively anchor the Pt species. With partially oxidized and unzipped, the surface of F-N-CNT is characterized with zig-zag graphene-like nanodomains, which provide enriched deposition sites for Pt species and act as a buffer preventing the agglomeration and overloading of the Pt. Due to rational design of the interfacial chemical environment, the optimized Pt/F-N-CNTs catalyst possesses an ultra-low loading of 1.37 wt% but delivers a prominent HER activity superior to commercial 20 wt% Pt/C. Therefore, this work provides a novel approach to preparing the Pt-based catalyst with outstanding activity and rational loading.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500057"},"PeriodicalIF":3.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143727290","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

Unlocking New Porphyrin Aminoacid Bioconjugates with a Pd-Catalyzed Carboxamide Synthesis. 用pd催化合成新的卟啉氨基酸生物偶联物。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-27 DOI: 10.1002/cplu.202500193

Péter Szuroczki, Gábor Mikle, Rafael T Aroso, Zoe A Arnaut, Sara M A Pinto, Rui M B Carrilho, Attila Bényei, László Kollár, Mariette M Pereira

{"title":"Unlocking New Porphyrin Aminoacid Bioconjugates with a Pd-Catalyzed Carboxamide Synthesis.","authors":"Péter Szuroczki, Gábor Mikle, Rafael T Aroso, Zoe A Arnaut, Sara M A Pinto, Rui M B Carrilho, Attila Bényei, László Kollár, Mariette M Pereira","doi":"10.1002/cplu.202500193","DOIUrl":"10.1002/cplu.202500193","url":null,"abstract":"This study introduces a novel approach for the one-step preparation of carboxamide porphyrin-amino acid bioconjugates via palladium/xantphos-catalyzed aminocarbonylation of 5,15-dibromo-10,20-diphenylporphyrin and 5,10,15,20-tetrakis(4-bromophenyl)porphyrin, under relatively mild conditions (70-100 °C, 1 atm CO), using natural amino acid methyl ester derivatives as N-nucleophiles. This optimized methodology leads to different families of amphiphilic porphyrin bioconjugates containing between one and four amino acids through carboxamide bonds, with isolated yields up to 71%. The resulting porphyrin-amino acid conjugates incorporate glycine, alanine, phenylalanine, and valine, offering tunable molecular weights and functional properties tailored to diverse applications. Comprehensive characterization using proton nuclear magnetic resonance (1H-NMR), UV-Visible absorption, fluorescence spectroscopy, and singlet oxygen quantum yields highlights the potential of these conjugates as photosensitizers for photodynamic therapy and microbial inactivation. To the best of one's knowledge, this is the first application of a one-step aminocarbonylation reaction for porphyrin functionalization, providing a more straightforward approach compared with traditional multistep methods.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500193"},"PeriodicalIF":3.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143717684","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

pH and Medium Polarity-Induced Self-Assembly of Fmoc-Tryptophan into Multiple Superstructures: An Experimental and Theoretical Investigations. pH和中极性诱导fmoc -色氨酸自组装成多个超结构：实验和理论研究。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-26 DOI: 10.1002/cplu.202500036

Suman Nayak, Nanjundan Raghul, Abhijit Saha, Rabindranath Lo, Priyadip Das

{"title":"pH and Medium Polarity-Induced Self-Assembly of Fmoc-Tryptophan into Multiple Superstructures: An Experimental and Theoretical Investigations.","authors":"Suman Nayak, Nanjundan Raghul, Abhijit Saha, Rabindranath Lo, Priyadip Das","doi":"10.1002/cplu.202500036","DOIUrl":"10.1002/cplu.202500036","url":null,"abstract":"Self-assembly of functionalized molecular building blocks is an effective and resource-saving bottom-up technique to generate multiple superstructures with various functionality and morphologies. The nature of the molecule and the factors controlling the overall self-assembly process are extremely vital in fundamental aspects of self-assembly, which deliver insights into the fabrication of multiple assemblies with specific functionality. The self-assembly of suitably functionalized amino acids leads to the formation of diverse structures with distinct properties, making them ideal bio-organic scaffolds for various applications. The present study reports, the pH and solvent polarity-induced self-assembly of 9-fluorenylmethoxycarbonyl (Fmoc)-Tryptophan into various self-assembled superstructures with morphological individualities, explore the plausible pathway of morphological transformation of Fmoc-Trp into multiple superstructures having a wide range of well-defined morphologies, including spheres, hollow spheres, nanoflowers, nanosheets, nanorods, and cube-like structures, as characterized through conventional microscopic techniques. Detailed UV-vis, fluorescence, powder X-ray diffraction analysis, and Fourier transform infrared analyses reveal significant insights into the intermolecular interactions, which trigger the overall self-assembly process. The computational studies, including full geometry optimization and molecular dynamics simulations, are conducted to investigate the aggregation properties of modified amino acids (Fmoc-Trp). These studies highlight the crucial role of π-π stacking and hydrogen bonding in tuning the overall self-assembly with morphological variation.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500036"},"PeriodicalIF":3.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707874","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

Multifactor Multilevel Optimization of MOF Derivatives for Promoting Catalyst Fabrication. 促进催化剂制备的mofs衍生物的多因素多级优化。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-26 DOI: 10.1002/cplu.202500110

Peiwei Zhao, Yuqing Zhang, Lele Gao, Yu Wang, Yimin Sun, Shizhong Luo, Ruirui Yun

引用次数: 0

Kinetic Studies Reveal that the Secondary Station Impacts the Rate of Motion of Cyclobis(Paraquat-p-Phenylene) in Out-of-Equilibrium [2]Rotaxanes. 动力学研究表明，在非平衡态[2]轮烷中，次级站对环草枯-对苯的运动速率有影响。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-26 DOI: 10.1002/cplu.202500154

Mathias S Neumann, Sofie K Jensen, Rikke Frederiksen, Sissel S Andersen, Kasper M Beck, Jan O Jeppesen

{"title":"Kinetic Studies Reveal that the Secondary Station Impacts the Rate of Motion of Cyclobis(Paraquat-p-Phenylene) in Out-of-Equilibrium [2]Rotaxanes.","authors":"Mathias S Neumann, Sofie K Jensen, Rikke Frederiksen, Sissel S Andersen, Kasper M Beck, Jan O Jeppesen","doi":"10.1002/cplu.202500154","DOIUrl":"10.1002/cplu.202500154","url":null,"abstract":"Control of movement in artificial molecular machines relies on the formation of out-of-equilibrium states that can subsequently interconvert to their ground states. However, a detailed description of molecular machines that are out of equilibrium is a challenge because they are often too short-lived to be characterized. Herein, the synthesis of two cyclobis(paraquat-p-phenylene) [2]rotaxanes that incorporate a redox-active monopyrrolotetrathiafulvalene unit as the primary station and either a hydroquinone or a xylyl moiety as the secondary station is described. It is shown that the bistable [2]rotaxanes can be pushed out of equilibrium by an oxidation/reduction cycle and since a steric barrier is located between the two stations, the out-of-equilibrium states of the [2]rotaxanes can be physically isolated as solids. This allows to make detailed spectroscopic and electrochemical investigations of the [2]rotaxanes in both the di-oxidized and un-oxidized states. The outcome of the studies shows that the replacement of the secondary hydroquinone station with a xylyl station has no impact on the thermodynamic properties but has a significant effect on the kinetic properties of the [2]rotaxanes illustrating that the nature of the secondary station can be used to control the speed of [2]rotaxane-based molecular machines.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e2500154"},"PeriodicalIF":3.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707855","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

Open-Chain Tetrapyrroles Meet Metal Ions in the Functional Molecular Material Science. 开链四吡咯与金属离子在功能分子材料科学中的应用。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-24 DOI: 10.1002/cplu.202500090

Aninda Ghosh, Sandipa Bhandari, Hiroyuki Furuta, Masatoshi Ishida

引用次数: 0

Fabrication And Assessment Of A Ternary Composite Of Cobalt Oxide, Cadmium Sulphide And Carbon Nanotube As A Disposable Sensor For The Sensitive Monitoring Of Tamsulosin In Serum. 氧化钴、硫化镉和碳纳米管三元复合材料一次性传感器用于血清坦索罗辛敏感监测的制备及评价。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-20 DOI: 10.1002/cplu.202500001

John Alake, Darko Kwabena Adu, Blessing Wisdom Ike, Rajshekhar Karpoormath

{"title":"Fabrication And Assessment Of A Ternary Composite Of Cobalt Oxide, Cadmium Sulphide And Carbon Nanotube As A Disposable Sensor For The Sensitive Monitoring Of Tamsulosin In Serum.","authors":"John Alake, Darko Kwabena Adu, Blessing Wisdom Ike, Rajshekhar Karpoormath","doi":"10.1002/cplu.202500001","DOIUrl":"10.1002/cplu.202500001","url":null,"abstract":"Tamsulosin is an α1A blocker used to manage lower urinary tract symptoms in prostate hyperplasia patients. Research has shown a marked variation in patients' response to the drug, which may require continuous therapeutic drug monitoring (TDM) to aid in dose manipulations for better treatment outcomes. Electrochemical sensors are the least explored for tamsulosin. Here, we report the first exploration of a facile synthesis and electrochemical study of a ternary nanocomposite of cobalt oxide nanoparticles, cadmium sulfide nanorods, and multiwalled carbon nanotubes (Co3O4@CdS/MWCNT/SPE) and its application for the detection of tamsulosin in serum. A precipitation oxidation and hydrothermal methods were used to synthesise Co3O4 nanoparticles and CdS/MWCNT, respectively. Co3O4 and CdS/MWCNT masses were dispersed in deionised water and sonicated to obtain Co3O4@CdS/MWCNT. The fabricated sensor recorded the lowest-ever detection limits of 2.06×10-9 and 3.89×10-9 for CV and SWV from a linear range of 5 to 50 μM. The sensor showed remarkable selectivity in the presence of multiple interfering agents, and the average recovery was 96.4, with an RSD of 1.38 %. This study is the first to report a composite of Co3O4, CdS and MWCNT and the first disposable tamsulosin sensor. As a disposable sensor, the current sensor offers portability and miniaturisation for point-of-care applications.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202500001"},"PeriodicalIF":3.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143661706","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

Open-Shell States in Dynamic Diradicaloids. 动态双根类化合物的开壳态。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-18 DOI: 10.1002/cplu.202500033

Krzysztof Dzieszkowski, Miłosz Pawlicki

引用次数: 0

Protonation of Pt(IV) Anticancer Complexes Assayed by Vibrational Ion Spectroscopy. 振动离子光谱法测定Pt（IV）抗癌配合物的质子化作用。

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-18 DOI: 10.1002/cplu.202400754

Davide Corinti, Elisabetta Gabano, Barbara Chiavarino, Maria Elisa Crestoni, Domenico Osella, Simonetta Fornarini

{"title":"Protonation of Pt(IV) Anticancer Complexes Assayed by Vibrational Ion Spectroscopy.","authors":"Davide Corinti, Elisabetta Gabano, Barbara Chiavarino, Maria Elisa Crestoni, Domenico Osella, Simonetta Fornarini","doi":"10.1002/cplu.202400754","DOIUrl":"10.1002/cplu.202400754","url":null,"abstract":"Platinum(IV) complexes are being studied as potential alternatives to traditional platinum(II)-based chemotherapy drugs. They promise reduced side effects and potential for oral administration. In fact, a preliminary reduction in the cellular medium is recognized as a crucial step for activation. However, a deeper understanding of the protonation sites and substitution behavior of Pt(IV) complexes is needed, considering that ligand hydrolysis may compete with reduction-mediated activation, particularly in acidic environments such as the stomach. In this study, we investigated protonated Pt(IV) complexes with equatorial ligands common to widely used Pt(II) drugs containing square planar geometry, such as cisplatin and carboplatin. The additional axial substituents in the octahedral coordination sphere of Pt(IV) include different combinations of hydroxido and acetato ligands. Mass spectrometry-based methods, including collision-induced dissociation (CID) and infrared multiple photon dissociation (IRMPD) spectroscopy, supported by density functional theory (DFT) calculations, were employed. Structural characterization revealed that protonation preferences are influenced by the type and position of the ligands. Notably, protonation is generally favored on the carboxylato ligands; however, the carboplatin-derived complex exhibited a mixed population of protomers, highlighting the significance of both axial and equatorial ligand configurations in shaping the prototropic equilibria happening in solution.","PeriodicalId":148,"journal":{"name":"ChemPlusChem","volume":" ","pages":"e202400754"},"PeriodicalIF":3.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143655798","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

Cover Feature: Effect of UV Light Exposure Duration on the Removal of Exfoliation Agent Residues in Two-Dimensional Perovskite Nanosheets: An AFM Study (ChemPlusChem 3/2025) 封面专题：紫外线照射时间对二维钙钛矿纳米片中剥离剂残留物去除的影响：AFM研究（ChemPlusChem 3/2025）

IF 3 4区化学

ChemPlusChem Pub Date : 2025-03-17 DOI: 10.1002/cplu.202580303

Fatma Pinar Gordesli-Duatepe, Begümnur Küçükcan, Özge Sağlam

引用次数: 0