Chemistry - A European Journal最新文献_第9页

Decoupling Redox Potentials and Excited State Energies in Substituted Chromium(III) Chromophores. 取代铬（III）发色团的去耦氧化还原电位和激发态能。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-27 DOI: 10.1002/chem.202502668

Steven Sittel, Dimitri Zorn, Alexandra König, Jonas Marcel Grenz, Christoph Förster, Robert Naumann, Katja Heinze

{"title":"Decoupling Redox Potentials and Excited State Energies in Substituted Chromium(III) Chromophores.","authors":"Steven Sittel, Dimitri Zorn, Alexandra König, Jonas Marcel Grenz, Christoph Förster, Robert Naumann, Katja Heinze","doi":"10.1002/chem.202502668","DOIUrl":"https://doi.org/10.1002/chem.202502668","url":null,"abstract":"Redox and excited state properties of classical organic and precious metal charge-transfer (CT) photocatalysts can be tuned by substituent effects-however, not independently, as redox and chromophore units are strongly entangled. In contrast, substituent effects should selectively address electrochemical properties of photoactive complexes based on metal-centered spin-flip (SF) excited states lacking CT character without compromising excited state properties. Yet, detailed structure-activity relationships for SF chromophores are lacking. We demonstrate that the redox potentials of polypyridine chromium(III) complexes, that feature purely metal-centered SF states, can be selectively tuned by incremental substituent effects, while the excited state energies and lifetimes remain unaffected. This delivers a unique series of chromophores with identical optical properties, but redox potentials tuned by increments. We believe, that such precisely designed chromophore series provide a unique tool for the systematic investigation of photoredox reactions and recombination processes relevant to photoredox catalytic cycles.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e02668"},"PeriodicalIF":3.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145172126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Versatile Palladium-Catalyzed C-H Arylation of Fluoroarenes with 2-Chloropyridine Derivatives. 钯催化氟芳烃与2-氯吡啶衍生物的C-H芳基化反应。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-27 DOI: 10.1002/chem.202502723

Federico Belnome, Péter P Fehér, András Stirling, Csongor G Németh, Tamás Hergert, György M Keserű, Péter Ábrányi-Balogh

引用次数: 0

Hole-Selective Self-Assembled Monolayers Overlaid on NiO_x or PEDOT:PSS for Tin-Based Perovskite Solar Cells - An Overview of Recent Characterization Methods. 锡基钙钛矿太阳能电池覆盖NiOx或PEDOT:PSS的自组装单层膜-最新表征方法综述。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-27 DOI: 10.1002/chem.202502461

Donghoon Song, Seung Wook Shin, Hui-Ping Wu, Eric Wei-Guang Diau

{"title":"Hole-Selective Self-Assembled Monolayers Overlaid on NiOx or PEDOT:PSS for Tin-Based Perovskite Solar Cells - An Overview of Recent Characterization Methods.","authors":"Donghoon Song, Seung Wook Shin, Hui-Ping Wu, Eric Wei-Guang Diau","doi":"10.1002/chem.202502461","DOIUrl":"https://doi.org/10.1002/chem.202502461","url":null,"abstract":"Self-assembled monolayers (SAMs) with high hole-selectivity have seen growing use in the research realm of perovskite solar cells (PSCs). Even though SAMs can be used solely, their hole-selective performance is amplifiable on a p-type underlayer such as nickel oxide (NiOx) or poly(3,4-ethylenedioxythiophene) polystyrenesulfonate (PEDOT:PSS). This is especially prominent in lead-free tin-based PSCs. Herein, we review recent relevant publications on hole-selective SAMs overlaid on NiOx or PEDOT:PSS for tin PSCs. We first examine the characteristic features of the SAMs introduced in each publication. Since SAMs can affect the surface properties, interfacial properties, and perovskite quality, we focus on how these aspects are characterized and which methods are employed. In particular, the employed methods are various spanning computational simulations, microscopy imaging and electrochemical, spectroscopic, and crystallographic measurements. Through this review, we aim to encourage researchers to explore these aspects and methodologies in future research on hole-selective SAMs for tin PSCs.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e02461"},"PeriodicalIF":3.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145172143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

(2-Phosphinophenyl)aluminum Dichloride Complexes as Intramolecular Al/P Frustrated Lewis Pairs for Ketone, Ester, and Imine Activation. （2-膦苯基）二氯化铝配合物作为分子内Al/P受挫刘易斯对对酮、酯和亚胺的活化。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-27 DOI: 10.1002/chem.202502450

Yoshihiro Nishimoto, Hirotaka Okamoto, Makoto Yasuda

引用次数: 0

Enhanced Solid-State Luminescence of Supramolecular Tessellation Assemblies Through Förster Resonance Energy Transfer From Counterions. 通过Förster反离子共振能量转移增强超分子镶嵌组件的固态发光。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-27 DOI: 10.1002/chem.202502612

Baoqi Wu, Rongzhi Tang, Zhi-Wei Li, Feng Lin, Yuzhe Pi, Xinxin Li, Jinlin Chen, Hongwei Liu, Yu Tan, Gangfeng Ouyang

{"title":"Enhanced Solid-State Luminescence of Supramolecular Tessellation Assemblies Through Förster Resonance Energy Transfer From Counterions.","authors":"Baoqi Wu, Rongzhi Tang, Zhi-Wei Li, Feng Lin, Yuzhe Pi, Xinxin Li, Jinlin Chen, Hongwei Liu, Yu Tan, Gangfeng Ouyang","doi":"10.1002/chem.202502612","DOIUrl":"https://doi.org/10.1002/chem.202502612","url":null,"abstract":"The development of straightforward strategies for constructing supramolecular tessellations with enhanced solid-state luminescence has attracted growing interest in supramolecular chemistry and luminescent materials. Herein, we report the formation of diverse supramolecular tiling patterns by combining electron-deficient bipyridinium-based cationic macrocycles with either naphthalene-1-sulfonate or naphthalene-2-sulfonate counterions directly. Single-crystal X-ray diffraction reveals distinct tessellated superstructures assembled from 3,3'-bipyridinium macrocycles, stabilized by a network of electrostatic interactions, hydrogen bonding, π···π stacking, and CH···π interactions. These assemblies exhibit red-shifted and enhanced solid-state fluorescence, attributed to Förster resonance energy transfer (FRET) between the macrocycles and their aromatic counterions. Crystallographic and computational studies provide molecular-level insights into the noncovalent forces governing both the assembly process and luminescence enhancement. This work establishes a facile design strategy for constructing luminescent supramolecular tessellations and offers a deeper understanding of their structure-property relationships.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e02612"},"PeriodicalIF":3.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145172073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 Bond Reformation in Tetracarboxylic Acid-Based Organic Frameworks with Square Lattice Topology. 方阵结构的四羧酸基有机骨架氢键重整。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-26 DOI: 10.1002/chem.202502303

Haruka Tsuji, Ichiro Hisaki

引用次数: 0

Stereoselective Syntheses of Cyclic Microsclerodermin Derivatives. 立体选择性合成环状微硬皮素衍生物。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-26 DOI: 10.1002/chem.202502459

Kevin Bauer, Uli Kazmaier

引用次数: 0

The N-Bromo-Hammick Intermediate. n -溴-汉米克中间体。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-26 DOI: 10.1002/chem.202502434

Virinder Bhagat, J Philipp Wagner

引用次数: 0

Synthesis of Cyclobutane-Containing Tricyclic β-Lactams Based on a Saturated Scaffold Enabled by Iron-catalysed [2 + 2]-Cycloaddition. 铁催化[2 + 2]-环加成饱和支架合成含环丁烷的三环β-内酰胺。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-26 DOI: 10.1002/chem.202502476

Lea Freitag, Johannes Zeh, Levi A Ziegenhagen, Felix J Becker, Dragoș-Adrian Roșca

{"title":"Synthesis of Cyclobutane-Containing Tricyclic β-Lactams Based on a Saturated Scaffold Enabled by Iron-catalysed [2 + 2]-Cycloaddition.","authors":"Lea Freitag, Johannes Zeh, Levi A Ziegenhagen, Felix J Becker, Dragoș-Adrian Roșca","doi":"10.1002/chem.202502476","DOIUrl":"https://doi.org/10.1002/chem.202502476","url":null,"abstract":"Highly saturated, three-dimensional β-lactams are valuable motifs in medicinal chemistry, yet general routes to cyclobutane-fused analogues remain scarce. Here we disclose a concise strategy that delivers pyrrolidine-, piperidine-, and azepane-based tricyclic β-lactams. A pyrimidinediimine-iron catalyst first constructs the cyclobutane ring and the N-heterocycle in one step through an intermolecular [2 + 2]-cycloaddition of allyl amines; a subsequent photochemical intramolecular C─H insertion then forges the β-lactam. The major products adopt rigid, cage-like conformations confirmed for the pyrrolidine series by single-crystal X-ray diffraction. Comprehensive conformer sampling (using CREST), DFT-calculated NMR shifts, and DP4 statistical analysis establish the stereochemistry across the library. Strain-release opening of the β-lactam ring furnishes methylphenidate analogues in a single step, underscoring the scaffolds' synthetic versatility. Comparative studies on the corresponding bicyclic systems highlight the unique three-dimensionality imparted by the additional cyclobutane ring, further expanding the toolbox for lead-oriented synthesis.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e02476"},"PeriodicalIF":3.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145172079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

κ²-N,N'-Sulfurdiimide and κ¹-O-Sulfinylamine Complexes of Tin(IV) Chloride. 氯化锡的κ2-N，N'-硫酰亚胺和κ1- o -亚胺配合物。

IF 3.7 2区化学

Chemistry - A European Journal Pub Date : 2025-09-25 DOI: 10.1002/chem.202502342

Nathan D D Hill, René T Boeré

{"title":"κ2-N,N'-Sulfurdiimide and κ1-O-Sulfinylamine Complexes of Tin(IV) Chloride.","authors":"Nathan D D Hill, René T Boeré","doi":"10.1002/chem.202502342","DOIUrl":"https://doi.org/10.1002/chem.202502342","url":null,"abstract":"A series of Sn(IV) chloride complexes with sulfur diimide (SDI, R-NSN-R) ligands are presented, including structural characterization of first-in-class complexes of bidentate diaryl-SDIs, [SnCl4{κ2-N,N'-S(NAr)2}] (Ar = 4-X-C6H4-), and an oxygen-coordinated sulfinylamine, [SnCl4{κ1-O-OSNPh}2]. As part of the comprehensive experimental and DFT computational investigation, 119Sn NMR analysis revealed a dynamic exchange equilibrium in acetonitrile between SDI ligands and solvent, providing insight into their complicated solution-state chemical and electrochemical behavior. Voltammetric experiments show that, despite this dynamic equilibrium, the SDI ligands appear to suppress typical Sn(IV) reduction pathways. While tentative due to the complex behavior, this suggests that SDIs are functioning as redox-active (RA) ligands. In conjunction with our previous systematic characterization of diaryl-SDIs, these findings highlight their potential as an easily derivatized and highly redox-tunable category of RA ligand and emphatically warrant further investigation.","PeriodicalId":144,"journal":{"name":"Chemistry - A European Journal","volume":" ","pages":"e02342"},"PeriodicalIF":3.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145135936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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