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Regulating the coplanarity of π-conjugated units through hydrogen bonding in FAHC2O4 and FAH2C3N3S3 crystals 通过氢键调节FAHC2O4和FAH2C3N3S3晶体中π共轭单位的共平面性
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-09-06 DOI: 10.1016/j.cjsc.2025.100714
Yi-Chang Yang , Rui-Xi Wang , Li-Ming Wu , Ling Chen
The donor-acceptor hydrogen bonding strategy has been proposed to enforce coplanar packing of anisotropic π-conjugated units, thereby maximizing the material's achievable birefringence. Herein, employing this strategy, we successfully obtain two highly coplanar birefringent crystals, FAHC2O4 and FAH2C3N3S3 (FA+: CH5N2+, formamidinium). FAHC2O4 shows a wide bandgap (4.20 eV), while FAH2C3N3S3 exhibits a narrower bandgap (2.96 eV) due to the involvement of sulfur atom. Both crystals display notable birefringence in their respective material classes: 0.275@546 nm and 0.504@546 nm, respectively. X-ray crystallography and computational studies attribute the pronounced birefringence to their π-conjugated moieties and their near-coplanar configurations. Comparative analysis of FAHC2O4 and FAH2C3N3S3 further establishes that the hydrogen bond strength directly influences the molecular coplanarity degree. These findings provide new insights for applying the donor-acceptor hydrogen bonding strategy in the rational design of high-performance birefringent materials.
提出了供体-受体氢键策略,以加强各向异性π共轭单元的共面填充,从而最大限度地提高材料的双折射性能。在此,我们成功地获得了两个高度共面双折射晶体FAHC2O4和FAH2C3N3S3 (FA+: CH5N2+,甲脒)。FAHC2O4的禁带宽度为4.20 eV,而FAH2C3N3S3的禁带宽度较窄(2.96 eV)。两种晶体在各自的材料类别中分别表现出显著的双折射:0.275@546 nm和0.504@546 nm。x射线晶体学和计算研究将明显的双折射归因于它们的π共轭部分和近共面结构。FAHC2O4和FAH2C3N3S3的对比分析进一步证实了氢键强度直接影响分子共面度。这些发现为在高性能双折射材料的合理设计中应用供体-受体氢键策略提供了新的见解。
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引用次数: 0
Frustrated Lewis pairs in CO2 photoreduction: A review on synergistic activation and charge separation CO2光还原中受挫刘易斯对:协同活化和电荷分离的研究进展
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-09-17 DOI: 10.1016/j.cjsc.2025.100728
Huarui Han , Yangrui Xu , Yu Cheng , Liguang Tang , Jie Jin , Xinlin Liu , Changchang Ma , Ziyang Lu
Photocatalytic CO2 reduction is a promising route toward carbon neutrality, yet its practical application is hindered by the high activation energy barrier of CO2, rapid recombination of photo-generated electrons, and poor product selectivity of traditional catalysts. Frustrated Lewis pairs (FLPs), which feature spatially separated Lewis acid and base sites, have recently emerged as a novel strategy to overcome these limitations. This review systematically examines the progress in FLPs-based photocatalytic systems. We focus on the construction strategies for FLPs active sites, the optimization of charge carrier dynamics, and the synergistic electron transfer mechanisms with photoactive components. Central theme is the elucidation of microscopic mechanisms governing CO2 activation, key intermediate conversion, and the efficient utilization of photogenerated electrons. By synthesizing current knowledge and outlining future prospects, this review aims to provide a theoretical framework that guides the rational design of highly active and selective catalysts for solar-driven CO2 reduction.
光催化CO2还原是一条很有前途的碳中和途径,但由于CO2的高活化能势垒、光生电子的快速重组以及传统催化剂的产物选择性差,阻碍了其实际应用。挫折刘易斯对(FLPs),其特征是空间上分离的刘易斯酸和碱位点,最近成为克服这些限制的一种新策略。本文系统地综述了基于flps的光催化体系的研究进展。重点研究了FLPs活性位点的构建策略、载流子动力学的优化以及与光活性组分的协同电子转移机制。中心主题是阐明微观机制控制CO2活化,关键中间转化,以及光电子的有效利用。通过对现有知识的综合和对未来前景的展望,本综述旨在为合理设计高活性和选择性的太阳能驱动二氧化碳减排催化剂提供一个理论框架。
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引用次数: 0
Achieving the birefringence-bandgap trade-off: Hydrogen-bond engineered biuret-cyanurate 实现双折射带隙权衡:氢键工程二脲-氰尿酸盐
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-07-29 DOI: 10.1016/j.cjsc.2025.100695
Ziqi Chen , Miriding Mutailipu
Birefringent materials play a crucial role in light polarization, with important applications in fiber-optic communications. However, developing such materials for the solar-blind region and shorter wavelengths remains challenging due to the inherent trade-off between birefringence and bandgap. In this work, we introduce a strategic assembly of cyanuric rings with biuret units—the latter identified for the first time as a birefringence-active motif—resulting in two new compounds: [H5C2N3O2][H3C3N3O3] (1) and [H5C2N3O2][H3C3N3O3xH2O (x ≈ 0.43) (2). Through hydrogen bonding-driven structural optimization, compound 2 achieves a 50% increase in birefringence (Δn = 0.403 @ 546 nm) compared to 1, while retaining a short cutoff edge of 208 nm. This advancement demonstrates that hydrogen-bond-guided structural design, combined with novel functional units, can overcome the traditional birefringence-bandgap conflict, opening new possibilities for short-wavelength birefringent materials with strong optical anisotropy.
双折射材料在光偏振中起着至关重要的作用,在光纤通信中有着重要的应用。然而,由于双折射和带隙之间固有的权衡,开发这种材料用于太阳盲区和短波长仍然具有挑战性。在这项工作中,我们引入了双缩脲单元与氰尿酸环的策略组装,后者首次被发现为双折射活性基序,得到了两个新化合物:[H5C2N3O2][H3C3N3O3](1)和[H5C2N3O2][H3C3N3O3]·xH2O (x≈0.43)(2)。通过氢键驱动的结构优化,化合物2的双折射比1提高了50% (Δn = 0.403 @ 546 nm),同时保持了208 nm的短截止边。这一进展表明,氢键引导结构设计与新型功能单元相结合,可以克服传统的双折射带隙冲突,为具有强光学各向异性的短波双折射材料开辟了新的可能性。
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引用次数: 0
Construction of metal cluster-based materials directed by a bifunctional pyridyl tripodal alcohol ligand according to hard and soft acid-base theory 根据硬、软酸碱理论,以双功能吡啶基三足醇配体为导向构建金属簇基材料
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-08-26 DOI: 10.1016/j.cjsc.2025.100702
Yan-Jia Lin, Qing-Xin Zeng, Xiao-Min Shen, Shou-Tian Zheng, Xin-Xiong Li
Crystalline metal cluster-based organic-inorganic hybrid materials have emerged as a significant frontier in materials chemistry due to their unique structural designability and tunable properties. The bifunctional ligand 2-(hydroxymethyl)-2-(4-pyridyl)-1,3-propanediol (H3L), featuring both hard hydroxyl donors on one side and a soft pyridyl group on the other side, enables selective metal coordination via hard-soft acid-base (HSAB) theory and directs hierarchical metal cluster assembly. This review systematically summarizes the recent advances on metal cluster-based materials coordinated by H3L, including their syntheses, crystal structures, and related physicochemical properties.
晶体金属簇基有机-无机杂化材料因其独特的结构可设计性和可调性而成为材料化学研究的重要前沿。双功能配体2-(羟甲基)-2-(4-吡啶基)-1,3-丙二醇(H3L),一边是硬羟基供体,另一边是软吡啶基,通过硬-软酸碱(HSAB)理论实现选择性金属配位,并指导分层金属簇组装。本文系统地综述了H3L配位金属簇基材料的合成、晶体结构和相关的理化性质等方面的研究进展。
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引用次数: 0
Atomically dispersed cobalt in MFI zeolite framework for sustainable propane dehydrogenation 原子分散钴在MFI分子筛框架丙烷可持续脱氢
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-07-28 DOI: 10.1016/j.cjsc.2025.100683
Xiang Fu, Jun Yu, Weili Dai
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引用次数: 0
Order-by-order control over the nonlinear optical properties of atomically precise nanoclusters 原子精密纳米团簇非线性光学性质的逐级控制
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-09-20 DOI: 10.1016/j.cjsc.2025.100735
Ying Xu , Yan Pu , Qiong Zhang, Xi Kang, Manzhou Zhu
It remains highly challenging to achieve the high-order nonlinear optical (NLO) properties of atomically precise metal nanoclusters via template-maintained manipulation. Here, based on the M1Ag24(SR)18 (M = Ag/Au/Pt/Pd; SR = 2,4-dimethylthiophenol) cluster template, we demonstrated that the innermost kernel alloying rendered these nanoclusters highly controllable towards the nonlinear optics. The Pd-alloyed Pd1Ag24(SR)18 only displayed single-photon-excited fluorescence, while the homo-silver Ag25(SR)18 nanocluster generated the two-photon-excited fluorescence characterization. The Au- and Pt-doped M1Ag24(SR)18 nanoclusters showed high-order three- and four-photon-excited fluorescence, respectively, demonstrating that the order-by-order control over the nonlinear optics of nanoclusters has been accomplished. Moreover, Pt1Ag24(SR)18 with high-order NLO characterization exhibited the best optical limiting performance under 1000 nm excitation, in agreement with its most prominent NLO property. Overall, this work presents an intriguing cluster template that enables successive order control over the nonlinear optics of atomically precise metal nanoclusters, hopefully paving the way for developing cluster-based nanomaterials with customized optical characterizations.
通过模板维持操作来实现原子精密金属纳米团簇的高阶非线性光学(NLO)特性仍然是一个极具挑战性的问题。基于M1Ag24(SR)18 (M = Ag/Au/Pt/Pd; SR = 2,4-二甲基噻吩)簇模板,我们证明了最内层的核合金使这些纳米簇具有高度的非线性光学可控性。钯合金的Pd1Ag24(SR)18纳米团簇仅显示单光子激发荧光,而均银的Ag25(SR)18纳米团簇产生双光子激发荧光表征。Au和pt掺杂的M1Ag24(SR)18纳米团簇分别表现出高阶的三光子和四光子激发荧光,表明对纳米团簇非线性光学的有序控制已经完成。此外,具有高阶NLO表征的Pt1Ag24(SR)18在1000 nm激发下表现出最佳的光限制性能,这与其最突出的NLO特性相一致。总的来说,这项工作提出了一个有趣的簇模板,可以对原子精确金属纳米簇的非线性光学进行连续顺序控制,有望为开发具有定制光学特性的簇基纳米材料铺平道路。
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引用次数: 0
Localized acidic microenvironment by Brønsted acid oxides eliminates ultrapure water requirement in PEM electrolysers Brønsted酸性氧化物的局部酸性微环境消除了PEM电解槽对超纯水的需求
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-07-25 DOI: 10.1016/j.cjsc.2025.100680
Wentao Xu, Fuqin Zheng, Wei Chen
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引用次数: 0
Ligand conformational adaptability modulated self-assembly of Solomon links (412) and trefoil knots (31) 配体构象适应性调节所罗门链(412)和三叶结(31)的自组装
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-09-08 DOI: 10.1016/j.cjsc.2025.100712
Xing-Cheng Hu , Qiu-Shui Mu , Shu-Jin Bao , Yan Zou , Xin-Yu Wang , Guo-Xin Jin
Mechanically interlocked molecules (MIMs) have unique properties with broad applications, yet constructing both knotted and linked topologies from the same ligand remains challenging due to their distinct geometric demands. To address this, we design and synthesize a conformationally adaptive ligand 4,7-bis(3-(pyridin-4-yl)phenyl) benzo[c][1,2,5]thiadiazole (L1) with a tunable torsional angle θ of N1–C1–C2–N2 ranging from 7.5° to 108.9°. Utilizing coordination-driven self-assembly at ambient temperature, L1 selectively assembles with binuclear half-sandwich units Rh–B1, Rh–B2, Rh–B3, and Rh–B4 featuring Cp∗RhIII (Cp∗ = η5-pentamethylcyclopentadienyl) into distinct topologies: Solomon links Rh-1, trefoil knots Rh-2, molecular tweezers Rh-3, and Rh-4, respectively. Crucially, the self-adaptability of ligand L1 directs topology formation through programming different combination of noncovalent interactions (π-π stacking, CH⋯π interaction, and lone pair-π interaction), thus navigating divergent assembly pathways by conformational switching, as evidenced by X-ray crystallography analysis, independent gradient model (IGM) analysis, detailed nuclear magnetic resonance (NMR) spectroscopy and electrospray ionization time-of-flight/mass spectrometry (ESI-TOF/MS). This strategy can also be extended to construct Cp∗IrIII analogs (Solomon links Ir-1, trefoil knots Ir-2, molecular tweezers Ir-3 and Ir-4), demonstrating metal-independent control and achieving intricate topologies in a high yield.
机械互锁分子(mim)具有独特的性质和广泛的应用,但由于其独特的几何要求,从同一配体构建结和连接拓扑结构仍然具有挑战性。为了解决这个问题,我们设计并合成了构象自适应配体4,7-二(3-(吡啶-4-基)苯基)苯并[c][1,2,5]噻二唑(L1),其N1-C1-C2-N2的扭角θ在7.5°~ 108.9°范围内可调。在室温下利用配位驱动的自组装,L1选择性地将具有Cp∗RhIII (Cp∗= 5-五甲基环戊二烯基)的双核半夹心单元Rh-B1, Rh-B2, Rh-B3和Rh-B4组装成不同的拓扑结构:Solomon连接Rh-1,三叶结Rh-2,分子钳Rh-3和Rh-4。至关重要的是,配体L1的自适应性通过编程非共价相互作用(π-π堆叠、CH⋯π相互作用和孤对-π相互作用)的不同组合来指导拓扑形成,从而通过构象开关导航不同的组装路径,这一点得到了x射线晶体学分析、独立梯度模型(IGM)分析、详细的核磁共振(NMR)光谱和电喷雾电离飞行时间/质谱(ESI-TOF/MS)的证明。这种策略也可以扩展到构建Cp * IrIII类似物(Solomon链接Ir-1,三叶结Ir-2,分子镊子Ir-3和Ir-4),证明了金属无关的控制和高产量的复杂拓扑结构。
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引用次数: 0
Homochiral metal-organic frameworks bearing privileged ligands for heterogeneous asymmetric catalysis 具有特殊配体的异构不对称催化的同手性金属有机框架
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-09-09 DOI: 10.1016/j.cjsc.2025.100719
Pengfu Gao, Yuan Geng, Wei Gong
Chiral metal-organic frameworks (CMOFs), a class of highly crystalline and porous materials with tailorable chiral characteristics, have currently become an interdisciplinary between chirality chemistry, coordination chemistry, and material chemistry, which involve in many subjects including chemistry, physics, optics, medicine, pharmacology, biology, crystal engineering, environmental science, etc. Their special structural features such as porosity, modularity, and chirality have endowed them with a variety of unique effects in promoting enantioselective processes, particularly asymmetric catalysis. Here, we provide a brief review of the state of CMOF field from the privileged ligand design to the heterogeneous enantioselective catalysis. We hope that this review will provide researchers a better understanding of CMOF chemistry and facilitate the future research endeavors for rationally designing privileged chiral framework materials for challenging catalytic applications.
手性金属有机骨架(CMOFs)是一类具有可定制手性特性的高结晶性多孔材料,目前已成为手性化学、配位化学和材料化学的交叉学科,涉及化学、物理、光学、医学、药理学、生物学、晶体工程、环境科学等多个学科。它们特殊的结构特征,如多孔性、模块化和手性,使它们在促进对映选择过程,特别是不对称催化方面具有各种独特的作用。在此,我们简要地回顾了从特殊配体设计到异构对映选择性催化的CMOF领域的研究进展。我们希望这一综述能够为研究者更好地理解CMOF化学提供帮助,并为今后合理设计具有挑战性的催化应用的特殊手性框架材料提供帮助。
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引用次数: 0
Photon-avalanche upconversion with nonlinearities exceeding 500 非线性超过500的光子雪崩上转换
IF 10.3 4区 化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2025-10-01 Epub Date: 2025-07-25 DOI: 10.1016/j.cjsc.2025.100682
Dengfeng Yang , Chenyin Zheng , Wei Zheng , Xueyuan Chen
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引用次数: 0
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