结构化学最新文献_第4页

Electrosynthesis of hydroxylamine from earth-abundant small molecules 用地球上丰富的小分子电合成羟胺

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100383

Wen-Bo Wei , Qi-Long Zhu

引用次数: 0

Lithium-ion rapid transport mechanism and channel design in solid electrolytes 固体电解质中的锂离子快速传输机制和通道设计

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100381

Jia-Hui Li , Jinkai Qiu , Cheng Lian

引用次数: 0

Improving the electrocatalysts for conversion-type anodes of alkali-ion batteries 改进碱性离子电池转换型阳极的电催化剂

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100408

Ajay Piriya Vijaya Kumar Saroja , Yuhan Wu , Yang Xu

引用次数: 0

Recent progress in steric modulation of MR-TADF materials and doping concentration independent OLEDs with narrowband emission

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100451

Jun-Yi Wang , Jue-Yu Bao , Zheng-Guang Wu , Zheng-Yin Du , Xunwen Xiao , Xu-Feng Luo

{"title":"Recent progress in steric modulation of MR-TADF materials and doping concentration independent OLEDs with narrowband emission","authors":"Jun-Yi Wang , Jue-Yu Bao , Zheng-Guang Wu , Zheng-Yin Du , Xunwen Xiao , Xu-Feng Luo","doi":"10.1016/j.cjsc.2024.100451","DOIUrl":"10.1016/j.cjsc.2024.100451","url":null,"abstract":"<div><div>Multiple-resonance thermally activated delayed fluorescence (MR-TADF) materials hold significant promise for advancing narrowband emissive organic light-emitting diodes (OLEDs) due to their attractive narrowband emission characteristics, high emission intensity, and tunable emission colors. However, the planar nature of MR-TADF materials leads to serve π-π stacking, which can result in concentration quenching and spectral broadening, thereby limiting their further application in OLEDs. Currently, to mitigate the π-π stacking in MR-TADF materials, steric modulation is a reliable design strategy for optimizing the related molecular structures. Depending on the specific shape and scope of steric modulation, it can be categorized into the introduction of bulky groups around the resonance core, “face-to-edge” and “face-to-face” shielding between the resonance core and the steric hindrance moiety. This review systematically summarizes the structural design of MR-TADF molecules based on the different steric modulation strategies and their progress in the doping concentration-independent OLEDs. It also discusses the challenges in this research area and offers an outlook on future developments. We believe that this review will drive the rapid industrialization of narrow-emission OLEDs.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 1","pages":"Article 100451"},"PeriodicalIF":5.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151356","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

Plasmonic nanocrystals with intrinsic chirality: Biomolecule-directed synthesis and applications

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100467

Yiming Yang , Lichao Sun , Qingfeng Zhang

引用次数: 0

Rational design of metal-metal hydroxide interface for efficient electrocatalytic oxidation of biomass-derived platform molecules 合理设计金属-金属氢氧化物界面，实现生物质衍生平台分子的高效电催化氧化

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100418

Yuchen Wang , Zhenhao Xu , Kai Yan

引用次数: 0

Hexavalent iridium catalyst enhances efficiency of hydrogen production 六价铱催化剂提高了制氢效率

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100382

Hong Yin, Zhipeng Yu

引用次数: 0

Hydrogen spillover enhances the selective hydrogenation of α,β-unsaturated aldehydes on the Cu–O–Ce interface

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100438

Jinyuan Cui , Tingting Yang , Teng Xu , Jin Lin , Kunlong Liu , Pengxin Liu

{"title":"Hydrogen spillover enhances the selective hydrogenation of α,β-unsaturated aldehydes on the Cu–O–Ce interface","authors":"Jinyuan Cui , Tingting Yang , Teng Xu , Jin Lin , Kunlong Liu , Pengxin Liu","doi":"10.1016/j.cjsc.2024.100438","DOIUrl":"10.1016/j.cjsc.2024.100438","url":null,"abstract":"<div><div>The industrially important selective hydrogenation of <em>α</em>,<em>β</em>-unsaturated aldehydes to allyl alcohol is still challenging to realize using heterogenous hydrogenation catalysts. Supported Cu catalysts have shown moderate selectivity, yet low activity for the reaction, due to the electronic structure of Cu. By anchoring atomically dispersed Pd atoms onto the exposed Cu surface of Cu@CeO<sub>2</sub>, we report in this work that hydrogen spillover activates the inert metal-oxide interfaces of Cu@CeO<sub>2</sub> into highly effective and selective catalytic sites for hydrogenation under mild reaction conditions. The as-prepared catalysts exhibit much higher catalytic activity in the selective hydrogenation of acrolein than Cu@CeO<sub>2</sub>. Comprehensive studies reveal that atomically dispersed Pd species are critical for the activation and homolytic splitting of H<sub>2</sub>. The activated H atoms easily spill to the Cu–O–Ce interfaces as Cu–H<sup><em>δ</em></sup><sup>–</sup> and interfacial Ce–O–H<sup><em>δ</em>+</sup> species, making them the active sites for hydrogenation of polar C=O bonds. Moreover, the weak adsorption of allyl alcohol on the Pd and Cu–O–Ce interfacial sites prevents deep hydrogenation, leading to selective hydrogenation of several <em>α</em>,<em>β</em>-unsaturated aldehydes. Overall, we demonstrate here a synergic effect between single atom alloy and the support for activation of an inert metal-oxide interface into selective catalytic sites.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 1","pages":"Article 100438"},"PeriodicalIF":5.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143150730","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

Exploring temperature-driven phase dynamics of phosphate: The periodic to incommensurately modulated long-range ordered phase transition in CsCdPO4

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100446

Mengjia Luo , Yi Qiu , Zhengyang Zhou

引用次数: 0

Strategic modulation of CoFe sites for advanced bifunctional oxygen electrocatalyst

IF 5.9 4区化学

结构化学 Pub Date : 2025-01-01 DOI: 10.1016/j.cjsc.2024.100470

Juhong Zhou , Hui Zhao , Ping Han , Ziyue Wang , Yan Zhang , Xiaoxia Mao , Konglin Wu , Shengjue Deng , Wenxiang He , Binbin Jiang

{"title":"Strategic modulation of CoFe sites for advanced bifunctional oxygen electrocatalyst","authors":"Juhong Zhou , Hui Zhao , Ping Han , Ziyue Wang , Yan Zhang , Xiaoxia Mao , Konglin Wu , Shengjue Deng , Wenxiang He , Binbin Jiang","doi":"10.1016/j.cjsc.2024.100470","DOIUrl":"10.1016/j.cjsc.2024.100470","url":null,"abstract":"<div><div>An effective strategy of regulating active sites in bifunctional oxygen electrocatalysts is essentially desired, especially in rechargeable metal-air batteries (RZABs). Herein, a highly efficient electrocatalyst of CoFe alloys embedded in pyridinic nitrogen enriched N-doped carbon (CoFe/P-NC) is intelligently constructed by pyrolysis strategy. The high concentration of pyridinic nitrogen in CoFe/P-NC can significantly reprogram the redistribution of electron density of metal active sites, consequently optimizing the oxygen adsorption behavior. As expected, the pyridinic nitrogen guarantees CoFe/P-NC providing the low overpotential of the overall oxygen electrocatalytic process (Δ<em>E</em><sub>ORR-OER</sub> = 0.73 V <em>vs</em><em>.</em> RHE) and suppresses the benchmark electrocatalysts (Pt/C & RuO<sub>2</sub>). Assembled rechargeable Zn-air battery using CoFe/P-NC demonstrates a promising peak power density of 172.0 mW cm<sup>−2</sup>, a high specific capacity of 805.0 mAh g<sup>−1</sup><sub>Zn</sub> and an excellent stability. This work proposes an interesting strategy for the design of robust oxygen electrocatalysts for energy conversion and storage fields.</div></div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"44 1","pages":"Article 100470"},"PeriodicalIF":5.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151354","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