IF 5.9 4区化学

结构化学 Pub Date : 2024-07-01 DOI: 10.1016/j.cjsc.2024.100333

{"title":"Pressure-induced emission in 0D metal halide (EATMP)SbBr5 by regulating exciton-phonon coupling","authors":"","doi":"10.1016/j.cjsc.2024.100333","DOIUrl":"10.1016/j.cjsc.2024.100333","url":null,"abstract":"<div>Zero-dimensional (0D) hybrid metal halides are considered as promising light-emitting materials due to their unique broadband emission from self-trapped excitons (STEs). Despite substantial progress in the development of these materials, the photoluminescence quantum yields (PLQY) of hybrid Sb–Br analogs have not fully realized the capabilities of these materials, necessitating a better fundamental understanding of the structure-property relationship. Here, we have achieved a pressure-induced emission in 0D (EATMP)SbBr5 (EATMP = (2-aminoethyl)trimethylphosphanium) and the underlying mechanisms are investigated using in situ experimental characterization and first-principles calculations. The pressure-induced reduction in the overlap between the STE states and ground states (GSs) results in the suppression of phonon-assisted non-radiative decay. The photoluminescence (PL) evolution is systematically demonstrated to be controlled by the pressure-regulated exciton-phonon coupling, which can be quantified using Huang-Rhys factor S. Through detailed studies of the S-PLQY relation in a series of 0D hybrid antimony halides, we establish a quantitative structure-property relationship that regulating S value toward 21 leads to the optimized emission. This work not only sheds light on pressure-induced emission in 0D hybrid metal halides but also provides valuable insights into the design principles for enhancing the PLQY in this class of materials.</div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"43 7","pages":"Article 100333"},"PeriodicalIF":5.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141047768","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

Achieving Ullmann coupling reaction via photothermal synergy with ultrafine Pd nanoclusters supported on mesoporous TiO2 通过介孔二氧化钛上支持的超细钯纳米团簇的光热协同作用实现乌尔曼偶联反应

IF 5.9 4区化学

结构化学 Pub Date : 2024-07-01 DOI: 10.1016/j.cjsc.2024.100305

引用次数: 0

Promoting energy transfer pathway in porphyrin-based sp2 carbon-conjugated covalent organic frameworks for selective photocatalytic oxidation of sulfide 促进卟啉基 Sp2 碳共轭共价有机框架中的能量转移途径，实现硫化物的选择性光催化氧化

IF 5.9 4区化学

结构化学 Pub Date : 2024-07-01 DOI: 10.1016/j.cjsc.2024.100299

{"title":"Promoting energy transfer pathway in porphyrin-based sp2 carbon-conjugated covalent organic frameworks for selective photocatalytic oxidation of sulfide","authors":"","doi":"10.1016/j.cjsc.2024.100299","DOIUrl":"10.1016/j.cjsc.2024.100299","url":null,"abstract":"<div>The sp2 carbon-conjugated covalent organic frameworks (COFs) with fully π-conjugated lattice and high chemical stability are promising heterogeneous photocatalysts. Herein, we report the design and synthesis of a novel palladium (Pd) porphyrin-based sp2 carbon-conjugated COF (PdPor-sp2c-COF) with an eclipsed AA stacking 2D structure. Interestingly, PdPor-sp2c-COF showed high crystallinity, good chemical stability, and a broad absorption of visible light. Moreover, compared to our previously reported metal-free Por-sp2c-COF, PdPor-sp2c-COF displays an improved photocatalytic performance in the selective aerobic oxidation of sulfides under green light irradiation. The systematic mechanistic studies testified that the enhanced photocatalytic activity can be ascribed to promoting energy transfer pathway over PdPor-sp2c-COF. Our study clearly demonstrates that it is favorable to promote the energy transfer pathway in sp2 carbon-conjugated COFs by using metalloporphyrin-based molecular building blocks. This work will inspire us to design and synthesize novel photocatalysts based on COFs for the selective aerobic oxidation.</div>","PeriodicalId":10151,"journal":{"name":"结构化学","volume":"43 7","pages":"Article 100299"},"PeriodicalIF":5.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609580","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

Interconnecting zero-dimensional porous organic cages into sub-8 nm nanofilm for bio-inspired separation 将零维多孔有机笼互连到 8 纳米以下的纳米薄膜中，实现生物启发式分离

IF 5.9 4区化学

结构化学 Pub Date : 2024-07-01 DOI: 10.1016/j.cjsc.2024.100312

引用次数: 0

Susceptible constriction enabling fast cycling of lithium metal in solid-state batteries: Silicon as an example 固态电池中的锂金属可通过易收缩性实现快速循环：以硅为例

IF 5.9 4区化学

结构化学 Pub Date : 2024-07-01 DOI: 10.1016/j.cjsc.2024.100276

引用次数: 0

Covalent organic frameworks for artificial photosynthetic diluted CO2 reduction 用于人工光合作用稀释二氧化碳还原的共价有机框架

IF 5.9 4区化学

结构化学 Pub Date : 2024-07-01 DOI: 10.1016/j.cjsc.2024.100307