ChemPhotoChem最新文献_第9页

Front Cover: Intra and interatomic energy contributions in the photophysical relaxation of small aromatic molecules (ChemPhotoChem 6/2024) 封面：芳香族小分子光物理弛豫中的原子内和原子间能量贡献（ChemPhotoChem 6/2024）

IF 3.7 4区化学

ChemPhotoChem Pub Date : 2024-06-11 DOI: 10.1002/cptc.202480601

Jesús Jara-Cortés, José A. Pérez-Pimienta, Jae Woo Park, Jesús Hernández-Trujillo

引用次数: 0

Hot Exciton versus Hot Exciplex TADF Mechanism – Effect of the Donor-Acceptor Functionalization Pattern on Anthracene-based Emitters 热激子与热激簇 TADF 机制--蒽基发光体上的供体-受体功能化模式的影响

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-06-11 DOI: 10.1002/cptc.202400141

Felix Majer, Lars Roß, A. Lennart Respondek, Christoph Bannwarth, Alexander J. C. Kuehne

引用次数: 0

Improving Photophysical Properties of Deazaflavin Derivatives by Acrylaldehyde Bridging: A Theoretical Investigation 通过丙烯醛桥接改善去氮黄素衍生物的光物理特性：理论研究

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-06-10 DOI: 10.1002/cptc.202400053

Dr. Huimin Guo, Siyu Liu, Dr. Xin Liu, Prof. Dr. Jianzhang Zhao

{"title":"Improving Photophysical Properties of Deazaflavin Derivatives by Acrylaldehyde Bridging: A Theoretical Investigation","authors":"Dr. Huimin Guo, Siyu Liu, Dr. Xin Liu, Prof. Dr. Jianzhang Zhao","doi":"10.1002/cptc.202400053","DOIUrl":"10.1002/cptc.202400053","url":null,"abstract":"The electronic structure and photophysical properties of several acrylaldehyde-bridged deazaflavin derivatives (cFLs) were investigated theoretically. The impact of acrylaldehyde bridging on photophysical properties of deazaflavin (cFL) is strongly site-dependent. Specifically, the change of adiabatic energy of electronic transitions(ΔEad) and vibronic coupling promote fluorescent emission to be comparable to internal conversion of cFL and cFL4 (both C5−C6 and C9−N10 bridged, but C9−N10 bridged by propene), turning them eligible as fluorescent sensors. As El-Sayed's rule is satisfied in cFL1(C5−C6 bridged), cFL2(C9−N10 bridged) and cFL3(both C5−C6 and C9−N10 bridged), intersystem crossing from first singlet excited state to triplet excited states (Tn) become dominant and the evolution of excited cFLs from T1 appears vital. The rate constants of photophysical processes indicate these cFLs are of dominantly high steady state T1 concentration and are potential triplet sensitizers. We expect the findings would pave the way for rational design of novel cFLs with extraordinary photophysical properties.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141365036","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

Blue Emission from Metal Halide Perovskites: Strategies and Applications 金属卤化物包荧光体的蓝色发射：策略与应用

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-06-10 DOI: 10.1002/cptc.202400139

Shiqiang Liu, Yuechuan Wu, Junyan Wu, Zhenghuan Lin

{"title":"Blue Emission from Metal Halide Perovskites: Strategies and Applications","authors":"Shiqiang Liu, Yuechuan Wu, Junyan Wu, Zhenghuan Lin","doi":"10.1002/cptc.202400139","DOIUrl":"10.1002/cptc.202400139","url":null,"abstract":"Luminescent metal halides, as a type of luminescent semiconductor material, offer advantages that fulfill the requirements of emerging light source devices, such as high luminescence efficiency, good thermal stability, and tunable colorful emission. Blue light being one of the three primary colors plays a crucial role in the field of lighting and colorful displays. However, the progress in device performance of blue-light materials lags behind that of green and red-light materials. Currently, there have been numerous reports on metal halide perovskite blue-light materials, but a comprehensive review on the development and performance control of blue-light metal halides is yet to be found. This paper provides a comprehensive summary of the design strategies and luminescence mechanisms of blue-light perovskites with various luminescence centers, as well as their application progress in the fields of light-emitting diodes (LEDs), X-ray scintillators, information anti-counterfeiting and encryption. It also explores possible directions for subsequent performance improvement. This work aims to offer valuable insights and recommendations for the future development of blue-light metal halides, with significant implications for the fabrication of novel blue light devices and advancements in detection technology.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141365801","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

Strain Engineered Bridged Bicyclic Diene Photoswitches in the Race of Next-Generation Molecular Solar Thermal Energy Storage 应变工程桥接双环二烯光电开关与下一代分子太阳能热储的竞赛

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-06-07 DOI: 10.1002/cptc.202400089

Akanksha Ashok Sangolkar, Rama Krishna Kadiyam, Ravinder Pawar

{"title":"Strain Engineered Bridged Bicyclic Diene Photoswitches in the Race of Next-Generation Molecular Solar Thermal Energy Storage","authors":"Akanksha Ashok Sangolkar, Rama Krishna Kadiyam, Ravinder Pawar","doi":"10.1002/cptc.202400089","DOIUrl":"10.1002/cptc.202400089","url":null,"abstract":"Norbornadiene/Quadricyclane (NBD/QC) is a prototypical bridged bicyclic diene (BBD)-based photoswitch that has been well-studied for molecular solar thermal energy storage (MOST). Inspired by the recent synthetically accessed BBDs, herein several photoswitches are rationally designed with modulated ring strain energies (RSE) in photoisomers to incorporate high energy storage density (ESD) and storage time in a single couple. The storage energy (<math></math>\u0000) calculated at DLPNO-CCSD(T)/Def2TZVP level is correlated with difference in RSE of two isomers (ΔRSE) whereas thermal back reaction (TBR) barrier calculated at (8,8)-CASPT2/6-311++G** shows correlation with RSE in metastable photoproduct. On the basis of these structure-property-RSE relationships, we recognized that two photoisomers need not to be highly strained. Instead, the RSE in the photoproduct and diene should be minimized while maintaining a large enthalpy difference between them to increase ESD and extend energy storage times in a single photoswitch. TBR barrier is governed by RSE in photoproduct and increasing strain in photoproduct may improve the <math></math>\u0000 but at the cost of the TBR barrier. Herein, the structural skeletons are explored that holds promise to remarkably improve thermochemical properties relative to the unsubstituted BBD-based photoswitches reported so far. The BBD molecules with short saturated bridge length but elongated unsaturated bridges could bestow desirable thermochemical parameters and can be regarded as excellent candidates for MOST application. The work lays a theoretical foundation that guides to improve thermochemical properties via strain engineering of BBD-based photoswitches and opens a new avenue for designing principles and future experimental investigations of MOST systems.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141372441","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

Pyrene Derivatives Containing Triphenylacrylonitrile as Aggregation Induced Emissive Mechanochromic Materials 含三苯基丙烯腈的芘衍生物作为聚集诱导发射型机械变色材料

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-06-06 DOI: 10.1002/cptc.202400119

K. R. Justin Thomas, Abhishek Maurya

引用次数: 0

Diindeno-Fused Corannulene-Extended Tetrathiafulvalenes 二茚并入芫荽烯-扩展四硫杂戊烯

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-06-04 DOI: 10.1002/cptc.202400122

Dr. Viktor Bliksted Roug Pedersen, Prof. Dr. Ramesh Jasti, Prof. Dr. Mogens Brøndsted Nielsen

引用次数: 0

Room-Temperature Afterglow Nanostructures via Block Copolymer Self-Assembly 通过嵌段共聚物自组装实现室温余辉纳米结构

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-05-31 DOI: 10.1002/cptc.202400113

Yue Zhang, Xiuzheng Chen, Tengyue Wang, Zhe Mo, Guangming Wang, Haodong Li, Kaka Zhang

{"title":"Room-Temperature Afterglow Nanostructures via Block Copolymer Self-Assembly","authors":"Yue Zhang, Xiuzheng Chen, Tengyue Wang, Zhe Mo, Guangming Wang, Haodong Li, Kaka Zhang","doi":"10.1002/cptc.202400113","DOIUrl":"10.1002/cptc.202400113","url":null,"abstract":"Miniaturization of organic afterglow materials has shown promising application in biomedical and other areas. Current technologies, such as nanoprecipitation, mechanical treatment, and emulsion polymerization, lack the capability of facile control on the morphology and dimension of the miniaturized organic afterglow materials. Here we report the fabrication of organic afterglow nanostructures via block copolymer self-assembly at room temperature. The fabrication is based on two-component design strategy where hydrophobic luminescent emitters with small rate constants of phosphorescence decay or reverse intersystem crossing are designed as the first component. Amphiphilic block copolymers that can form spherical core-shell micelles and worm-like micelles with glassy hydrophobic cores are used as the second component. Upon addition of water into a dimethylformamide solution that contains the two components, the amphiphilic block copolymers self-assemble into well-defined nanostructures and accommodate the hydrophobic luminescent emitters in nanostructure's hydrophobic cores. After switching to pure water by dialysis, room-temperature afterglow nanostructures have been obtained because of the excellent protection of organic triplets by the glassy hydrophobic cores. The afterglow nanostructures exhibit intriguing afterglow mechanism modulated by the types of luminescent emitters, controlled dimensions and morphologies by the structural parameters of the block copolymers.","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 11","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141192624","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

Photochemical Vs Thermal Acid Catalysed Cyclization of Cannabigerol (CBG): An Unexpected Selectivity 光化学与热酸催化的大麻萜醇（CBG）环化：意想不到的选择性

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-05-31 DOI: 10.1002/cptc.202400157

Arianna Bini, Prof. Mariella Mella, Prof. Daniele Merli, Prof. Stefano Protti

引用次数: 0

Exploring the Critical Factors Toward Spectrally Stable Mixed-Halide Blue Perovskite LEDs 探索实现光谱稳定的混合卤化物蓝色 Perovskite LED 的关键因素

IF 3 4区化学

ChemPhotoChem Pub Date : 2024-05-31 DOI: 10.1002/cptc.202400019

Lulu Wei, Shubing Tian, Mingze Sun, Ruili Song, Yunhu Wang, Dr. Mingming Zhang, Prof. Lei Wang, Prof. Zhanhua Wei, Prof. Jun Xing

引用次数: 0