Fjord-Type AIEgens Based on Inherent Through-Space Conjugation  

作　　者：Ye-Qiang Han Yuan Xie Jianyu Zhang Shiyu Tan Haoke Zhang Ben Zhong Tang Jonathan L.Sessler Feihe Huang 

机构地区：[1]Stoddart Institute of Molecular Science,Department of Chemistry,Zhejiang University,Hangzhou 310058 [2]Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials,ZJU-Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311215 [3]MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310058 [4]Center for AIE Research,College of Materials Science and Engineering,Shenzhen University,Shenzhen 518061 [5]Department of Chemistry,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction,The Hong Kong University of Science and Technology,Kowloon,Hong Kong 999077 [6]School of Science and Engineering,Shenzhen Institute of Aggregate Science and Technology,The Chinese University of Hong Kong,Shenzhen(CUHK-Shenzhen),Guangzhou 518172 [7]Department of Chemistry,The University of Texas at Austin,Austin,Texas 78712-1224 [8]Green Catalysis Center and College of Chemistry,Zhengzhou University,Zhengzhou 450001

出　　处：《CCS Chemistry》2024年第7期1739-1747,共9页中国化学会会刊（英文）

基　　金：F.H.thanks National Key Research and Development Program of China (grant no.2021YFA0910100);National Natural Science Foundation of China (grant no.22035006);Zhejiang Provincial Natural Science Foundation of China (grant no.LD21B020001);the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study (grant no.SN-ZJU-SIAS-006);the Leading Innovation Team grant from Department of Science and Technology of Zhejiang Province (grant no.2022R01005)for financial support;H.Z.thanks the National Science Foundation of China (grant no.22205197)for support;Y.-Q.H.acknowledges support from the Chinese Postdoctoral Science Foundation (grant no.2022M712735);J.L.S.thanks the Robert A.Welch Foundation for chair support (grant no.F-0018).

摘　　要：Through-space conjugation(TSC)is a noncovalently electronic interaction that is emerging as a potential complement to through-bond conjugation(TBC)-based strategies for constructing luminescent materials.However,the design of efficient luminogens based on TSC is currently challenging due to a lack of established structure-property understanding.This is particularly true in the case of luminogens displaying aggregation-induced emission(AIE)effects.In this work,three terphenyl derivatives were prepared,and their photophysical properties were systemically studied.It was found that relative to the corresponding m-and p-linked analogues,the electronic interaction of TBC is weakened while the strength of TSC is commensurately enhanced in the constitutional isomer containing an o-linked fjordtype subunit.Within this set of luminogens,the presence of a fjord-type arrangement promotes a transformation from aggregation-caused quenching to AIE.Further investigations involving congeneric quaterphenyl and pentphenyl isomers support the universality of the fjord-type unit as a framework for synthesizing AIE-active luminogens(AIEgens)with inherent TSC.This work not only provides a novel set of AIEgens but also establishes the utility of TSC in controlling the photophysical properties of nonconventional and twisted luminogens.

关 键 词：fjord-type through-space conjugation through-bond conjugation aggregation-induced emission luminescence twisted conformation 

分 类 号：O62[理学—有机化学]