Controllable Secondary Through-Space Interaction and Clusteroluminescence  

作　　者：Zuping Xiong Jianyu Zhang Lei Wang Yuan Xie Yipu Wang Zujin Zhao Haoke Zhang Jing Zhi Sun Feihe Huang Ben Zhong Tang 

机构地区：[1]MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027 [2]Zhejiang-Israel Joint Laboratory of Self-Assembling Functional Materials,ZJU-Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311215 [3]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,Hong Kong [4]Center for AIE Research,College of Materials Science and Engineering,Shenzhen University,Shenzhen 518061 [5]State Key Laboratory of Luminescent Materials and Devices,Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates,South China University of Technology,Guangzhou 51064 [6]Centre of Healthcare Materials,Shaoxing Institute,Zhejiang University,Shaoxing 312000 [7]Stoddart Institute of Molecular Science,Department of Chemistry,Zhejiang University,Hangzhou 310058 [8]School of Science and Engineering,Shenzhen Institute of Aggregate Science and Technology,The Chinese University of Hong Kong,Shenzhen 518172

出　　处：《CCS Chemistry》2023年第12期2832-2844,共13页中国化学会会刊（英文）

基　　金：the National Science Foundation of China(grant no.22205197);the project funded by China Postdoctoral Science Foundation(grant no.2022M712721);the Youth Talent Excellence Program of ZJU-Hangzhou Global Scientific and Technological Innovation Center for their financial support.

摘　　要：Nonconjugated clusteroluminogens(CLgens),such as proteins and polystyrene,have become increasingly important in photophysics.They show many advantages over traditional conjugated dyes with fused aromatic rings in biological applications.However,CLgens have historically been unheeded because of their weak visible emissions in the aggregate state,namely clusteroluminescence(CL).Changing the electronic structures of CLgens by precisely regulating the intramolecular throughspace interaction(TSI)to improve their photophysical properties remains an enormous challenge.Herein,we propose a general strategy to construct a higher-level intramolecular TSI,namely secondary TSI constructed by the primary TSI and a TSI linker,in multi-aryl-substituted alkanes(MAAs).By introducing methyl and phenyl into 1,1,3,3-tetraphenylpropane,the modified MAAs show efficient CL with high luminescence quantum yield(-40%)and long emission wavelength(-530 nm).Then,comprehensive experiments and theoretical studies demonstrate that molecular rigidity and overlap of subunits play pivotal roles in improving these hierarchical TSIs.This work not only provides a feasible strategy to achieve controllable manipulation of hierarchical TSIs and CL but also establishes comprehensive TSI-based aggregate photophysics.

关 键 词：through-space interaction clusteroluminescence aggregation-induced emission ALKANES electronic structures aggregate photophysics 

分 类 号：O62[理学—有机化学]