Affiliation:
1. School of Chemistry and Chemical Engineering Harbin Institute of Technology No. 92, Xidazhi Street, Nangang District Harbin 150001 China
2. School of Energy Science and Engineering Harbin Institute of Technology Harbin Heilongjiang 150001 China
3. Standardization Research Institute of China North Industries Group Corporation Limited Beijing 100089 China
4. Wenzhou Institute University of Chinese Academy of Sciences Wenzhou 325000 China
5. Department of Applied Chemistry, Institute of Molecular Science and Center for Interdisciplinary Molecular Science National Chiao‐Tung University Hsinchu 30050 Taiwan
6. Institute of Atomic and Molecular Sciences Academia Sinica Taipei Taiwan
Abstract
AbstractSince the concept of aggregation‐induced emission (AIE) was proposed by Benzhong Tang's research group in 2001, the exploration of the mechanism of AIE and the development of new high‐performance AIE materials have been the focus and goal of this field. On the basis of a large number of experiment results, AIE mechanism has been well explained by lots of works, such as restricted intramolecular motion (RIM), J‐aggregate et al. As tetraphenylethlene (TPE) molecules are stacked, the rotation of the benzene ring rotor is blocked, and the energy attenuation is released in the form of radiation, showing the AIE effect. In order to further explore the AIE effect of TPE, we performed electronic structure, spectrum simulation, and AIE mechanism calculations of the anthryl‐tetraphenylethene (TPE‐an) monomer and dimer in the gas phase, tetrahydrofuran (THF), and aqueous solutions at the B3LYP/6‐31G** level. The calculation results show that TPE‐an molecule is in a propeller‐like configuration, and its fluorescence intensity is weak; compared with the monomer, the fluorescence intensity of the dimer increases by 87% in aqueous solution; the fluorescence intensity in the gas phase, THF solution, and aqueous solution gradually enhances with the increase of the degree of aggregation, which are consistent with the experimental results. The enhancement of fluorescence intensity is caused by the change of molecular structure caused by aggregation. This detailed AIE luminescence mechanism will provide theoretical guidance for AIE material design.
Funder
National Natural Science Foundation of China
Wenzhou Institute of Biomaterials and Engineering
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献