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- Title
New Electron-Donor/Acceptor-Substituted Tetraphenylethylenes: Aggregation-Induced Emission with Tunable Emission Color and Optical-Waveguide Behavior.
- Authors
Gu, Xinggui; Yao, Jingjing; Zhang, Guanxin; Zhang, Chuang; Yan, Yongli; Zhao, Yongsheng; Zhang, Deqing
- Abstract
Herein, we report the synthesis of new tetraphenylethylene derivatives 1- 5 that feature electron-donating (methoxy) and -accepting (dicyanomethane) groups as AIE-active molecules with tunable emission colors. The crystal structures of compounds 3 and 4 are described and the intermolecular interactions within their crystals agree with the observation that they exhibit strong solid-state emission. Compounds 1- 4 exhibit typical AIE behavior and their emission maxima are red-shifted in the order: 1< 2< 3< 4. Such red-shifts are ascribed to the fact that intramolecular interactions between the electron donor and the electron acceptor become stronger with increasing number of methoxy groups. The solid-state emission colors of compounds 1- 4 are successfully tuned from yellow-green to red. Compound 5 shows AIE behavior, but its emission is only slightly enhanced after aggregation and its solid shows a low quantum yield. Furthermore, microplates of compound 3 exhibit 2D optical-waveguide behavior.
- Subjects
ELECTRON donor-acceptor complexes; TETRAPHENYLETHYLENE; WAVEGUIDES; CRYSTALS; PARTICLES (Nuclear physics)
- Publication
Chemistry - An Asian Journal, 2013, Vol 8, Issue 10, p2362
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.201300451