期刊
DYES AND PIGMENTS
卷 95, 期 2, 页码 236-243出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2012.04.008
关键词
Truxene; Thiophene; Structure; Photophysical properties; Charge-shift; Synthesis
资金
- Ph.D. Programs Foundation of Ministry of Education of China [20090204120033]
- Fundamental Research Funds for the Central Universities [Z109021106]
A series of symmetrical and asymmetrical (multi)branched truxene derivatives have been synthesized by incorporating different pi-conjugated functional groups to truxene. Linear absorption and single- and two-photon excited fluorescence properties of the obtained compounds were examined. The spectral data combining the results of theoretical calculation and the X-ray crystal structures demonstrate that the intramolecular charge transfer of the C-3-symmetric truxene-core compounds keep independence of every branch and shifts site-to-site upon excitation. The asymmetric molecule SN behaves the intramolecular excitation transfer between more than two energy levels, which maybe different from the symmetric ones. Meanwhile, the C-3-symmetric octupolar conformation and the C(sp(2)) = C(sp(2)) pi-linker are effective structural pattern for two-photon absorption compounds. (C) 2012 Elsevier Ltd. All rights reserved.
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