期刊
NEW JOURNAL OF CHEMISTRY
卷 39, 期 2, 页码 1038-1044出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nj01653j
关键词
-
资金
- National Natural Science Foundation of China [1110 4284, 61101054]
Two chromophores C1 and C2 based on a fluorene electron donor with different p-electron bridges and the same electron acceptor have been synthesized and systematically characterized using NMR, MS and UV-vis absorption spectra. The energy gap between the ground state and the excited state and molecular nonlinearity were studied using UV-vis absorption spectroscopy, Density Functional Theory calculations and cyclic voltammetry measurements. The different properties between C1 and C2 were systematically compared. The results showed that C2 had a better performance than C1. The electrooptic coefficient of a poled film containing 25 wt% of C2 doped in amorphous polycarbonate afforded a value of 40 pm V-1 at 1310 nm. In addition, the excellent thermostability of C2 made itself a favourable candidate for practical application.
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