期刊
MATERIALS LETTERS
卷 307, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2021.130959
关键词
Chromophores; Red-shift; High thermal stability; Organic; Optical materials and properties
资金
- National Natural Science Foundation of China [21704006]
- Foundation of Jilin Province Development and Reform Commission [2020C024-1]
- Natural Science Foundation of Jilin Province [20190201280JC]
Two novel second-order nonlinear optical (NLO) chromophores containing the thieno [2,3-b] indole (TI) group as a novel electron-donor were synthesized and investigated. These TI-based chromophores showed high thermal stability and good NLO activity. The chromophore A5 exhibited a narrow energy gap and large hyperpolarizability (beta) according to Density functional theory (DFT) calculations.
Tow novel second-order nonlinear optical (NLO) chromophores A4, A5 containing the thieno [2,3-b] indole (TI) group as a novel electron-donor, ethylene as a p-conjugated bridge and malononitrile, 2-(3-cyano-4-methyl-5phenyl-5-(trifluoromethyl) furan-2 (5H)-ylidene) malononitrile (CF3-TCF) as the acceptor have been synthesized and systematically investigated in this paper. These TI-based chromophores showed significantly high thermal stability. The UV-vis spectra indicated that the TI-based chromophores had a red-shift compared to the carbazole-based chromophores both in solid state and in solution. The HOMO-LUMO energy gaps and hyperpolarizability (beta) of the chromophore A5 is calculated by Density functional theory (DFT), it shows that A5 has a narrow energy gap and big beta. In short, the TI-based chromophore A5 we synthesized exhibited high thermal stability and good NLO activity.
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