期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 9, 期 11, 页码 3215-3220出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201402779
关键词
charge transfer; enols; fluorescence; hydrogen bonds; photophysics
资金
- National Natural Science Foundation of China [21274016, 21374013]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13R06]
- Program for DUT Innovative Research Team [DUT2013TB07]
- Fundamental Research Funds for the Central Universities [DUT13LK06, DUT12ZD211]
The synthesis and photophysics of two novel 2-(2'-hydroxyphenyl)-benzothiazole (HBT) derivatives are presented. The electron-withdrawing trifluoromethyl (CF3) group in compound 1 facilitates the deprotonation of the phenolic hydroxy group. Well-resolved triple fluorescence from the enol, keto, and phenolic anion, which ranges from 350 to 600 nm, was detected for 1 in ethanol, which marks the first time triple fluorescence from an excited-state intramolecular proton transfer (ESIPT) molecule has been reported. Both triphenylamine and CF3 were introduced into derivative 2. Intramolecular charge transfer and the red-edge effect resulted in the bathochromic shift of dual fluorescence of 2. Triple fluorescence was also observed for 2 in ethanol. In mixed acetonitrile and ethanol, pure white-light emission with CIE coordinates of (0.33, 0.33) and a quantum yield of 0.25 was achieved for 2. This work provides a new avenue for the rational design of an ESIPT molecule to achieve white-light generation under mild conditions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据