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题名: A Single 2-(2 '-Hydroxyphenyl)benzothiazole Derivative Can Achieve Pure White-Light Emission
作者: Cheng, Jinling1, 2;  Liu, Di1;  Bao, Lijun1;  Xu, Kai1;  Yang, Yang2;  Han, Keli2
关键词: charge transfer ;  enols ;  fluorescence ;  hydrogen bonds ;  photophysics
刊名: CHEMISTRY-AN ASIAN JOURNAL
发表日期: 2014-11-01
DOI: 10.1002/asia.201402779
卷: 9, 期:11, 页:3215-3220
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: 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.
关键词[WOS]: INTRAMOLECULAR PROTON-TRANSFER ;  EMITTING DEVICES ;  ENERGY-TRANSFER ;  TRANSFER ESIPT ;  ELECTROLUMINESCENCE ;  PHOTOPHYSICS
语种: 英语
WOS记录号: WOS:000344332200024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145730
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Sch Chem, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China

Recommended Citation:
Cheng, Jinling,Liu, Di,Bao, Lijun,et al. A Single 2-(2 '-Hydroxyphenyl)benzothiazole Derivative Can Achieve Pure White-Light Emission[J]. CHEMISTRY-AN ASIAN JOURNAL,2014,9(11):3215-3220.
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