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Highly fluorescent response of 4-(2,5-dimethylthiophen-3-yl)-2- hydroxyphenylbenzothiazole toward BF3•Et2O and Zn2+.
- Source :
-
Molecular Crystals & Liquid Crystals . 2018, Vol. 662 Issue 1, p132-138. 7p. - Publication Year :
- 2018
-
Abstract
- In this contribution, the emission response of 4-(2,5-dimethylthiophen-3-yl)-2-(2-hydroxy- phenyl)benzothiazole (THBT) was investigated in detail. The experimental shows that Zn2+ could induce fluorescence increasing in tetrahydrofuran (THF). Especially, the quenched emission of THBT was significantly enhanced with 0.76 quantum yield. Due to the coordination of Zn2+, the excited state intramolecular proto transfer (ESIPT) was inhibited and leads to emission quenching correspondingly. The strong emission could ascribe to the Zn-THBT complex. As well, the addition of BF3·Et2O also could form fluorine-boron complex and inhibit ESIPT effect. Additionally, the BF complex is also a strong blue emitter. Therefore, strong blue emission upon BF3·Et2O addition to THBT in dioxane was found. The possible coordinating mechanisms of THBT coordinate with Zn2+ and BF3·Et2O were given. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15421406
- Volume :
- 662
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Molecular Crystals & Liquid Crystals
- Publication Type :
- Academic Journal
- Accession number :
- 129976568
- Full Text :
- https://doi.org/10.1080/15421406.2018.1466531