Solvent-Dependent Photoinduced Tautomerization of 2-(2‘-Hydroxyphenyl)benzoxazole
✍ Scribed by Abou-Zied, Osama K.; Jimenez, Ralph; Thompson, Elizabeth H. Z.; Millar, David P.; Romesberg, Floyd E.
- Book ID
- 126994630
- Publisher
- American Chemical Society
- Year
- 2002
- Tongue
- English
- Weight
- 98 KB
- Volume
- 106
- Category
- Article
- ISSN
- 1089-5639
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## Abstract 2‐(3,4,5,6‐Tetrafluoro‐2‐hydroxyphenyl)benzoxazole (**2**) emits the long wavelength fluorescence around 500 nm in nonpolar solvent __via__ the intramolecular proton transfer process in the excited state of **2** (enol‐form) and also emits the intermediate wavelength fluorescence around
The transient T-T absorption spectra of 2-(2'-hydroxyphenyl) benzoxazole (HBO) have been measured in liquid polar solvents and in polymethylmathacrylate. In non-protonic polar solvents the main T-T absorption is from the keto form of the compound (3K \* ). With a triplet sensitizer the compound just