✦ LIBER ✦
Room-temperature triple proton transfer of 7-hydroxyquinoline and stabilization of its ground-state keto tautomer in a polymeric matrix
✍ Scribed by A. Douhal; R. Sastre
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 385 KB
- Volume
- 219
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
AbSlTilCt
'I-hydroxyquinoline (7HQ) dissolved in a solid poly( 2-hydroxyethylmethacrylate) (PHEMA) matrix shows dual fluorescence at room temperature: a blue one (376 nm) from enol forms and a green one (5 15 nm) from the keto tautomer. This isomer can be populated by an excited-state triple proton transfer in well-bridged complexes of 7HQ-PHEMA or by vertical excitation of the long-term stable keto tautomer in the ground state.