Solvent-mediated proton transfer. The roles of solvent structure and dynamics on the excited-state tautomerization of 7-azaindole/alcohol complexes

✍ Scribed by Dale McMorrow; Thijs J. Aartsma

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 496 KB
• Volume: 125
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(86)87103-2

✦ Synopsis

The time profile of the 7-azaindole tautomer emission in alcohol solvents consists of a superposition of two components with a different rise time. These observations are interpreted m terms of competitive hydrogen bonding leading to a ground-state equilibrium between different conformations of solute-solvent complexes. Cyclically hydrogen-bonded complexes give rise to instantaneous proton transfer. while other configurations exhibit a much slower fluorescence response.