Excited-state proton transfer spectroscopy of 3-hydroxypicolinamide
Journal
Chemical Physics Letters
Journal Volume
161
Journal Issue
4-5
Pages
361-367
Date Issued
1989
Author(s)
Abstract
A rapid intramolecular proton transfer is observed in the lowest excited singlet state of 3-hydroxypicolinamide. A temperature-independent tautomerization rate of > 2×1012s-1 is deduced from steady-state and picosecond fluorescence measurements at both room temperature and 77 K. The lack of any detectable temperature dependence is indicative of a negligible barrier to tautomerization. © 1989.
Type
journal article