Spin-dependent deuterium isotope effect on the decay of the triplet state of a porphyrin free base. NH vibrations as promoting modes

Autor: Ponte Goncalves, A.M., Burgner, R.P.
Zdroj: Chemical Physics Letters; March 1977, Vol. 46 Issue: 3 p488-492, 5p
Abstrakt: The radiationless decay rate constants of the zero field spin sublevels of the lowest triplet state of meso-tetra (m-fluoro-phenyl)porphin free base are reported. The values for the base deuterated at the N—H positions are also given. Deuteration affects the fast in-plane spin state more than the slow in-plane spin state, (khα/kdα) : (khβ/kdβ= 0.75. The role of out-of-plane N—H vibrations as promoting modes is discussed in terms of the theory of Metz and co-workers.
Databáze: Supplemental Index