Excited State Proton Transfer (ESPT) from Phenol to Nitrogen and Carbon in (2-Hydroxyphenyl)pyridines (CROSBI ID 123119)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Basarić, Nikola ; Wan, Peter
engleski
Excited State Proton Transfer (ESPT) from Phenol to Nitrogen and Carbon in (2-Hydroxyphenyl)pyridines
ESIPT and ESPT are the only photochemical deactivation pathways of the singlet excited states of 2-, 3- and 4-(2’ -hydroxyphenyl)pyridines (1a-c). Due to the existence of an intramolecular hydrogen bond in 2-(2’ -hydroxyphenyl)pyridine (1a), ESIPT leads only to protonation of the pyridine nitrogen. On the other hand, the singlet excited states of 3- and 4-(2’ -hydroxyphenyl)pyridine (1b, c) undergo protonation of both nitrogen and carbon atoms of the pyridine ring, via ESIPT or ESPT. The extent of ESIPT to carbon (as measured by extent of deuterium incorporation) can be controlled by the amount of water in the solvent system.
ESIPT; laser flash photolysis; photochemistry; proton transfer; phenoles; pyridines; quinone methides
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano
nije evidentirano