Open AccessStudy of Electron Transfer between Amines and Biologically Active 4 - Aryloxymethylcoumarin
Author(s) -
U. Raghavendra
Publication year - 2016
Publication title -
mapana journal of sciences
Language(s) - English
Resource type - Journals
ISSN - 0975-3303
DOI - 10.12723/mjs.36.3
Subject(s) - electron transfer , acetonitrile , quenching (fluorescence) , chemistry , solvent , marcus theory , solvent effects , electron , energy transfer , photochemistry , coumarin , molecule , computational chemistry , chemical physics , reaction rate constant , fluorescence , organic chemistry , kinetics , physics , quantum mechanics
Electron transfer from aliphatic and aromatic amines to biologically active 4-aryloxymethyl coumarin1-(4- iodophenoxymethyl)-benzo[ f ]coumarin (1IPMBC) has been investigated in acetonitrile solvent. The variation of quenching rate parameter with reduction potential of amines indicates the electron transfer from amines to investigated coumarin molecule.Experimentally determined values of quenching rate parameter k q are well correlated with the standard free energy changes ( ∆G 0 ) within the framework of Marcus electron transfer theory. In the investigatedsystems,solvent reorganization energy appears to play a major role in governing electron transfer dynamics.