EFFECT OF POLYMER ADDITIVES ON MAGNETIC MODULATION OF THE YIELD OF PRODUCTS OF RECOMBINATION OF TRIPLET RADICAL-ION PAIRS IN ELECTRON PHOTOTRANSFER BETWEEN N,N-DIMETHYLANILINE AND PYRENE .1. POLYACRYLAMIDE IN ETHYLENE-GLYCOL
Aa. Vedeneev et al., EFFECT OF POLYMER ADDITIVES ON MAGNETIC MODULATION OF THE YIELD OF PRODUCTS OF RECOMBINATION OF TRIPLET RADICAL-ION PAIRS IN ELECTRON PHOTOTRANSFER BETWEEN N,N-DIMETHYLANILINE AND PYRENE .1. POLYACRYLAMIDE IN ETHYLENE-GLYCOL, Bulletin of the Russian Academy of Sciences, Division of Chemical Sciences, 41(9), 1992, pp. 1597-1602
The effect of a magnetic field on the yield of products of recombinati
on of triplet radical ion pairs in phototransfer of an electron betwee
n NN-dimethylaniline and pyrene in ethylene glycol was investigated by
laser strobe fluorometry. It was found that addition of a flexible-ch
ain, linear polymer, polyacrylamide (PAAm), to the solution decreases
the magnetic field effect (MFE) for concentrations higher than 130-140
g/liter. A linear correlation was established between the MFE and tra
nslational mobility of the reagents. A similar correlation was obtaine
d for MFE in a viscous homogeneous liquid. A conclusion was drawn conc
erning the absence of a specific effect of PAAm on the cage effect bas
ed on the agreement of these correlations.