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

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.