Electron transfer reactions of quinone derivatives (QDs) with poly(4-v
inylpyridine) gels in organic solvents were studied by means of ESR sp
ectroscopy. Formation of radical anions from the QDs and cations from
polymeric base was established. The QD(2-) anions resulting from dispr
oportionation of the QD(.-) radical anions produce additional cross-li
nks in the gel, causing it to collapse. Sulfhydryl compounds complexed
with the gel prevent formation of the ESR signals when the QDs are su
pplied into the solvent surrounding the gel under oxygen-free conditio
ns. Oxidation of the sulfhydryl compound adsorbed onto the gel results
in its desorption, enabling the gel to react with the QD, producing E
SR signals. Gels modified with the sulfhydryl compounds collapse in re
sponse to the supply of oxygen into their liquid environment.