Abstract
Multifunctional polymeric photosensitizers were prepared by partial substitution reaction of poly(p-(chloromethyl)styrene) or insoluble chloromethylated polystyrene bead with potassium 4-nitro-1-naphtaxide or 4-nitrophenoxide using a phase transfer catalyst followed by an addition reaction of tertiary amines or phosphines on the remaining chloromethyl groups. The rates of the photochemical valence isomerization of potassium 3-phenyl-2,5-norbornadiene-2-carboxylate (PNC) in the presence of these photosensitizers were significantly higher than those of PNC with low molecular weight photosensitizers in methanol.
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