화학공학소재연구정보센터
Journal of Polymer Science Part A: Polymer Chemistry, Vol.38, No.20, 3828-3838, 2000
Pendent polymers of 1-methyl-2-oxo-4,5-dicyanoimidazole and their electrochemical properties
The electron accepting 1-methyl-4,5-dicyanoimidazole group was attached to vinyl polymers, via an alkoxy link, by nucleophilic aromatic substitution (NAS) of 1-methyl-2-fluoro-4,5-dicyanoimidazole (1) with poly(vinyl alcohol), or conventional polymerizations of vinyl monomers containing 1-methyl-2-oxo-4,5-dicyanoimidazole. The cyclic voltammetry (CV) studies show that monomeric and oligomeric model compounds sue electrochemically quasi-reversible and the degree of reversibility decreases as dicyanoimidazoles become more proximate within a molecule. On the other hand, the polymers show much less reversible reduction waves at -2.6 similar to-2.7 V vs Ag/Ag+, suggesting that there are chemical reactions among the pendent groups reduced at relatively high potential.