Patent ID: 7994228

Claim:
An ion-pair charge-transfer complex polymer, wherein the acceptor is a substituted bipyridinium cation expressed by the general formula (I) below: wherein In the formula (I), X represents a group bonded at the 4- or 2-position relative to the nitrogen atoms of the bipyridinium group and selected from the group consisting of phenyl, biphenyl, thienyl, bithienyl, terthienyl, furyl, fluorenyl, pyrenyl, perylenyl, and vinyl groups, or X may not be present so that the pyridinium groups are directly connected to each other; and Z represents a polymer from the ring-opening polymerization of an oxazoline derivative expressed by the general formula (II) below, or a polymer from the addition polymerization of a vinylether derivative expressed by the general formula (III) below or an indene derivative expressed by the general formula (IV) below; wherein In the formula (II) R 1 represents a fused ring or non-fused ring functional group (including a substituted functional group) of one through three five-membered or six-membered rings (including heterocyclic rings) connected to each other, or an alkyl group (including a substituted alkyl group) having one through three carbon atoms, in the formula (III) R 2 represents a bulky aliphatic polycyclic functional group including adamantil group or tricyclodecyl group, and in the formula (IV) R 3 represents hydrogen atom, methyl group or ethyl group.