Patent ID: 7763727

Claim:
A compound represented by the general formula (3), wherein, in the formula, Z 2 and Z 3 each independently represent a tetravalent organic group constituting an unsubstituted naphthalene tetracarboxylic acid or dianhydride or a substituted naphthalene tetracarboxylic acid or dianhydride wherein the substituent is selected from the group consisting of alkyl group, alkoxy group, alkylthio group, aryl group, aryloxy group, arylthio group, halogenated alkyl group, halogen atom, carboxyl group, esterified carboxyl group, and cyano group; X 6 and X 7 each independently represent an oxygen atom, a sulfur atom or NR 0 (wherein R 0 represents a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aralkyl group); when X 6 is a nitrogen atom, X 6 may be bonded to R 1 for forming a ring structure; when X 7 is a nitrogen atom, X 7 may be bonded to R 2 for forming a ring structure; and R 1 and R 2 each independently represent a hydrogen atom, a substituted or unsubstituted aryl group a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aralkyl group or a group selected from the group consisting of the following general formula (4), wherein, in the formula, R 3 represents a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted cycloalkyl group.