R1 is a functional group in which the terminal is a vinyl group, epoxy group, styryl group, methacrylic group, acrylic group, amino group, ureido group, mercapto group, sulfide group or isocyanate group.

Group B consisting of halogen atom, alkyl group, alkenyl group, alkoxy group, hydroxyalkyl group, acyl group, oxo group, hydroxy group, and cyano group.

The aryl group represents a phenyl group, a naphthyl group, a phenanthrenyl group, a fluorenyl group, a triphenylenyl group, or a chrysenyl group.

Examples of Ar may include a naphthyl group, an anthracenyl group, a phenanthryl group, a naphthacenyl group, a pyrenyl group, a pentacenyl group, a perylenyl group, a fluorenyl group and a benzofluorenyl group.

R5a and R5b represent an alkyl group, an alkenyl group, a cycloalkyl group, a cycloalkenyl group, an aryl group, or a heterocyclic group.

Ra, Rb, and Rc are a hydrogen atom, alkyl group, alkenyl group, alkynyl group, aryl group, cyano group, halogen group, or heterocyclic group.

L is a monovalent radical, such as, for example, an amino group, an N-substituted amino group, a β-hydroxylamino group, a hydrazido group, an alkoxy group, a thioalkoxy group, an aminoxy group, or an oximato group.

R1 and R2 each independently represents a hydrogen atom, an alkyl group, an alkenyl group, an aryl group, an acyl group, an aryloxycarbonyl group, an alkoxycarbonyl group, or a carbamoyl group.

The monomeric unit preferably includes a functional group such as a carboxylate group, a sulfonate group an alkoxide, a phosphate or a phosphonate group.

R3 represents an alkyl group, a cycloalkyl group, an aryl group, or an aralkyl group.

The functional group is composed of one or more groups selected from the group consisting of an amino group, an imino group, a pyridyl group, a phosphino group, a thiol group and a hydrocarbyloxysilyl group.

R1 and R3 represent a hydrogen atom, an alkyl group, an alkenyl group, a cycloalkyl group, a cycloalkenyl group, or an aryl group.

R1 and R2 are a hydrogen atom, alkyl group, alkenyl group, alkynyl group, aryl group, or heterocyclic group.

The aryl group and the heterocyclic group each may have at least one of an alkyl group, an aralkyl group, an aryl group, a heterocyclic group, an amino group, and an alkoxy group as a substituent.

R'nSi(OR)4-n (1) In the formula, R' represents a vinyl group, an amino group, an epoxy group, a chlorine group, a methacryloxy group, an acryloxy group or an isocyanate group; R represents an alkyl group; and n represents the number of substitution.