Patent ID: 7781050

Claim:
A polymer film obtained by polymerization of a cucurbituril derivative represented by the following formula 1: wherein X is O, S, or NH; A 1 and A 2 are each independently OR, SR, or NHR where R is an unsubstituted or substituted alkenyl group of C2-C20 with an unsaturated bond end; and n is an integer from 4 to 20, and wherein the C═X group of the cucurbituril derivative binds with Y of a substrate represented by the following formula 2: wherein M is Au, Ag, SiO 2 , or SiOH; X′ is each independently S, (CH 3 O) 3 —Si—, (CH 3 CH 2 ) 3 —Si—, SO 2 − , or CO 2 − ; and Y is each independently an alkyl group of C2-C30 end-substituted by —N + (R′)(R″)(R″) or —N(R′)(R″) where R′, R″, and R″ are each independently hydrogen or an alkyl group of C1-C20.