Patent ID: 8663883

Claim:
A charge-transporting film comprising: a polymer of a compound represented by Formula (I): (Ra) n -Fa-Xa-Fa′-(Ra′) n ′ (I) wherein: Fa and Fa′ independently represent a charge-transporting sub-unit including an aromatic ring, Ra and Ra′ independently represent a —CH═CH 2 directly bonded to the aromatic ring of the charge-transporting sub-unit represented by Fa and Fa′ respectively or a group represented by Formula (a): Xa represents —CH 2 —CH 2 —, —CH 2 —O—CH 2 —, —C(═O)O—CH 2 —CH 2 —OC(═O)—, —CH 2 —O—CH 2 —CH 2 —O—CH 2 —, —CH 2 —O—(CH 2 —CH 2 —O) 2 —CH 2 —, —CH 2 —CH 2 —CH 2 —CH 2 —, or —CH 2 —S—CH 2 —, n and n′ independently represent an integer of 0 or more (wherein n and n′ are not simultaneously 0), and L represents a linking group which is represented by *—(CH 2 ) n″ —O—CH 2 — and which is bonded to the aromatic ring of the charge-transporting sub-unit represented by Fa and Fa′, wherein n″ is 1 or 2 and the linking group is bonded to the aromatic ring of the charge-transporting sub-unit with *.