| 摘要 |
<p>A novel material having high hole-transporting ability and a high glass transition temperature and having long-lasting durability is obtained. A benzofluorene compound represented by formula (1) is used.
(In the formula, M is a substituted or unsubstituted aryl group having 6-40 carbon atoms or a substituted or unsubstituted heteroaryl group having 5-40 carbon atoms; Ar 1 to Ar 4 each independently is a substituted or unsubstituted aryl group having 6-40 carbon atoms or a substituted or unsubstituted heteroaryl group having 5-40 carbon atoms, provided that at least one of Ar 1 to Ar 4 is a substituent represented by any of the following formulae (2) to (5); and p is an integer of 0-2.)
(In the formulae, R 1 to R 4 each independently is a hydrogen atom, a halogen atom, a substituted or unsubstituted amino group, a linear, branched, or cyclic alkyl group, a linear, branched, or cyclic alkoxy group, a substituted or unsubstituted aryl group having 6-40 carbon atoms, or a substituted or unsubstituted aryloxy group having 6-40 carbon atoms, provided that R 1 and R 2 may be bonded to each other to form a ring.)</p> |
