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.)
得到了一种具有高孔传输能力和高
玻璃化转变温度以及长久耐久性的新型材料。使用了一个由式(1)表示的苯并
芴化合物。(在式中,M是具有6-40个碳原子的取代或未取代芳基团或具有5-40个碳原子的取代或未取代杂环芳基团;Ar1到Ar4各自独立地是具有6-40个碳原子的取代或未取代芳基团或具有5-40个碳原子的取代或未取代杂环芳基团,但至少其中一个是由以下任一式(2)至(5)表示的取代基;p是0-2的整数。)(在式中,R1到R4各自独立地是氢原子、卤素原子、取代或未取代
氨基、线性、支链或环状烷基、线性、支链或环状烷氧基、具有6-40个碳原子的取代或未取代芳基团或具有6-40个碳原子的取代或未取代芳氧基团,但R1和R2可以连接在一起形成环。)