申请人:Nissan Chemical Industries, Ltd.
公开号:EP3147960A1
公开(公告)日:2017-03-29
A thin film that has high flatness and high charge transport properties and enables an organic EL element to achieve excellent luminance characteristics if applied thereto can be obtained by using a charge-transporting varnish which contains a charge-transporting substance, an organosilane compound that is composed of a polymer prepared in advance by subjecting an alkoxysilane compound to hydrolysis-condensation and having a weight average molecular weight of 500-10,000, and an organic solvent, said alkoxysilane compound containing at least one compound selected from among alkoxysilane compounds represented by formulae (1-1) and (1-2). SiR1(OR2)3 (1-1) SiR12(OR2)2 (1-2) (In the formulae, each R1 independently represents an alkyl group having 1-20 carbon atoms, which is substituted by Z1, or the like; each R2 independently represents an alkyl group having 1-20 carbon atoms, which may be substituted by Z3; and each of Z1 and Z3 represents a halogen atom or the like.)
通过使用含有电荷传输物质的电荷传输清漆,可以获得一种具有高平整度和高电荷传输特性的薄膜,如果将其应用于有机电致发光元件,可使其获得优异的亮度特性、有机硅烷化合物,该有机硅烷化合物由通过对烷氧基硅烷化合物进行水解-缩合预先制备的聚合物和有机溶剂组成,所述聚合物的平均分子量为 500-10000,所述烷氧基硅烷化合物含有至少一种从式(1-1)和(1-2)所代表的烷氧基硅烷化合物中选出的化合物。SiR1(OR2)3 (1-1) SiR12(OR2)2 (1-2) (在式中,每个 R1 独立地代表具有 1-20 个碳原子的烷基,该烷基被 Z1 或类似物取代;每个 R2 独立地代表具有 1-20 个碳原子的烷基,该烷基可被 Z3 取代;Z1 和 Z3 各自代表卤素原子或类似物)。