Hole transporting material, hole transporting layer, OLED display panel electronic device comprising the same

A hole transporting material, having a structure of formula (I),

• wherein L1 is selected from the group consisting of substituted or unsubstituted fluorenylene, and substituted or unsubstituted biphenylene;
• wherein the two benzene rings in substituted or unsubstituted fluorenylene, are connected with the two nitrogen atoms in formula (I);
• wherein the two benzene rings in substituted or unsubstituted biphenylene, are connected with the two nitrogen atoms in formula (I);
• L2, L3, L4 and L5 each is independently selected from the group consisting of substituted or unsubstituted fluorenyl, and substituted or unsubstituted biphenylyl;
• wherein L2, L3, L4 and L5 are connected with nitrogen atoms via benzene rings;
• wherein L2, L3, L4 and L5 in the structure of formula (I) meet:
• (1) L1 is substituted or unsubstituted fluorenylene, and/or
• (2) at least one of L2, L3, L4 and L5 is substituted or unsubstituted fluorenyl;
• wherein in the structure of formula (I), at least one hydrogen atom on at least one benzene ring is substituted by a non-hydrogen group, wherein the fluorenylene or fluorenyl is not deemed as being formed by substitution of at least one hydrogen atom on at least one benzene ring therein;
• and
• wherein the hole transporting material has a hole mobility of 9×10−5-5×10−4 cm2/Vs, and a solubility of 10 g/L or more in NMP at 25° C.