Patent ID: 7597955

Claim:
An organic compound represented by the following general formula (5): wherein R 15 , R 16 , R 17 , R 18 , R 19 , and R 20 is independently selected from a hydrogen atom, a halogen atom, a linear alkyl group having 1-10 carbon atoms (wherein one methylene group or two or more non-adjacent methylene groups of the alkyl group may be replaced by —O—, and a hydrogen atom in the alkyl group may be replaced by a fluorine atom), an unsubstituted or substituted phenyl group, and an unsubstituted or substituted naphthyl group, with the proviso that at least one of R 15 , R 16 , R 17 , R 18 , R 19 , and R 20 is a partial structure comprising an indole ring represented by the following general formula (1) and at least another of R 15 , R 16 , R 17 , R 18 , R 19 , and R 20 is a partial structure comprising a carbazole ring represented by the following general formula (2) wherein A 1 represents an unsubstituted or substituted phenylene group; A 2 represents a single bond or an unsubstituted or substituted phenylene group; and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , and R 14 are independently selected from a hydrogen atom, a halogen atom, a linear alkyl group having 1-10 carbon atoms (wherein one methylene group or two or more non-adjacent methylene groups of the alkyl group may be replaced by —O—, and a hydrogen atom in the alkyl group may be replaced by a fluorine atom), an unsubstituted or substituted phenyl group, and an unsubstituted or substituted naphthyl group.