| abstract |
There is provided a benzo[a]fluoranthene compound represented by the formula (I): wherein: at least one of R11 to R22 represents Rm represented by the formula (i): wherein: Ar1 represents any one of the following groups (i-a) to (i-c): (i-a) a substituted or unsubstituted phenylene group, (i-b) a substituted or unsubstituted monocyclic heterocyclic group, and (i-c) a composite substituent formed of two substituents selected from substituents corresponding to the groups (i-a) and (i-b); and X1 represents a substituted or unsubstituted alkyl group having 2 or more carbon atoms, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted alkynyl group; and R11 to R22 none of which is represented by Rm each represent a hydrogen atom, a halogen atom or the like, and R11 to R22 none of which is represented by Rm may be identical to or different from each other. |