Naphthalenedicarboximide derivative and electrophotographic photosensitive member
A naphthalenedicarboximide derivative is represented by general formula (1) or (2). In general formulas (1) and (2), R 1 , R 2 , and R 3 each represent, independently of one another, an alkyl group which has a carbon number from 1 to 10 and which may have an aryl group having a carbon number from 6 to 14, an aryl group which has a carbon number from 6 to 14 and which may have an alkyl group having a carbon number from 1 to 10, a cycloalkyl group having a carbon number from 3 to 10, or an alkoxy group having a carbon number from 1 to 6, and m represents an integer from 0 to 4. When m represents an integer of 2 or more, chemical groups R 2 may each be the same or may each be different.
1. A naphthalenedicarboximide derivative represented by general formula (1) or (2) shown below
wherein in the general formulas (1) and (2),
R 1 and R 3 each represent, independently of one another, an alkyl group having a carbon number of at least 5 and no greater than 10 or an alkyl group which has a carbon number of at least 1 and no greater than 6 and which is substituted with a phenyl group,
R 2 represents an alkyl group having a carbon number of at least 1 and no greater than 3, and
m represents 0 or 1.
2. The naphthalenedicarboximide derivative according to claim 1 , wherein
in the general formulas (1) and (2),
R 1 and R 3 each represent an alkyl group which has a carbon number of at least 1 and no greater than 6 and which is substituted with a phenyl group.
3. The naphthalenedicarboximide derivative according to claim 1 ,
represented by chemical formula (1-1), (1-2), (1-3), (1-4), or (2-1) shown below
4. An electrophotographic photosensitive member, comprising
a conductive substrate and a photosensitive layer,
wherein the photosensitive layer contains the naphthalenedicarboximide derivative according to claim 1 .
5. The electrophotographic photosensitive member according to claim 4 , wherein
the photosensitive layer is a single-layer photosensitive layer having a single layer,
the single-layer photosensitive layer further contains a charge generating material, and
the charge generating material includes X-form metal-free phthalocyanine or Y-form titanyl phthalocyanine.
6. The electrophotographic photosensitive member according to claim 4 , wherein
the photosensitive layer further contains a hole transport material, and
the hole transport material includes a compound represented by chemical formula (HT-1) shown below