Triarylamine derivative and electrophotographic photosensitive member
A triarylamine derivative is represented by general formula (1) shown below. In general formula (1), R 1 , R 2 , and R 3 each represent, independently of one another, a halogen atom, an optionally substituted alkyl group having a carbon number of at least 1 and no greater than 6, an optionally substituted alkoxy group having a carbon number of at least 1 and no greater than 6, or an optionally substituted aryl group having a carbon number of at least 6 and no greater than 12. In general formula (1), o, p, and q each represent, independently of one another, an integer of at least 0 and no greater than 4, and m and n each represent, independently of one another, an integer of at least 1 and no greater than 2.
1. A triarylamine derivative represented by general formula (1) shown below,
where, in the general formula (1),
R 1 , R 2 , and R 3 each represent, independently of one another, a halogen atom, an optionally substituted alkyl group having a carbon number of at least 1 and no greater than 6, an optionally substituted alkoxy group having a carbon number of at least 1 and no greater than 6, or an optionally substituted aryl group having a carbon number of at least 6 and no greater than 12,
o, p, and q each represent, independently of one another, an integer of at least 0 and no greater than 4, and
m and n each represent, independently of one another, an integer of at least 1 and no greater than 2.
2. The triarylamine derivative according to claim 1 , wherein
the triarylamine derivative is any one of triarylamine derivatives HT-1 to HT-7 shown below.
3. The triarylamine derivative according to claim 1 , wherein
in the general formula (1), m represents 2 and n represents 1.
4. An electrophotographic photosensitive member comprising
a conductive substrate and a photosensitive layer, wherein
the photosensitive layer contains the triarylamine derivative according to claim 1 .
5. The electrophotographic photosensitive member according to claim 4 wherein
the photosensitive layer is a single-layer type photosensitive layer in which a charge generating material, a hole transport material, an electron transport material, and a binder resin are contained in the same layer as one another, and
the hole transport material includes the triarylamine derivative.
6. The electrophotographic photosensitive member according to claim 5 , wherein
the charge generating material includes Y-form titanyl phthalocyanine.
7. An electrophotographic photosensitive member comprising
a conductive substrate and a photosensitive layer, wherein
the photosensitive layer contains the triarylamine derivative according to claim 2 .
8. The electrophotographic photosensitive member according to claim 7 wherein
the photosensitive layer is a single-layer type photosensitive layer in which a charge generating material, a hole transport material, an electron transport material, and a binder resin are contained in the same layer as one another, and
the hole transport material includes the triarylamine derivative.
9. The electrophotographic photosensitive member according to claim 8 , wherein
the charge generating material includes Y-form titanyl phthalocyanine.
10. An electrophotographic photosensitive member comprising
a conductive substrate and a photosensitive layer, wherein
the photosensitive layer contains the triarylamine derivative according to claim 3 .
11. The electrophotographic photosensitive member according to claim 10 wherein
the photosensitive layer is a single-layer type photosensitive layer in which a charge generating material, a hole transport material, an electron transport material, and a binder resin are contained in the same layer as one another, and
the hole transport material includes the triarylamine derivative.
12. The electrophotographic photosensitive member according to claim 11 , wherein
the charge generating material includes Y-form titanyl phthalocyanine.