Triphenylamine derivative

A derivative, triphenylamine technology, applied in the field of triphenylamine derivatives, can solve problems such as image defects and dielectric breakdown, and achieve the effects of less sensitivity reduction, low residual potential, and excellent durability

Inactive Publication Date: 2013-03-06
HODOGOYA CHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the photosensitive layer contains a portion where crystals are precipitated or contains pinholes, dielectric breakdown occurs at that portion, which can cause image defects when an image is formed by electrophotography

Method used

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Experimental program
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preparation example Construction

[0190]

[0191] The triphenylamine derivative of the present invention described above can be synthesized by using a triphenylamine compound represented by the following general formula (4) as a starting material.

[0192]

[0193] In the above general formula (4), R 1 to R 7 , k and l are as defined in general formula (1).

[0194] The aforementioned triphenylamine compound is known, for example, as disclosed in JP-A-9-292723 (Patent Document 10). The triphenylamine derivative represented by the above-mentioned general formula (1) of the present invention passes the group X 1 Introducing a triphenylamine compound followed by introducing the group X into it 2 to prepare.

[0195] (group X 1 introduction)

[0196] In order to group the group X 1 Introduce in the triphenylamine compound of general formula (4), at first, carbonyl (formyl and ketone group) is introduced into the benzene ring that is bonded to the N atom of above-mentioned compound, thereby synthesizes ...

Embodiment

[0374] The present invention will now be specifically described by means of examples, by which, however, the present invention is by no means limited.

Synthetic example 1

[0375] [Synthesis Example 1 (Synthesis of Example Compound 1)]

[0376] A compound represented by the following structural formula (16) (see Patent Document 10) is provided as a raw material.

[0377]

[0378] 15 g of the above compound, 4.5 g of N,N-dimethylformamide, and 8 g of toluene were added to the reaction vessel, and 9 g of phosphoryl trichloride was further added dropwise thereto. The mixture was heated and stirred at 80° C. for 3 hours, and after being left to cool, 8 g of water was added dropwise thereto while cooling, followed by adding sodium carbonate to make the reaction solution alkaline.

[0379] Next, after heating at 60° C. for 3 hours, the reaction product was extracted with toluene. After washing with water and then with saturated brine, the solution was dried by using magnesium sulfate. Thereafter, the solvent was distilled off, thereby obtaining 14.4 g of a yellow solid formyl compound represented by the following structural formula (17).

[0380]...

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Abstract

Disclosed is a novel compound useful as a charge transporting agent which has a high carrier mobility and with which a photosensitive layer can be stably formed without causing crystal deposition or pinhole formation during the formation of the photosensitive layer and also an organic photoreceptor for electrophotography having a high sensitivity and a low residual potential can be produced. The compound is represented by general formula (1). In general formula (1), R1 to R7 each represent, for example, an alkyl group, X1 represents, for example, -CH=CH-CH=CH2, X2 represents, for example, -CH=CH2, and k and l each represent an integer of 0 to 4.

Description

technical field [0001] The present invention relates to a triphenylamine derivative having high carrier mobility, which is used as a charge transport agent for a photosensitive material for electrophotography. Background technique [0002] As inorganic photoconductive materials, amorphous silicon, amorphous selenium, cadmium sulfide, zinc oxide, and the like have hitherto been known. Inorganic photosensitive materials formed by using such photoconductive materials have been widely used in the field of electrophotography. However, selenium and cadmium sulfide are toxic substances and must be recycled. In addition, selenium crystallizes when heated and thus has poor heat resistance, while cadmium sulfide and zinc oxide have poor moisture resistance, and furthermore, zinc oxide has small printing durability. Therefore, it has become mainstream to use an organic photosensitive material including a conductive substrate on which an organic photosensitive layer containing a charg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/54G03G5/06
CPCC07C2102/10C07C211/60C07C217/94C07C211/57C07C2102/08C07C2103/18C07C2602/08C07C2602/10C07C2603/18G03G5/0542G03G5/0564G03G5/0571G03G5/0696G03G5/14708G03G5/14756G03G5/061473C07C211/54G03G5/06
Inventor 沼泽成能阿部胜美井原清贵中岛丈博小池真琴
Owner HODOGOYA CHEMICAL CO LTD
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