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Phenylquinone Sensitizers for Polyvinyl Carbazole

IP.com Disclosure Number: IPCOM000095186D
Original Publication Date: 1965-Oct-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 23K

Publishing Venue

IBM

Related People

Ong, J: AUTHOR [+2]

Abstract

The addition of sensitizers to organic photoconductors, such as polyvinyl carbazole, increases the photoconductivity and, hence, the electrophotographic speed. Two groups of compounds which are well suited for sensitizing organic photoconductors are as follows. (Image Omitted)

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Phenylquinone Sensitizers for Polyvinyl Carbazole

The addition of sensitizers to organic photoconductors, such as polyvinyl carbazole, increases the photoconductivity and, hence, the electrophotographic speed. Two groups of compounds which are well suited for sensitizing organic photoconductors are as follows.

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R is selected from the group consisting of hydrogen, halogen and aryl substituents. X is selected from the group consisting of nitro, cyano, acetyl, and halogen substituents. Also,

(Image Omitted)

Here n is a number from 1 to 5. X is selected from the group consisting of nitro, cyano, acetyl, and halogen substituents.

The group I compounds, or the phenylquinones, vary in sensitizing ability in the following descending order: diphenylquinone, phenylquinone, p- biphenylquinone, phenylathracene quinone, anthraquinone, benzoquinone. When the phenylquinones are substituted, their sensitizing ability varies depending on the substituent in the following descending order: nitro, cyano, acetyl, chloro, and methyl. Also, the para substituted phenylquinones are more effective than equivalent ortho substituted phenylquinones. One of the compounds of group II, i. e., --1 (N-carbazolyl)-3-(p-benzoquinonyl) propane, is
1.5 to 3 times better than an equivalent molar concentration phenylquinone when used to sensitize polyvinyl carbazole.

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