Polymer electron transport materials containing DCMI functional groups and application thereof

Abstract

The invention relates to a class of polymer electron transport materials containing DCMI functional groups and applications thereof, belonging to the technical field of organic photoconductive drums. The polymer electron transport material described in the present invention has a polystyrene structure as the main chain and a DCMI structure as the side chain, and the side chains are grafted on the main chain through ether bonds, which not only maintains the excellent electron transport ability of the DCMI structure, but also The compatibility and crystallization resistance of this type of material with the film-forming resin are greatly improved; at the same time, due to the existence of a longer alkane main chain, the solubility of this type of material in organic solvents is increased. The polymer electron transport material described in the present invention is suitable for the preparation of positively charged organic photoconductive drums of laser printers, and effectively overcomes the disadvantages of poor processability and easy separation from resin film layers of DCMI small molecule materials. Positively charged organic photoconductive drums have excellent photoelectric properties.

Description

technical field [0001] The invention relates to an electron transport material for an organic photoconductive drum, in particular to a new type of polymer electron transport material with a side chain containing 1,3-dicyanomethylene indane (DCMI) structure and its application, which belongs to the organic Photoconductive drum technical field. Background technique [0002] The organic photoconductive drum (OPC) is the core component of the laser printer / electrophotographic copier imaging system. Its working principle is: through corona charging or charging roller contact charging, the surface of the OPC can be charged with a layer of uniform charge (positive or negative charge) ;When the appropriate wavelength is irradiated on the surface of the OPC drum, the charge generating material is excited to generate positive and negative charge pairs, and under the action of the electric field, the positive and negative charge pairs are separated, and with the help of the charge tran...

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Problems solved by technology

[0006] Aiming at the problems of DCMI-like small molecule electron transport materials in positively charged organic photoconductive drums, one of the purposes of the present invention is to provide a class of macromolecular electron transport materials containing DCMI functional groups, which not only maintains the excellent structure of DCMI Electron transport capability, while greatly improving the solubility of the material in organic solvents and the compatibility with film-forming resins, with excellent hole transport and processability; the second purpose is to provide a high The application of molecular electron transport materials, when this material is applied to the preparation of positively charged organic photoconductive drums, can effectively overcome the shortcomings of DCMI small molecule materials such as poor processability and easy precipitation from the resin film layer, and the prepared positively charged Organic Photoconductor Drum with Excellent Photoelectric Performance

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