Charge transporting material and method of preparing charge tran

Details Charge transporting material and method of preparing charge tran Charge transporting material and method of preparing charge tran

1997-11-17

1999-10-12

Kopec, Mark

Compositions

Electrically conductive or emissive compositions

524 81, 428407, H01B 112, H01B 120, B32B 500

Patent

active

059650630

ABSTRACT:
Disclosed are a charge transporting material useful as a material for organic electronic devices such as an electrophotographic photoreceptor, an organic EL device, and an organic solar cell and a process for the preparation of charge transporting fine particles. The charge transporting material comprises charge transporting fine particles formed with a charge transporting organic compound as an essential component, said charge transporting organic compound being selected from high molecular compounds and low molecular compounds, each having a positive hole transporting property or electron transporting property. The fine particles are granulated by emulsion dispersion, with a preferred average particle size of 0.01 to 50 .mu.m, and particle size distribution of 1.0 to 2.0 in terms of the square root of the ratio of 90% average particle size to 10% average particle size of the total volume or total number of the fine particles. At least one portion of the surface of the fine particles may be covered with a second compound which may react with said charge transporting compound.

REFERENCES:
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patent: 5235104 (1993-08-01), Yamada et al.
patent: 5567355 (1996-10-01), Wessling et al.
patent: 5720903 (1998-02-01), Wessling et al.
patent: 5736284 (1998-04-01), Kobayashi et al.
Murti, D.K. et al. "Charge Transport Polymers Based on Triphenylamine and Tetraphenylbenzidine Moieties."
Proceedings of the Sixth International Congress on Advances in Non-Impact Printing Technologies, Oct. 1990, pp. 306-311.

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