Organic electroluminescent device and process for producing the

Details Organic electroluminescent device and process for producing the Organic electroluminescent device and process for producing the

1995-09-11

2000-11-07

Yamnitzky, Marie

Stock material or miscellaneous articles

Composite

Of inorganic material

428917, 313504, 313506, 427 66, 427 70, H05B 3300, B05D 500

Patent

active

061434337

ABSTRACT:
In a first aspect, an organic electroluminescent device having an electroluminescent layer and/or a charge injecting/transporting layer formed out of a thin film of organic polymers of network structure which are excellent in heat resistance and durability, e.g., polyoxadiazoles is obtained by conducting a vapor deposition polymerization of a bifunctional monomer, a polyfunctional monomer of 3 or higher in functionality or a mixture of the polyfunctional monomer and bifunctional monomer and heating the resultant polymer in vacuum or an inert gas. In another aspect, an organic electroluminescent device having an electroluminescent layer and/or a charge injecting/transporting layer formed out of a thin film of polyoxadiazoles is produced without the formation of hydrogen halides (acids) as by-products by performing a vapor deposition polymerization of a monomer having two carboxylic acid halide groups and a monomer having two silylated carbohydrazide groups and heating the resultant polymer in vacuum or an inert gas.

REFERENCES:
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English-language Abstract of Japanese Publication 54064299 (May 23, 1979).
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English-language Abstract of Japanese Publication 4002096 (Jan. 7, 1992).
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Yamaguchi et al., "New Class of Electron Acceptors Having High Polymer Dispersibility, Unsymmetrically Substituted Diphenoquinones, and Their Application as Electron Transport Materials," Chem. Mater., vol. 3, No. 4, pp. 709-714 (1991). (no month).
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Database WPI, Section Ch, Week 9551, Derwent Publications Ltd., London, GB; Class A26, AN 95-401242, XP002004484 & JP-A-07 278 536, Oct. 24, 1995 *Abstract*.

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