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US 6,476,184 B1Granted
Aromatic poly(1,3,4-heterodiazoles) for use in optical devices, especially electroluminescent components
AssigneeFraunhofer-Gesellschaft zur Forderung der Angewardten Forschung E.V.
InventorsSilvia Janietz, Armin Wedel
Life of this patent
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Abstract
Aromatic poly(1,3,4-heterodiazoles) include from 100 to 1,000 repeating units selected from the group consisting of in which R1, R2, R3 and R4 may be identical or different and are each an alkyl, alkoxy, phenyl, phenoxy or thiophenol group and X is S, O or N-phenyl, for use in optical devices, especially electroluminescent components.
Claims19
Aromatic poly(1 ,3,4-heterodiazole) comprising from 100 to 1,000 repeating units selected from the group consisting of
- in which R1, R2, R3 and R4 are identical or different relative to each other and are each an alkyl, alkoxy, phenyl, phenoxy or thiophenol group and wherein X is S, O or N-phenyl.
Dependencies are inferred from the claim text.