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Polymerfarbstoff und Verfahren zu dessen Herstellung sowie deren Verwendung in Leuchtdioden und anderen optischen Bauelementen

New polymer dyes used in organic optical device, e.g. red light-emitting diode, are 4-dicyanomethylene-pyran compounds with amino-styryl group(s) substituted by polymer, e.g. polyester, polyamide, polyurea or polyurethane.
 
: Krueger, H.; Fischer, B.; Janietz, S.; Wedel, A.; Wahl, J.

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DE 2001-10141866 A: 20010827
DE 2001-10141866 A: 20010827
EP 2002-796163 AW: 20020711
WO 2002-EP7721 A: 20020711
DE 10141866 A1: 20030327
EP 1421154 A1: 20040526
C09B0023
C09K0011
German
Patent, Electronic Publication
Fraunhofer IAP ()

Abstract
Die vorliegende Erfindung betrifft Polymerfarbstoffe auf der Basis von Dicyanomethylen (DCM) sowie dessen Herstellung. Diese Polymerfarbstoffe finden Verwendung als rot-emittierende Schichten in organischen, optischen Bauelementen, insbesondere in Leuchtdioden.

 

WO2003018711 A UPAB: 20030723 NOVELTY - New polymer dyes are based on a 4-dicyanomethylene-pyran compound (I), which has a 4-N-(polymer)-amino-styryl substituent in the 2- and/or 6-position(s), in which the polymer skeleton is e.g. polyester, polyamide, polyurea or polyurethane. DETAILED DESCRIPTION - New polymer dyes are based on a 4-dicyanomethylene-pyran compound of formula (I); R2, R3 = a group of formula (II) in at least one case, otherwise H, linear, branched or cyclic 1-20 C alkyl or alkoxy or aryl: R1, R4, R5, R6, R7 = H or linear, branched or cyclic 1-20 C alkyl or alkoxy groups; R1R2, R4R7 and/or R5R6 may = a carbocyclic bridge; R6 and/or R7 = a polymer skeleton, e.g. polyester, polyamide, polyurea or polyurethane. An INDEPENDENT CLAIM is also included for the preparation of (I) by: (a) condensing a 2-(pyran-6-yl)-malonodinitrile (III) with an aminobenzaldehyde (IV); and (b) reacting the intermediate 2-(4-aminostyryl)-pyran (V) with a comonomer, e.g. dicarboxylic acid, acid chloride or anhydride or diisocyanate, to form (I). USE - Polymer dyes (I) are used for producing organic optical devices, e.g. light-emitting diodes (OLEDs) (all claimed). They are useful as red-emitting layers in these devices. ADVANTAGE - The emission maximum of (I) is in the red region of the spectrum and (I) are easily processed.

: http://publica.fraunhofer.de/documents/N-44155.html