Compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 are unsubstituted or substituted phenyl or naphthyl, and R.sub.3 and R.sub.4 are alkyl, alkoxycarbonyl, phenyl, benzoyl or benzyl, are suitable for dyeing high molecular weight organic material.
DIKETOPYRROLOPYROLE (DPP)-BASED SENSITIZERS FOR ELECTROCHEMICAL OR OPTOELECTRONIC DEVICES
申请人:Ecole Polytechnique Federale de Lausanne (EPFL)
公开号:US20150213966A1
公开(公告)日:2015-07-30
The present invention relates to compounds of formula (I) based on DPP moiety being useful as metal-free organic sensitizers or dyes of type D-π-A in electrochemical or optoelectronic devices, their use as sensitizer or dye and an electrochemical or optoelectronic device comprising a compound of the invention.
Verbindungen der Formel
worin R1, R2, R3 und R. die in Anspruch 1 angegebenen Bedeutungen haben, eignen sich zum Färben von hochmolekularem organischem Material.
式中 R1、R2、R3 和 R.具有权利要求 1 所述含义的化合物适用于高分子量有机材料的着色。
Diketopyrrolopyrole (DPP)-based sensitizers for electrochemical or optoelectronic devices
申请人:Ecole Polytechnique Fédérale de Lausanne (EPFL)
公开号:EP2703468A1
公开(公告)日:2014-03-05
The present invention relates to compounds of formula (I) based on DPP moiety being useful as metal-free organic sensitizers or dyes of type D-π-A in electrochemical or optoelectronic devices, their use as sensitizer or dye and an electrochemical or optoelectronic device comprising a compound of the invention.