Coplanarity in the Backbones of Ladder-type Oligo(p-phenylene) Homologues and Derivatives
摘要:
p-Tolyl-substituted ladder-type oligo(p-phenylene) s containing three, four, and five phenylene rings were readily synthesized. The uniform aryl substitution of these systems allowed us to determine the coplanarity of the d-conjugated backbones crystallographically. The intramolecular annulations eliminate almost all of the conformational disorder and enhance the degree of d-conjugation of the backbones, resulting in significant red shifts in the absorption and emission maxima and lower oxidation potentials in the higher homologues.
Coplanarity in the Backbones of Ladder-type Oligo(p-phenylene) Homologues and Derivatives
摘要:
p-Tolyl-substituted ladder-type oligo(p-phenylene) s containing three, four, and five phenylene rings were readily synthesized. The uniform aryl substitution of these systems allowed us to determine the coplanarity of the d-conjugated backbones crystallographically. The intramolecular annulations eliminate almost all of the conformational disorder and enhance the degree of d-conjugation of the backbones, resulting in significant red shifts in the absorption and emission maxima and lower oxidation potentials in the higher homologues.
The present invention relates to organic electroluminescent devices, in particular blue-emitting devices, in which compounds of the formulae (1) to (4) are used as host material or dopant in the emitting layer and/or as hole-transport material and/or as electron-transport material.
The present invention relates to organic electroluminescent devices, in particular blue-emitting devices, in which compounds of the formulae (1) to (4) are used as host material or dopant in the emitting layer and/or as hole-transport material and/or as electron-transport material.
MATERIALIEN FÜR ORGANISCHE ELEKTROLUMINESZENZVORRICHTUNGEN
申请人:Merck Patent GmbH
公开号:EP2024310A1
公开(公告)日:2009-02-18
POLYMERS COMPRISING STRUCTURAL UNITS WHICH CONTAIN ALKYLALKOXY GROUPS, BLENDS COMPRISING THESE POLYMERS, AND OPTO-ELECTRONIC DEVICES COMPRISING THESE POLYMERS AND BLENDS
申请人:Meyer Frank Egon
公开号:US20120097938A1
公开(公告)日:2012-04-26
The present invention relates to polymers comprising structural units which contain alkylalkoxy groups, and blends which comprise the polymers according to the invention. The invention is also directed to the use of the polymers and blends according to the invention in opto-electronic devices and to these devices themselves.