Synthese von makromolekeln einheitlicher größe. II. Mitt. Synthese neuer diol-oligo-urethane nach dem duplikationsverfahren.
摘要:
AbstractNeue Diol‐di‐ und Diol‐hexa‐urethane werden synthetisiert. Als Komponenten dienen aromatische Diisocyanate vom Arylen‐, Diarylen‐ und Naphthylentyp und aliphatische Diisocyanate; als Diole werden Oligo‐methylendiole, wie 1,4‐Butandiol, und Diole mit Heteroatomen, wie Diglykol, N‐Alkyldiäthanolamine u. a. angewandt. Es werden besser lösliche Oligo‐urethane erhalten, die zur Durchführung des Duplikationsverfahrens geeingeter sind. Es werden mehrere neue Diisocyanate hergestellt. Zur Charakterisierung der Diol‐oligo‐urethane werden bromsubstituierte Phenylisocyanate angewandt.
A series of CBP-derivatives as host materials for blue phosphorescent organic light-emitting diodes
作者:Pamela Schrögel、Aušra Tomkevičienė、Peter Strohriegl、Sebastian T. Hoffmann、Anna Köhler、Christian Lennartz
DOI:10.1039/c0jm03321a
日期:——
We report a series of CBP-derivatives with superior thermal and electronic properties for the use as host materials for blue electrophosphorescent organic light emitting diodes. We applied a systematic variation of the substitution pattern in the 2- and 2′-position of the biphenyl unit and the 3- and 6-position of the carbazole moieties. In contrast to the crystalline parent compound CBP, all methyl and trifluoromethyl substituted derivatives show amorphous behaviour. Substitution in the 2- and 2′-position of the biphenyl causes a twisting of the phenyl rings. Hence, the degree of conjugation of the molecules is limited which leads to enlarged triplet energies of approximately 2.95 eV compared to 2.58 eV for CBP. The methyl substitution at the active 3- and 6-position of the pendant carbazole units yields materials with an electrochemically stable behaviour against oxidation.
Conjugated compounds containing triarylamine structural elements, and their use
申请人:Yen Feng-wen
公开号:US20070077450A1
公开(公告)日:2007-04-05
The present invention discloses conjugated compounds containing triarylamine structural elements with a general formula AB
m
, wherein A is aryl moiety with or without hetero atom(s), m is integers from 2 to 4, and B is as following:
wherein Ar is aryl moiety. Moreover, the conjugated compounds of the invention are used as hole transport material, hole injection material and/or as host material in organic electroluminescence devices and/or phosphorescence devices, and as hole transport material in solar cells.
PHOTOCROSSLINKABLE MATERIALS COMPRISING ALICYCLIC GROUP
申请人:Eckert Jean-Francois
公开号:US20100048849A1
公开(公告)日:2010-02-25
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.
A diamine compound of formula (I) is proposed as well as polymers, copolymers, polyamic acids, polyamic acid esters, or polyimides based on such compound.