ORGANIC ELECTROLUMINESCENT ELEMENT, LIGHT-EMITTING MATERIAL THEREFOR, LIGHT EMITTING DEVICE, DISPLAY DEVICE, AND ILLUMINATION DEVICE
申请人:UDC Ireland Limited
公开号:US20150084016A1
公开(公告)日:2015-03-26
An organic electroluminescent element including a luminescent compound represented by the following formula (in which R
1
to R
14
each independently represent a hydrogen atom, a deuterium atom, an alkyl group, an aryl group, a heteroaryl group, a fluorine atom, a cyano group, an amino group, an alkoxy group, an aryloxy group, a thio group, or a silyl group, and 8 to 13 groups out of R
1
to R
14
each represent a hydrogen atom or a deuterium atom.) in a light emitting layer has high durability and excellent chromaticity.
A Concise Synthetic Approach Towards Hydroxytetraphenylenes
作者:Henry Wong、Jian-Fang Cui、Hui Huang
DOI:10.1055/s-0030-1259708
日期:2011.4
This communication is concerned with our efforts in improving the syntheses of five hydroxytetraphenylens, which we obtained before. A short consecutive direct ortho-metalation and oxidative coupling sequence from N-pivaloyl-protected substituted aniline provided the corresponding 2,2′-diiodobiphenyls. Subsequently, copper(II)-mediated oxidative coupling of 2,2′-diiodobiphenyls successfully led to the formation of the corresponding hydroxytetraphenylenes. This is the first time that hydroxytetraphenylenes 2, 4 and 5 were all realized via oxidative cross-coupling reactions from the corresponding 2,2′-diiodobiphenyls.