Patent ID: 8652656
Filing Date: 2014-02-18
Classification: C07F,H01L

Abstract:
1. A compound having formula: wherein Ar and Ar′ are independently selected from the group consisting of phenyl, biphenyl, naphthalene, dibenzothiophene and dibenzofuran, which are optionally further substituted; Z is selected from Si and Ge; L is a single bond or comprises an aryl or heteroaryl group having from 5-20 carbon atoms, which is optionally further substituted; A is a group directly bonded to Z and is selected from the group consisting of triphenylene, tetraphenylene, pyrene, naphthalene, fluoranthene, chrysene, phenanthrene, azatriphenylene, azatetraphenylene, azapyrene, azanaphthalene, azafluoranthene, azachrysene, azaphenanthrene, and combinations thereof, which are optionally further substituted with one or more groups selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, aryl, aryloxy, and combinations thereof; B is a group selected from the group consisting of carbazole, dibenzoselenophene, aza-carbazole, aza-dibenzofuran, aza-dibenzothiophene, azadibenzoselenophene, and combinations thereof, which are optionally further substituted with one or more groups selected from hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and wherein the substitution is optionally fused to the carbazole, dibenzoselenophene, aza-carbazole, aza-dibenzofuran, aza-dibenzothiophene or aza-dibenzoselenophene group wherein when B is carbazole, the carbazole group is connected to L through a ring carbon.