NITROGENATED HETEROCYCLIC DERIVATIVE, ELECTRON-TRANSPORTING MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENTS, AND ORGANIC ELECTROLUMINESCENT ELEMENT USING SAME
申请人:Mizutani Sayaka
公开号:US20130306955A1
公开(公告)日:2013-11-21
A specific nitrogen-containing heterocyclic compound having a urea structure, an electron transporting material containing the nitrogen-containing heterocyclic compound, and an organic electroluminescence device including a light emitting layer and an electron transporting layer between a cathode and an anode in which the electron transporting layer includes the electron transporting material or the nitrogen-containing heterocyclic derivative. An organic EL device exhibiting high emission efficiency even at low voltage and a material for organic EL devices are described.
US9748496B2
申请人:——
公开号:US9748496B2
公开(公告)日:2017-08-29
Synthesis and properties of 4-haloimidazo[4,5-c]pyridin-2-ones