MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENT, AND ORGANIC ELECTROLUMINESCENT ELEMENT
申请人:Morishita Hironobu
公开号:US20100187519A1
公开(公告)日:2010-07-29
A material for an organic electroluminescence device including at least one of compounds shown by the following formula (Ia), (Ib), (IIa), (IIb), (III), (IVa) or (IVb):
US8372527B2
申请人:——
公开号:US8372527B2
公开(公告)日:2013-02-12
Green Synthesis of Polycyclic Benzimidazole Derivatives and Organic Semiconductors
Polycyclic benzimidazole derivatives, an important class of compounds in organic electronics and photovoltaics, were prepared using a solvent-free “green” process based on heating carboxylic acid anhydrides and arylene diamines in the presence of zinc acetate in the solid state. Products were isolated and purified directly by train sublimation of the crude reaction mixtures. The reaction conditions