作者:Sally Anderson、Peter N. Taylor、Geraldine L. B. Verschoor
DOI:10.1002/chem.200305284
日期:2004.1.23
Four linear benzofuran trimers have been prepared by a two-stage synthetic procedure. They were tested as materials for organic electroluminescence (OEL). Precursor phenylene ethynylene oligomers were formed in the first stage, then after removal of the phenolic hydroxyl protecting groups, a base was used to promote the cyclization of ortho-hydroxy phenylene ethynylenes to benzofurans. Both acetate
通过两步合成程序已制备了四个线性苯并呋喃三聚体。将它们作为有机电致发光(OEL)的材料进行了测试。在第一阶段形成前体亚苯基亚乙炔低聚物,然后除去酚羟基保护基后,使用碱促进邻羟基亚苯基亚乙炔基向苯并呋喃的环化。乙酸酯和碳酸叔丁酯都被用作保护基。苯并呋喃上的叔丁基和正己基取代基用于调节溶解性,聚集性和成膜性。两个叔丁基可防止固态聚集,从而将发射光谱保持在可见光谱的蓝色区域。探索了叔丁基取代的苯并呋喃三聚体的OEL特性,并观察到蓝色发射。