2,6-二[4-′(N,N-二苯基氨基)芪]苯并[1-2,4-5]二噁唑的合成与发光特性

通过对二苯氨基苯甲醛与2,6-二(4-氯甲基苯基)苯并1-2,4-5]二唑之间的Wittig-Horner反应,设计并合成了一个2,6-二4-′(N,N-二苯基氨基)芪]苯并1-2,4-5]二唑新化合物,目的在于均二苯乙烯分子中同时引入空穴传输和电子传输结构单元,可望提高均二苯乙烯型发光材料的发光强度和光量子效率.采用UV-VisI、R1、HNMR和元素分析等分析方法对合成产物结构进行了确认,并考察了溶剂对其光致发光特性的影响.所合成化合物的相关分析数据表明:1)其分子中的两个均二苯乙烯基均为反式“芪”结构特征;2)随溶剂极性增高,其UV-Vis光谱和荧光光谱的λmax红移;3)可用作蓝色发光材料.

Synthesis and Photo-Luminescent Properties of 2,6-Di (4'- bisphenylaminostilbenyl) benzo[1-2,4-5] bisoxazole

A novel compound 2,6-di(4′-bisphenylaminostilbenyl)benzo1-2,4-5]bisoxazole have been designed and synthesized with triphenylamino aldehyde and 2,6-bis(4-chloromethyl phenylene)benzo 1-2,4-5]dioxazole through Wittig-Horner reaction,that simultaneously taking triphenylamino as a hole transporting unit and benzobisoxazole as an electron transporting unit into the stilbene can evidently enhanced its light-emitting and light quantum efficiency.Its chemical structure has been determined by UV-Vis,IR,()~1HNMR and EA,and photo-luminescent properties have also been researched.The results indicated that the synthesized compound has trans-stilbene structural character and can be used as small molecular blue light-emitting material.