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Synthesis, Thermal and Luminescence Properties of Ortho-Terphenyl Derivatives with 1,3,4-Oxadiazole Moiety

机译:1,3,4-恶二唑基邻三联苯衍生物的合成,热性质和发光性质

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摘要

A series of compounds and two polymers, all consisting of o-terphenyl and 1,3,4-oxadiazole units, were synthesized. They were characterized by GC, FT/IR, NMR, elemental analysis, viscometry, DSC, POM, TGA, and absorption and emission spectrometry. In general, by introducing an o-phenyl central core to 2,5-diphenyl-1,3,4-oxadiazole backbone, the processablility of these materials was improved while maintaining a blue-light-emitting capability. The CIE coordinates of compounds with p-chloro, methoxy and t-butyl groups in EL devices were found to be (0.19, 0.16), (0.17, 0.13) and (0.18, 0.13), respectively, i.e., in the deep-blue region. Also, amorphous polymer with a m-phenylene unit, which shows good solubility in common organic solvents and excellent thermal stability, emits indigo-light at 415 nm on photoexcitation.
机译:合成了全部由邻三联苯基和1,3,4-恶二唑单元组成的一系列化合物和两种聚合物。通过GC,FT / IR,NMR,元素分析,粘度测定,DSC,POM,TGA以及吸收和发射光谱对它们进行了表征。通常,通过在2,5-二苯基-1,3,4-恶二唑骨架上引入邻苯基中心核,可以在保持蓝光发射能力的同时提高这些材料的可加工性。发现在EL器件中具有对氯,甲氧基和叔丁基的化合物的CIE坐标分别为(0.19,0.16),(0.17,0.13)和(0.18,0.13),即深蓝色区域。同样,具有间苯撑单元的无定形聚合物在普通的有机溶剂中表现出良好的溶解性,并且具有出色的热稳定性,在光激发下会发出415 nm的靛蓝光。

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