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设计合成了一种新型的基于5-芳基-2-巯基噁二唑辅助配体的双核环金属铂配合物(dfppy)2Pt2(C8OXT)2,其中dfppy为2-(4,6-二氟苯基)吡啶,C8OXT为5-苯基-2-巯基-1,3,4-噁二唑桥连配体.系统研究了该双核铂配合物(dfppy)2Pt2(C8OXT)2的热稳定性、光物理、电化学及电致发光性能.以(dfppy)2Pt2(C8OXT)2作为客体掺杂到聚合物主体材料中制备了单发光层聚合物电致发光器件.器件展现了饱和的红光发射,其最大发射峰为620nm.当配合物掺杂浓度为8wt%时,器件性能达到最好.其最高外量子效率为8.4%,最高电流效率为4.2cd/A,最大亮度为3228cd/m2.本研究表明,以5-苯基-2-巯基-1,3,4-噁二唑作为桥连配体的双核铂配合物在聚合物器件中能够实现高效红光发射.
A new type of dinuclear platinum (dfppy) 2Pt2 (C8OXT) 2 based on 5-aryl-2-mercapto oxadiazole ancillary ligand has been designed and synthesized, in which dfppy is 2- (4,6- Phenyl) pyridine and C8OXT is a 5-phenyl-2-mercapto-1,3,4-oxadiazole bridged ligand.The thermal stability of dfppy 2Pt2 (C8OXT) 2 , Photophysical, electrochemical and electroluminescent properties of single-emitting layer polymer electroluminescent devices were prepared by doping the host material with (dfppy) 2Pt2 (C8OXT) 2 as guest. The device exhibited a saturated red And its maximum emission peak is 620nm.The best performance of the device is obtained when the dopant concentration is 8wt% .The maximum external quantum efficiency is 8.4%, the maximum current efficiency is 4.2cd / A and the maximum brightness is 3228cd / m2 The present study shows that dinuclear platinum complexes with 5-phenyl-2-mercapto-1,3,4-oxadiazole as a bridging ligand can emit highly efficient red light in polymer devices.