含咔唑基团铕配合物的合成和荧光性能研究

Synthesis and Luminescence Properties of Two Novel Europium(Ⅲ) Complexes with Carbazole Moieties

将具有良好空穴传输能力的咔唑基团引入到一个新型β-二酮配体CCHPD（1-[（6-（9H-carbazol-9-yl）hexoxy）phenyl]-3-[（6-（9H-carba-zol-9-yl）-hexoxy）-phenyl]-1,3-d ione）中,然后分别以1,10-邻菲咯啉（Phen）和4,7-二苯基-1,10-邻菲咯啉（Bath）为中性配体合成了两种相应的树枝状铕配合物。配合物在230-350 nm的紫外光激发下都可以发射出非常强的铕离子特征红光（^5D0→^7FJ（J=0-4））,主发射峰在612nm。含脂肪链的咔唑基团在铕离子的周围形成了＂光吸收天线＂,拓宽了β-二酮的吸收范围,屏蔽溶剂分子对稀土离子荧光猝灭效应,还可以有效地提高铕配合物的空穴传输能力,对于提高稀土配合物的电致发光性能方面有重要的意义。

Two novel compounds named Eu （CCPHD）3 Phen and Eu（CCPHD）3 Bath with carbazole moieties, which have good hole-transporting properties, were synthesized. The carbazole moieties cotdd act as the ＂light-harvesting antenna＂ to increase the luminescence performance because of the broad absorption band and shield the effects of solvents. The novel ternary europium complexes and reference Eu （DBM）3 Phen showed brightly red characteristic emission of Eu（Ⅲ） （^5D0→^7FJ（J=0-4））, 612 nm） under excitation through broad band （230 - 350 nm）. In addition, the carbazole moieties could prevent crystallization of the complexes and increase the quality of the film fabricated in organic lightemitting diodes （OLEDs）.