蓝光锆(Ⅳ)配合物的合成及光致发光性能研究

Synthesis and Photoluminescent Property Study of Blue-emission Zr(Ⅳ) Complexes

合成了一系列蓝光锆(Ⅳ)配合物[Zr(NN)(DBM)3]Cl(DBM=二苯甲酰基甲烷,NN=1,10-邻菲罗啉1;2,9-二甲基-1,10-邻菲罗啉2;4,4’-二甲基-2,2’-联吡啶3;1-乙基-2-(1-萘基)-1H-咪唑-4,5-f-1,10-邻菲罗啉4),以波长为355 nm的紫外光激发,4个配合物的最大发射峰均位于445 nm左右,半峰宽只有36~45 nm。在相同的测试条件下,配合物1的蓝光发射强度最大,量子效率最高,其原因是结构刚性强,能够有效地减少非辐射跃迁造成的能量损失。而且,配合物1~3的热稳定性很好,分解温度均在200℃以上,可以用于制作有机发光器件,不会在器件的制作过程中发生分解。

A series of blue-emission Zr(Ⅳ) complexes [Zr(NN)(DBM)3]Cl(DBM = dibenzoylmethane,NN = 1,10-phenanthroline 1;2,9-dimethyl-1,10-phenanthroline 2;4,4'-dimethyl-2,2'-bipyridine 3;1-ethyl-2-(naphthalen-1-yl)-1H-imidazo-4,5-f-1,10-phenanthroline 4) were synthesized.The emission peaks of these complexes are all centered at 445 nm upon excitation at 355 nm,while their half-width are in the range of 36 ~ 45 nm.Under the same condition,complex 1 shows the strongest emission and highest photoluminescence quantum yield.This result attributes to its rigid structure because such structure can efficiently decrease energy loss coming from non-radiative transition.Moreover,the decomposing temperatures of complexes 1- 3 are all above 200 ℃ indicating their excellent thermal stability.Such results suggest that complexes 1- 3 can be utilized in the preparation of light-emitting device.