酮类Schiff碱的合成与荧光性质研究

Synthesis of keto Schiff bases and their fluorescence property

目的:研究所合成的酮类Schiff配体及其配合物的荧光性质。方法:合成了一种酮类双Schiff碱配体及其过渡金属Cu(Ⅱ)、Zn(Ⅱ)的Schiff配合物,并用元素分析、红外光谱、电子光谱、摩尔电导、1 H NMR对其结构进行了表征,测定了所合成的Schiff配体及其配合物的荧光光谱。结果:室温下,测得配体与Zn(OAc)2合成的配合物的固体荧光光谱和在不同溶剂中的荧光光谱。其在紫外光的照射下会发出黄绿色荧光。配合物L.Zn(OAc)2激发峰在468nm;荧光峰在538nm,相对强度(RFI):776.6。配体与Cu(Ⅱ)形成的配合物几乎观察不到荧光。结论:L.Zn(OAc)2配合物有良好的荧光性能,且在固体状态下的荧光远远强于在溶液中的荧光。

Objective： To study fluorescence of the Keto Schiff ligand and its complexes.Methods： A novel keto bis-Schiff base ligand and its transition metal Cu（Ⅱ）,Zn（Ⅱ） complexes were prepared and characterized by element analysis,IR,UV-Vis and molar conductivity and 1H NMR.The fluorescence spectrums of the Schiff ligand and its complexes were determined.Results：At the room temperature,the fluorescence spectrums of complex L·Zn（OAc）2 of solid state and in many different solutions were determined,kelly would be observed when they were irradiated by ultraviolet radiation.Ex： 468nm,Em： 538 nm,RFI： 776.6.The fluorescence of complex L·Cu（OAc）2 could not be found.Conclusions：It can be inferred that the Schiff base complex L·Zn（OAc）2 has good fluorescence capability,and its fluorescence of solid state is much stronger than that in the solutions.