新型喹啉类配合物的合成、结构及光学性质  

Synthesis,Structure and Fluorescent Properties of a New Complex Based on 8-Aminoquinoline

作　　者：严达 熊志 徐衡 YAN Da;XIONG Zhi;XU Heng(School of Chemistry and Chemical Engineering,Anqing Normal University,Anqing 246133,China;Tongling Jintai Chemical Industry Co,Ltd,Tongling 244101,China.)

机构地区：[1]安庆师范大学化学化工学院,安徽安庆246133 [2]铜陵金泰化工股份有限公司,安徽铜陵244101

出　　处：《安庆师范大学学报（自然科学版）》2023年第3期105-109,共5页Journal of Anqing Normal University(Natural Science Edition)

基　　金：安徽高校省级自然科学研究重点项目(KJ2019A0549)。

摘　　要：本文以8-氨基喹啉为唯一配体,通过溶剂挥发法与Cd(NO_(3))_(2)化合物成功合成了一种新的单分子镉配合物:[Cd(8-aql)_(4)](NO_(3))_(2)·(8-aql)(1)(8-aql=8-氨基喹啉),同时对其进行了元素、红外光谱和X-射线单晶衍射等结构表征分析,并研究了其相关热学和光学性质。研究表明,配合物1空间群为P21/n,属于单斜晶系,中心离子Cd(Ⅱ)为六配位模式,为畸变的八面体配位几何构型。该配合物在140℃以内热稳定性好,并且在457 nm处有蓝光发射,属配体的π*-π跃迁。配合物荧光性质有机溶剂影响研究表明,不同有机小分子对该配合物的发射光波长和强度均有不同程度的影响,其中,甲醇溶剂位移最大且红移95 nm,而硝基苯则使配合物荧光发生猝灭,因此该配合物可作为荧光探针来检测低浓度的硝基苯。A new complex,[Cd(8-aql)_(4)](NO_(3))_(2)·(8-aql)(1)(8-aql=8-aminoquinoline)has been synthesized with 8-aminoquinoline as the only ligand by solvent evaporation method,and characterized by elemental analysis,FT-IR and single crystal X-ray diffraction.In addition,the relevant thermal and optical properties of the complex were also studied.The study shows that the space group of complex 1 crystallizes in the monoclinic system is P21/n.In complex 1,the Cd2+ion has a distorted octahedral coordination geometry coordinated by six atoms.Meanwhile,Complex 1 shows high thermal stability under 140℃ and displays blue fluorescence at 457 nm in the solid state,where the emission peak is attributed toπ*-πof ligand.The fluorescence properties of the complex in common solvents were discussed.The experimental results show that different organic small molecules have different effects on the wavelength and intensity of the fluorescence.Among them,the wavelength displacement in methanol solvent is the largest with a redshift of 95 nm,while nitrobenzene makes the fluorescence quenching of the complex.Thus,the complex can be used as a fluorescence probe to detect low concentration nitrobenzene.

关 键 词：8-氨基喹啉 荧光探针 硝基苯 

分 类 号：O641.4[理学—物理化学]