配合物Fe(L)_(2)(PF_(6))_(2)的合成及其对部分过渡金属离子荧光选择  

Synthesis of complex Fe(L)_(2)(PF_(6))_(2) and its fluorescence responses for selected transition metal ions

作　　者：王勇[1] 施红 WANG Yong;SHI Hong(Hubei Key Laboratory of Drug Synthesis and Optimization, Jingchu University of Technology, Jingmen 444800, China)

机构地区：[1]荆楚理工学院药物合成与优化湖北省重点实验室,荆门448000

出　　处：《中南民族大学学报（自然科学版）》2021年第6期551-556,共6页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：湖北省第三批青年英才计划资助项目(QNYC201901);荆楚理工学院培育资助项目(PY201901)。

摘　　要：将硫酸亚铁铵和有机配体L在NH_(4)PF_(6)存在下制得一个含三联吡啶配合物Fe(L)_(2)(PF_(6))_(2)(L=4′-苯基-2,2′:6′,2″-三联吡啶),并对其进行了元素分析、电子吸收光谱和红外光谱等结构表征.配合物的电子吸收光谱的研究表明:相对于前体L,配合物在565 nm出现的新峰可以归属为MLCT(metal-to-ligand charge transfer)跃迁.配合物的荧光选择性研究表明:Zn(Ⅱ)和Cd(Ⅱ)的加入能增强配合物的荧光强度,Fe(Ⅲ)、Pb(Ⅱ)、Co(Ⅱ)、Cr(Ⅲ)、Fe(Ⅱ)、Mn(Ⅱ)、Ni(Ⅱ)和Fe(Ⅱ)的加入能完全或者部分猝灭其荧光强度.A terpyridine compound Fe(L)_(2)(PF_(6))_(2)(L=4′-phenyl-2,2′:6′,2″-terpyridine)was obtained by the reaction of ammonium ferrous sulfate and organic ligand L in the presence of NH_(4)PF_(6).The compound was characterized by elemental analysis,electronic absorption spectra and IR.Electronic absorption spectroscopy studies indicated that the new peak of the compound at 565 nm could be attributed to the MLCT(metal-to-ligand charge transfer)transition.Fluorescence selectivity studies indicated that the addition of Zn(Ⅱ)and Cd(Ⅱ)enhanced the fluorescence intensity of the compound,while Fe(Ⅲ),Pb(Ⅱ),Co(Ⅱ),Cr(Ⅲ),Fe(Ⅱ),Mn(Ⅱ),Ni(Ⅱ)and Fe(Ⅱ)completely or partially quenched the fluorescence.

关 键 词：荧光光谱 三联吡啶 Fe(Ⅱ)离子 电子吸收光谱 

分 类 号：O621.3[理学—有机化学]