基于喹啉和三唑环的开链冠醚对金属离子的选择传感  

Selective Binding and Fluorescent Behavior of Metal Ions by Podand Possessing Quinoline and Triazole Groups

作　　者：杨东瑞[1] 张志君[1] 张衡益[1] 刘育[1] 

机构地区：[1]南开大学化学系元素有机化学国家重点实验室,天津300071

出　　处：《高等学校化学学报》2011年第9期2169-2174,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20932004;20972077)资助

摘　　要：通过Click化学反应合成了一种含有喹啉基和三唑基的开链冠醚,考察和比较了主体化合物对镉等金属离子的荧光传感和选择性键合行为,并通过荧光光谱和核磁共振等手段研究了溶剂对荧光传感行为的影响.Fluorescent chemosensors based on supramolecular interactions are receiving increasing attention due to their potential in analytical chemistry and environmental monitoring.Podands possessing 8-hydroxyqui-nolino and triazole groups were synthesized via ＂Click chemistry＂ reaction.Their spectrometric behavior and the binding ability toward metal ions were investigated by fluorescence spectrum and NMR spectroscopy.With good water solubility,chemosensors 1 and 2 exhibited a distinct switch-on fluorescence response to Cd2＋ and Zn2＋ over other metal ions,according to which the chemosensory function are realized.Significantly,spectrophotometric studies also demonstrated that the proportion of methanol in aqueous solution greatly influent the selectivity and fluorescent emission ability of host compound.Additionally,1H NMR analysis revealed that the 8-hydroxyquinolino and the triazole group,as well as the ether chains,were involved in the bonding interactions with the ions.

关 键 词：荧光传感器 镉离子 锌离子 开链冠醚 

分 类 号：O625[理学—有机化学]