LI Hongda,CHEN Xiuqiong,YIN Bingzhu*.A ratiometric fluorescent probe for Palladium detection based on indolium hemicyanine dye[J].Journal of Yanbian University,2014,40(03):229-234，237.
基于吲哚类半花菁染料的钯比率荧光探针
- Title:
- A ratiometric fluorescent probe for Palladium detection based on indolium hemicyanine dye
- 分类号:
- O625.25
- 文献标志码:
- A
- 摘要:
- 利用6-羟基萘-2-醛和碘化N-乙基-2,3,3-三甲基-3H-吲哚啉季铵盐的缩合反应生成的羟基半花菁染料2与氯甲酸烯丙酯的反应合成了荧光比率型钯探针1.研究表明:在含水介质中,探针1对钯(Pd0和Pd2+)显示出很高的敏感性、选择性和抗干扰性,其荧光比率增强大约72倍,对Pd2+的最低检测极限为0.23 μmol/L.探针1对钯的作用机理是钯催化碳酸烯丙酯断裂导致比率荧光变化.
- Abstract:
- A ratiometric fluorescent probe(1)for Palladium specieses was synthesized based on an acylation reaction of allyl chlorocarbonate and hydroxy-hemicyanine dye(2), which was prepared through a condensation reaction of 6-hydroxy-2-naphthaldehyde and 1-ethyl-2,3,3-trimethyl-3H-indol-1-ium iodide. Probe 1 displays rapid response, excellent selectivity and sensitivity toward Palladium species(Pd0 and Pd2+)with a low detection limit(0.23 μmol/L)in buffers and the ratio of emission intensities was changed with a 72-fold ratiometric enhancement. Importantly, the ratiometric enhancement mechanism for sensing of Palladium species ascribed to the Pd-catalysed cleavage reaction of allyl carbonate.
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备注/Memo
收稿日期: 2014-05-22*通信作者: 尹炳柱(1952—),男,博士,教授,研究方向为超分子化学.