A selective fluorogenic chemodosimeter for Hg2+ based on the dimerization of desulfurized product
作者:Peng Zhang、BingBing Shi、YouMing Zhang、Qi Lin、Hong Yao、XingMei You、TaiBao Wei
DOI:10.1016/j.tet.2013.10.024
日期:2013.12
A simple Hg2+-selective chemodosimetric system based on thiosemicarbazone was investigated. The transformation of thiosemicarbazone into semicarbazone selectively exerted by Hg2+ ions and the dimerization of semicarbazone resulted in a pronounced OFF–ON-type fluorescent signaling behavior. The coexistent metal ions, such as Fe3+, Ca2+, Cu2+, Co2+, Ni2+, Cd2+, Pb2+, Zn2+, Cr3+, Mg2+, Na+, K+, and Fe2+
研究了一种简单的基于硫半脲的Hg 2+选择性化学计量系统。Hg 2+离子选择性地将硫半脲转化为半脲和半脲的二聚化导致明显的OFF-ON型荧光信号行为。共存的金属离子,例如Fe 3+,Ca 2 +,Cu 2 +,Co 2 +,Ni 2 +,Cd 2 +,Pb 2 +,Zn 2 +,Cr 3+,Mg 2 +,Na +, K +和Fe 2+对汞的检测无明显干扰2+。此外,S 12 -Hg 2+对碱性阴离子具有很高的敏感性,可形成“ OFF-ON-OFF”类型的信号传导行为,Hg 2+诱导的发射光谱可被淬灭。此外,基于S 12的测试条对Hg 2+表现出良好的选择性。我们相信试纸可以作为一种便捷高效的Hg 2+测试试剂盒。