Hg(II) 选择性络合的显色杯芳烃衍生物。
Hg(II) selective complexation by chromoionophoric calix[4]arene derivative.
机构信息
National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan.
出版信息
J Fluoresc. 2011 May;21(3):1231-8. doi: 10.1007/s10895-010-0802-2. Epub 2011 Jan 8.
The present article describes an exploration regarding Hg(II) selective complexation behavior of 5,11,17,23-tetrakis[(N,N-dimethylamino)methyl]-25,26,27,28-tetrahydroxycalix[4]arene (4). The binding affinity of 4 toward selected transition metal ions such as Cd(II), Co(II), Cu(II), Hg(II), Ni(II), Pb(II) and Zn(II) have been investigated by UV-visible and fluorescence spectroscopies. From the results it has been noticed that 4 confers a pronounced preference for Hg(II) in complexation phenomenon even in the presence of other metal ions. The results of Job's plot analysis reveal 1:1 host-guest complex formation between Hg(II) and 4. The FT-IR spectroscopy also supports the complexation affinity of 4 for Hg(II).
本文描述了对 5,11,17,23-四[（N,N-二甲基氨基）甲基]-25,26,27,28-四羟基杯[4]芳烃（4）对 Hg(II) 选择性络合行为的探索。通过紫外-可见和荧光光谱法研究了 4 与 Cd(II)、Co(II)、Cu(II)、Hg(II)、Ni(II)、Pb(II)和 Zn(II)等选定过渡金属离子的结合亲和力。结果表明，即使存在其他金属离子，4 在络合现象中也明显优先选择 Hg(II)。Job 图分析的结果表明，Hg(II)与 4 之间形成了 1:1 的主客体配合物。傅里叶变换红外光谱（FT-IR）也支持 4 对 Hg(II)的络合亲和力。
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