一种用于同时比色检测痕量银和铁离子的新型多齿配体发色团。
A novel polydentate ligand chromophore for simultaneously colorimetric detection of trace Ag and Fe3.
作者信息
Yan Zhengquan, Zhao Qi, Wen Meijun, Hu Lei, Zhang Xuezhong, You Jinmao
机构信息
School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China; Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu Normal University, Qufu 273165, China.
School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China; Shandong Key Laboratory of Life-Organic Analysis, Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, Qufu Normal University, Qufu 273165, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2017 Nov 5;186:17-22. doi: 10.1016/j.saa.2017.06.007. Epub 2017 Jun 6.
A novel polydentate ligand chromophore, 3,6-di-(N-ethyl-N-ethoxyl phenylazo) acridine (EEPA), was identified and synthesized. After its structure was characterized by FTIR, H NMR, mass spectra and element analyses, it was noted to find that there was a simultaneously colorimetric response to Ag and Fe accompanying with different color changes, i.e., from brown to light purple for Ag and further to purple-red for Fe, respectively. Their different action mechanisms, a 1:2 complex mode for EEPA-Ag and 1:1 for EEPA-Fe, were investigated and confirmed by means of Job's plot and theoretical calculation. EEPA would be a potential colorimetric chemo-dosimeter for simultaneous detection of Ag and Fe with the detection limits of 1.6nmol·L and 69nmol·L, respectively.
一种新型多齿配体发色团，即3,6-二（N-乙基-N-乙氧基苯基偶氮）吖啶（EEPA），被鉴定并合成出来。通过傅里叶变换红外光谱（FTIR）、核磁共振氢谱（¹H NMR）、质谱和元素分析对其结构进行表征后，发现它对银和铁同时有比色响应，伴随不同颜色变化，即银使颜色从棕色变为浅紫色，铁则使颜色进一步变为紫红色。通过乔布氏曲线（Job's plot）和理论计算研究并证实了它们不同的作用机制，EEPA与银形成1:2的络合模式，与铁形成1:1的络合模式。EEPA有望成为一种潜在的比色化学剂量计，用于同时检测银和铁，检测限分别为1.6nmol·L⁻¹和69nmol·L⁻¹。
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