A novel polydentate ligand chromophore for simultaneously colorimetric detection of trace Ag+ and Fe3+

作者：Yan, Zhengquan^*; Zhao, Qi; Wen, Meijun; Hu, Lei^*; Zhang, Xuezhong; You, Jinmao^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2017, 186: 17-22.

DOI：10.1016/j.saa.2017.06.007

• 3,6-diamino acridine
• Azo derivative
• Colorimetric probe
• Simultaneous detection
• Ag+
• Fe3+

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-1 NMR, mass spectra and element analyses, it was noted to find that there was a simultaneously colorimetric response to Ag+ and Fe3+ accompanying with different color changes, i.e., from brown to light purple for Ag+ and further to purple-red for Fe3+, respectively. Their different action mechanisms, a 1:2 complex mode for EEPA-Ag+ and 1:1 for EEPA-Fe3-, 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 Fe3+ with the detection limits of 1.6 nmol.L-1 and 69 nmol.L-1, respectively.

• 出版日期2017-11-5
• 单位曲阜师范大学