Synthesis of a novel N,N',N'-tetraacetyl-4,6-dimethoxyindole-based dual chemosensor for the recognition of Fe3+ and Cu2+ ions
作者:Elif Şenkuytu、Murat Bingul、Mehmet F. Saglam、Hakan Kandemir、Ibrahim F. Sengul
DOI:10.1016/j.ica.2019.05.046
日期:2019.9
and fluorescence spectroscopy spectral changes upon addition of different cations. The compound 5 demonstrated selective recognition toward the Fe+3 and Cu+2 ions over other cations examined such as Li+, Na+, K+, Mg2+, Ca2+, Ba2+, Mn2+, Fe2+, Cr3+, Co2+, Ni2+, Ag+, Cd2+, Al3+, Hg+, Zn2+. The complex stoichiometry of the compound 5 and Cu2+/Fe3+ ions were determined as 2:1 (ligand/metal) by fluorescence
摘要成功地合成了一种新颖的N,N',N',1-四乙酰基-4,6-二甲氧基-1H-吲哚-2-碳酰肼5,其带有四个N-乙酰基(N-COCH3)作为阳离子结合位点。在三乙胺的存在下,容易获得的4,6-二甲氧基-1H-吲哚-2-碳酰肼4与乙酸酐的反应在二甲基甲酰胺中进行。使用1 H NMR,13 C NMR,FT-IR,质谱和单晶X射线衍射技术确认了乙酰基吲哚5的结构。通过监测UV-Vis和添加不同阳离子后的荧光光谱变化,研究了目标化合物5的比色传感能力。与检测的其他阳离子(例如Li +,Na +,K +,Mg2 +,Ca2 +,Ba2 +,Mn2 +,Fe2 +,Cr3 +,Co2 +,Ni2 +,Ag +,Cd2 +,Al3 +,Hg +,Zn2 +。通过荧光滴定法(乔布氏图)将化合物5和Cu2 + / Fe3 +离子的复杂化学计量比确定为2:1(配体/金属)。这是第一个报告,显示4,6-二甲氧基吲哚部分代表能够检测Cu2