Department of Chemistry, Indian Institute of Technology Indore, Simrol 453552, Indore, India.
Soft Matter. 2017 Sep 20;13(36):6243-6249. doi: 10.1039/c7sm01199g.
A carboxamide based molecule has shown unique gelation property in an aqueous mixture of DMF or DMSO. The gel itself has shown aggregation-induced fluorescence enhanced emission (AIEE), which can be utilized effectively in sensing ferrous and ferric ions as both of them switch off the fluorescence completely. An investigation by IR spectroscopy reveals an enhanced π interaction of nitrile group with the iron center and this could be the possible reason behind the complete quenching of AIEE. This molecule was further investigated for the formation of metallogels for a wide array of cations, which in turn can act in tandem to behave as a dynamic array to detect several anions by either switching off or switching on the emission property of the metallogels.
一种基于羧酰胺的分子在 DMF 或 DMSO 的混合水溶液中表现出独特的凝胶特性。该凝胶本身表现出聚集诱导荧光增强发射（AIEE），可有效地用于检测亚铁离子和铁离子，因为两者都能完全关闭荧光。通过红外光谱研究发现，腈基与铁中心之间的π相互作用增强，这可能是 AIEE 完全猝灭的原因。进一步研究了该分子在形成针对广泛阳离子的金属凝胶方面的作用，这些金属凝胶反过来可以协同作用，形成动态阵列，通过关闭或打开金属凝胶的发射特性来检测几种阴离子。
