A rhodamine-based receptor consisting of a dipodal framework and a pseudo-cavity compatible with cation binding has exhibited fluorescence recognition of Hg2+ with a detection limit of 0.1 nm in a buffered aqueous medium. The Hg2+ coordination in the receptor pseudocavity resulted in the enhancement of fluorescence intensity due to spirolactam ring-opening.
一种基于
罗丹明的受体,由双足框架和与阳离子结合相容的伪腔组成,在缓冲
水介质中表现出对Hg2+的荧光识别,其检测限为0.1 nm。Hg2+在受体伪腔中的配位导致荧光强度的增强,这归因于
螺内酯环的开合。