罗丹明-三嗪荧光探针对Al3+和Cr3+的识别

摘要

A symmetrical rhodamine-triazine derivative was synthesized through step-by-step substitution of rhodamine B ethylenediamine with two chlorines on cyanuric chloride.It showed an extreme selectivity for AP+ and Cr3+ over other common metal ions and strong fluorescence emission and UV-Visible absorption in the ethanol solution of pH 4.Due to the difference in complexing ability,the recognition of the derivative for Al3+ and Cr3+ was not interfered by other coexisting ions.Under certain conditions,the derivative can be used as high selectivity and high semitivity Al3+ or Cr3+ fluorescence and colorimetric enhanced probe.%用罗丹明B乙二胺分步取代三聚氯氰环上两个氯原子,得到对称结构的罗丹明-三嗪衍生物.在pH 4～6的乙醇溶液中,衍生物能选择性识别Al3+和Cr3+,荧光发射和紫外-可见吸收显著增强.衍生物对Al3+和Cr3+识别不受共存金属离子干扰.在一定条件下,可作为高选择性和高灵敏的Al3+或Cr3+荧光和比色增强型光谱探针.