Zhao Xu, Yin Guohui, Jin Di, Yan Xilong, Li Yang, Chen Ligong
School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, People's Republic of China.
J Fluoresc. 2015 Mar;25(2):327-33. doi: 10.1007/s10895-015-1513-5. Epub 2015 Feb 10.
A novel hydroxyethyl piperazine functionalized cyanine derivative was designed and synthesized. It presents selective colorimetric as well as ratiometric absorption responses to trivalent metal cations (Cr(3+), Fe(3+) and Al(3+)) over a variety of divalent and monovalent metal cations in 3:7 ethanol-water solution. Detection limits of this method for Cr(3+), Fe(3+) and Al(3+) were 3.99 μM, 4.30 μM and 1.85 μM, respectively. The recognition mechanism was attributed to the protonation of the organic probe, which blocked the photoinduced electron transfer (PET) process. In addition, the sensor was also successfully applied to the determination of Cr(3+) in prepared samples.
设计并合成了一种新型的羟乙基哌嗪官能化花菁衍生物。在3:7的乙醇-水溶液中，它对三价金属阳离子（Cr(3+)、Fe(3+)和Al(3+)）呈现出选择性比色和比率吸收响应，优于多种二价和一价金属阳离子。该方法对Cr(3+)、Fe(3+)和Al(3+)的检测限分别为3.99 μM、4.30 μM和1.85 μM。识别机制归因于有机探针的质子化，其阻断了光诱导电子转移（PET）过程。此外，该传感器还成功应用于制备样品中Cr(3+)的测定。
