Selective and colorimetric fluoride anion chemosensor based on s-tetrazines
作者:Yingjie Zhao、Yongjun Li、Zhihong Qin、Runsheng Jiang、Huibiao Liu、Yuliang Li
DOI:10.1039/c2dt31641b
日期:——
s-Tetrazine and their derivatives are found to be a class of selective and colorimetric chemosensors for fluoride anions. The supramolecular interaction (anion–π and charge/electron transfer) between fluoride ion and π-electron deficient tetrazines receptor could facilitate the F−–tetrazines electron transfer (ET) event that generates tetrazine˙− radical anion. Accordingly, the color of its solution changed from red to green. Furthermore, the recognition of F− in DMSO is tolerant to water (DMSO–H2O = 9 : 1, v/v) and shows excellent selectivity towards other anions, especially H2PO4− and OAc−.