Colorimetric and ratiometric sensors derivated from natural building blocks for fluoride ion detection
作者:Heng Shi、Fengfei Zhao、Xinghan Chen、Shilong Yang、Jieni Xing、Hongjin Chen、Rui Zhang、Jian Liu
DOI:10.1016/j.tetlet.2019.151330
日期:2019.12
probes (SH-1~3) for fluoride ion detection were designed and synthesized from nature small molecules. Obvious yellow-to-orange color change of these probes in the THF was achieved only in presence of F− among the eight anions (F−, Cl−, Br−, I−, H2PO4−, HSO4−, CH3COO–, ClO4−), along with the emission shifting from green to orange red. These three probes are 1:1 complexed with fluoride ions, with complexation
从天然小分子设计合成了三种新型的氟离子比色探针(SH- 1〜3 )。在THF这些探针的明显黄色至橙色的颜色变化仅F中的存在来实现-八根阴离子(F间- ,氯- ,溴- ,我-,H 2 PO 4 -,HSO 4 -,CH 3 COO –,ClO 4 −),以及发射从绿色变为橙红色。这三个探针与氟离子1:1络合,络合常数约为0.1×10 4M -1。探针SH-1〜3的检出限低至约1μM。1 H NMR滴定研究表明,氟离子通过探针氨基与氟离子之间的氢键相互作用引起探针去质子化。