A simple and efficient colorimetric anion sensor based on a thiourea group in DMSO and DMSO-water and its real-life application.
An efficient colorimetric sensor with a thiourea moiety as binding sites and p-nitrophenylhydrazine as a signaling unit has been synthesized by only one single-step procedure. Selectivity for anions with the distinct geometry (tetrahedral, trigonal planar and spherical) has been investigated in dry DMSO and even in DMSO/H(2)O (95:5, v/v) solutions through the naked-eye experiment, UV-vis titration and (1)H NMR titration techniques. In particular, the fluoride of toothpaste can be detected qualitatively by the sensor 1.
Shao
Jie
J
Department of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.
Lin
Hai
H
Lin
Hua-Kuan
HK
D000838:Anions / Q000737:chemistry; D003124:Colorimetry / Q000379:methods*; D004121:Dimethyl Sulfoxide / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013056:Spectrophotometry, Ultraviolet; D013890:Thiourea / Q000737:chemistry*; D017186:Titrimetry; D014867:Water / Q000737:chemistry*
D000838:Anions; D014867:Water; D013890:Thiourea; D004121:Dimethyl Sulfoxide