Naked eye sensing of anions using thiourea based chemosensors with real time application
摘要:
Novel chromogenic sensors with thiourea moiety as receptor unit were synthesized and characterized using IR and NMR spectroscopic techniques. The receptors 1 and 2 bearing hydrogen bonding site demonstrate visually striking color change, UV-vis, and fluorescence responses for F-, AcO-, and OH- over other anions such as Cl-, Br-, H2PO4- and HSO4-. Both the receptors 1 and 2 demonstrate detection limit at micro molar level. Further insight to the nature of interaction between receptors and anions was studied using H-1 NMR titration experiment. In particular, the fluoride of tooth paste and mouthwash in water phase can be detected by receptor 2. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis and spectroscopic properties of some new<i>N,N'</i>-disubstituted thiorueas of potential biological interest
作者:George Y. Sarkis、Essam D. Faisal
DOI:10.1002/jhet.5570220134
日期:1985.1
Thirty-six new N,N'-disubstituted thioureas have been synthesized by the reaction of phenyl-, p-fluorophenyl- and benzoylisothiocyanates with various substituted anilines, aminopyridines and 4-aminoquinolines. The uv, ir and nmr spectral data are presented and discussed.