A novel colorimetric HSO4− sensor in aqueous media
| Autor: | Youming Zhang, Qi Lin, Ping Li, Jun-Qiang Li, Taibao Wei |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Anions
Magnetic Resonance Spectroscopy Schiff base Aqueous solution Aqueous medium Sulfates Chemistry Stereochemistry Water Biosensing Techniques Combinatorial chemistry Atomic and Molecular Physics and Optics Analytical Chemistry chemistry.chemical_compound Spectroscopy Fourier Transform Infrared Proton NMR Spectrophotometry Ultraviolet Titration Naked eye Receptor Anion binding Instrumentation Schiff Bases Spectroscopy |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 90:152-157 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2012.01.026 |
| Popis: | A novel and sensitive anion receptor 3, bearing Schiff base structure, nitrophenyl azobenzol and carboxyl groups, was developed and characterized as a single chemosensor for the recognition of HSO(4)(-) anion. The different responses of UV-vis spectra and color changes of 3 could be applied to the recognition for HSO(4)(-) over other anions such as F(-), CI(-), Br(-), I(-), AcO(-), H(2)PO(4)(-) and CIO(4)(-) by the naked eye. Furthermore, the anion binding interaction of receptor-anion was also studied using UV-vis and (1)H NMR titration which revealed that 3 displayed a remarkable binding ability for the HSO(4)(-) with an association constant K(a)=6.59×10(4) M(-1). And the detection limitation of HSO(4)(-) with the receptor 3 was 2.0×10(-6) mol L(-1) in aqueous solution. Most importantly, the qualitative detection of HSO(4)(-) using receptor 3 was attempted with test kit which was made from receptor 3. |
| Databáze: | OpenAIRE |
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