A novel colorimetric HSO<sub>4sub><sup>鈭?/sup> sensor in aqueous media
- 作者：Ping Li<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>csup> ; You-Ming Zhang<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>csup> ; Qi Lin<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>csup> ; Jun-Qiang Li<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>csup> ; Tai-Bao Wei<sup>asup><sup> ; sup><sup>bsup><sup> ; sup><sup>csup><sup> ; sup><sup>weitaibao@126.comsup>
- 关键词：Colorimetric sensors ; Hydrogensulfate recognition ; Aqueous solution ; Colorimetric test kit
- 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
- 出版年：2012
- 期刊代码：99_13861425
- 类别：ch
- 出版时间：May, 2012
- 卷：90
- 期：Complete
- 页码：152-157
- 文件大小：639 K
摘要
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<sub>4sub><sup>鈭?/sup> anion. The different responses of UV-vis spectra and color changes of 3 could be applied to the recognition for HSO<sub>4sub><sup>鈭?/sup> over other anions such as F<sup>鈭?/sup>, CI<sup>鈭?/sup>, Br<sup>鈭?/sup>, I<sup>鈭?/sup>, AcO<sup>鈭?/sup>, H<sub>2sub>PO<sub>4sub><sup>鈭?/sup> and CIO<sub>4sub><sup>鈭?/sup> by the naked eye. Furthermore, the anion binding interaction of receptor-anion was also studied using UV-vis and <sup>1sup>H NMR titration which revealed that 3 displayed a remarkable binding ability for the HSO<sub>4sub><sup>鈭?/sup> with an association constant K<sub>asub> = 6.59 脳 10<sup>4sup> M<sup>鈭?sup>. And the detection limitation of HSO<sub>4sub><sup>鈭?/sup> with the receptor 3 was 2.0 脳 10<sup>鈭?sup> mol L<sup>鈭?sup> in aqueous solution. Most importantly, the qualitative detection of HSO<sub>4sub><sup>鈭?/sup> using receptor 3 was attempted with test kit which was made from receptor 3.