科研之友
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摘要
A new series of azobenzene dyes, which possessed colorimetric and ratiometric recognition to Hg(2 ) based on the mechanism of internal charge transfer (ICT), was developed and characterized. The molecules involving azo and imino functional groups can coordinate with Hg(2 ) to result in a large blue shift from 453 to 363 nm corresponding to a notable color change from orange to pale yellow in aqueous methanol solution (H(2)O/CH(3)OH=1/4, V/V), which can be applied to naked eye detection of Hg(2 ). The sensitivity, selectivity and binding mode of the sensors to Hg(2 ) were investigated by UV-Vis spectroscopy.
- 出版日期2009-9
- 单位江苏理工学院; 南京大学
