科研之友
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摘要
A new isoindoline-based highly efficient turn-on fluorescent chemodosimeter S with a thioamide functionality as a binding site for selective detection of Hg2+ ion has been developed. The chemodosimeter S showed an extreme selectivity for detection of Hg2+ ion among various two and three-valent metal ions in acetonitrile/ water (70/30, v/v). It was found that, in the presence of Hg2+ ion the non-fluorescent chemodosimeter S was efficiently and rapidly desulfurized to the corresponding highly fluorescent amide 1.A good linear relationship was shown between the fluorescence intensity and the concentration of Hg2+ within the range of 0-1 pM, with a detection limit of 2.03 x 10(-8) M.
- 出版日期2017-5-5
