摘要
A disulfide linked naphthalimide dimer probe was designed for mercury ion (Hg 2+) recognition in this work. The recognition was based on the strong affinity of mercury for sulfur. The experimental results revealed that the probe exhibited high selectivity and sensitivity toward Hg 2+ in comparison to other metal ions via a turn-on and reversible response to Hg 2+ in neutral buffer solution. More importantly, the probe demonstrated a linear response for Hg 2+ over a concentration range from 0 to 150 μM with a detection limit of 0.38 μM, which is just the limit of the safe concentration for humans. Upon addition of 150 μM Hg 2+, the enhancement of fluorescence reached a maximum (~7-fold). The performances of the probe indicated that it could meet the selectivity requirements for biomedical and environmental application and also was sensitive enough to detect Hg 2+ in environmental and biological samples.
源语言 | 英语 |
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页(从-至) | 1343-1348 |
页数 | 6 |
期刊 | Journal of Fluorescence |
卷 | 21 |
期 | 4 |
DOI | |
出版状态 | 已出版 - 7月 2011 |