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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Li, Dan Li, Chun-Yan Li, Yong-Fei Li, Zhi Xu, Fen |
| Description | Author Affiliation: Li D ( Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China.); Li CY ( Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China); Li YF ( College of Chemical Engineering, Xiangtan University, Xiangtan, 411105, PR China.); Li Z ( Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China.); Xu F ( Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan, 411105, PR China. Electronic address: xufen983712@163.com.) |
| Abstract | A rhodamine spirolactam derivative (1) bearing a hydrophilic carboxylic acid group is developed as a fluorescent chemodosimeter for bivalent mercury ions (Hg(2+)) in 100% aqueous solution. It exhibits a highly sensitive 'turn-on' fluorescent response toward Hg(2+) with a 42-fold fluorescence intensity enhancement under 1 equiv. of Hg(2+) added. The chemodosimeter can be applied to the quantification of Hg(2+) with a linear range covering from 3.0 × 10(-7) to 1.0 × 10(-5) M and a detection limit of 9.7 × 10(-8) M. Most importantly, the fluorescence changes of the chemodosimeter are remarkably specific for Hg(2+) in the presence of other metal ions, which meet the selective requirements for practical application. Moreover, the experiment results show that the response behavior of 1 towards Hg(2+) is pH independent in neutral condition (pH 5.0-8.0) and the response is fast (response time less than 3 min). Furthermore, the ring-opening mechanism of the rhodamine spirolactam induced by Hg(2+) was supported by NMR, MS, and DFT theoretical calculations. In addition, the proposed chemodosimeter has been used to detect Hg(2+) in water samples and image Hg(2+) in living cells with satisfying results. |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Journal | Analytica Chimica Acta |
| Volume Number | 934 |
| e-ISSN | 18734324 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2016-08-31 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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