|
|||||
|
|
Water-soluble homo-oligonucleotide stabilized fluorescent silver nanoclusters as fluorescent probes for mercury ion |
|
| Authors: | Rui-Zhi Wang Dan-Ling Zhou Hong Huang Ming Zhang Jiu-Ju Feng Ai-Jun Wang |
| Affiliation: | 1. School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China 2. College of Geography and Environmental Science, College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 321004, China |
| Abstract: | Water–soluble fluorescent silver nanoclusters (Ag NCs) were prepared with the assistance of commercially available polyinosinic acid (PI) or polycytidylic acid (PC). The fluorescence of the Ag NCs is effectively quenched by trace mercury(II) ions, which can be applied for their detection. The response of the Ag NCs prepared with PI to Hg(II) ion is linear in the Hg(II) concentration range from 0.05 to 1.0 μM (R2?=?0.9873), and from 0.5 to 10 μM of Hg(II) (R2?=?0.9971) for Ag NCs prepared with PC. The detection limits are 3.0 nM and 9.0 nM (at an S/N of 3), respectively. The method is simple, sensitive and fairly selective. Water-soluble fluorescent Ag nanoclusters (NCs) were facilely prepared using commercially available polyinosinic acid or polycytidylic acid. The fluorescence intensity of the as-prepared Ag NCs was effectively quenched by trace Hg2+, which was used for the detection of Hg2+ in water samples with good performance. |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ | |