Poly-cytosine-mediated nanotags for SERS detection of Hg2+
文献类型：期刊论文
| 作者 | Qi, L; Xiao, MS; Wang, F; Wang, LH; Ji, W; Man, TT; Aldalbahi, A; Khan, MN; Periyasami, G; Rahaman, M |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2017 |
| 卷号 | 9期号:37页码:14184-14191 |
| 关键词 | Enhanced Raman-scattering Functionalized Gold Nanoparticles Colorimetric Detection Graphene Oxide Silver Nanoparticles Surface-chemistry Dna Coordination Ions Oligonucleotide |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/c7nr05165d |
| 文献子类 | 期刊论文 |
| 英文摘要 | Highly sensitive and selective detection of heavy metal ions, such as Hg2+, is of great importance because the contamination of heavy metal ions has been a serious threat to human health. Herein, we have developed poly-cytosine (polyC)-mediated surface-enhanced Raman scattering (SERS) nanotags as a sensor system for rapid, selective, and sensitive detection of Hg2+ based on thymidine-Hg2+-thymidine (T-Hg2+-T) coordination and polyC-mediated Raman activity. The SERS nanotags exploit the mismatched T-T base pairs to capture Hg2+ form T-Hg2+-T bridges, which induce the aggregation of nanotags giving rise to the drastic amplification in the SERS signals. Moreover, this polyC not only provides the anchoring function to induce the formation of intrinsic silver-cytosine coordination but also engineers the Raman-activity of SERS nanotags by mediating its length. As a result, the polyC-mediated SERS nanotags show an excellent response for Hg2+ in the concentration range from 0.1 to 1000 nM and good selectivity over other metal ions. Given its simple principle and easy operation, the polyC-mediated SERS nanotags, therefore, could serve as a promising sensor for practical use. |
| WOS关键词 | ENHANCED RAMAN-SCATTERING ; FUNCTIONALIZED GOLD NANOPARTICLES ; COLORIMETRIC DETECTION ; GRAPHENE OXIDE ; SILVER NANOPARTICLES ; SURFACE-CHEMISTRY ; DNA ; COORDINATION ; IONS ; OLIGONUCLEOTIDE |
| 语种 | 英语 |
| WOS记录号 | WOS:000411862400035 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28773]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Qi, L,Xiao, MS,Wang, F,et al. Poly-cytosine-mediated nanotags for SERS detection of Hg2+[J]. NANOSCALE,2017,9(37):14184-14191. |
| APA | Qi, L.,Xiao, MS.,Wang, F.,Wang, LH.,Ji, W.,...&Li, L.(2017).Poly-cytosine-mediated nanotags for SERS detection of Hg2+.NANOSCALE,9(37),14184-14191. |
| MLA | Qi, L,et al."Poly-cytosine-mediated nanotags for SERS detection of Hg2+".NANOSCALE 9.37(2017):14184-14191. |
入库方式： OAI收割
来源：上海应用物理研究所
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