Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Poly-cytosine-mediated nanotags for SERS detection of Hg2+ | |
| Qi, L; Xiao, MS; Wang, F; Wang, LH; Ji, W; Man, TT; Aldalbahi, A; Khan, MN; Periyasami, G; Rahaman, M; Alrohaili, A; Qu, XM; Pei, H; Wang, C; Li, L | |
| 2017 | |
| Source Publication | NANOSCALE
 |
| ISSN | 2040-3364 |
| Volume | 9Issue:37Pages:14184-14191 |
| Subtype | 期刊论文 |
| Abstract | 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. |
| Keyword | Enhanced Raman-scattering Functionalized Gold Nanoparticles Colorimetric Detection Graphene Oxide Silver Nanoparticles Surface-chemistry Dna Coordination Ions Oligonucleotide |
| DOI | 10.1039/c7nr05165d |
| WOS Keyword | ENHANCED RAMAN-SCATTERING ; FUNCTIONALIZED GOLD NANOPARTICLES ; COLORIMETRIC DETECTION ; GRAPHENE OXIDE ; SILVER NANOPARTICLES ; SURFACE-CHEMISTRY ; DNA ; COORDINATION ; IONS ; OLIGONUCLEOTIDE |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000411862400035 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/28773 |
| Collection | 中科院上海应用物理研究所2011-2018年 |
| Recommended Citation 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. |
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| Poly-cytosine-mediat（1936KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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