Ethanol-induced formation of silver nanoparticle aggregates for highly active SERS substrates and application in DNA detection
文献类型：期刊论文
| 作者 | Sun, Lanlan; Song, Yonghai; Wang, Li; Guo, Cunlan; Sun, Yujing; Liu, Zhelin; Li, Zhuang |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2008-02-07 |
| 卷号 | 112期号:5页码:1415-1422 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/jp075550z |
| 通讯作者 | Li, Zhuang(zli@ciac.jl.cn) |
| 英文摘要 | A controllable silver nanoparticle aggregate system has been synthesized by adding different amounts of ethanol to cetyltrimethylammonium bromide (CTAB) capped silver nanoparticles (Ag-nps), which could be used as highly efficient surface-enhanced Raman scattering (SERS) active substrates. This ethanol-induced aggregation can be attributed to preferential dissolution of CTAB into ethanol, which leads a partial removal of the protective CTAB layer on Ag-nps. The optical and morphological properties of these aggregates under various volumes of ethanol were explored via UV-vis spectroscopy and atomic force microscopy. Two common probe molecules, Rhodamine 6G (R6G) and 4-aminothiophenol (4-ATP) were used for testing the SERS activity on these substrates at very low concentrations. It was found that the SERS enhancement ability is dependent on the ethanol volume used. The SERS enhancement factors of 4-ATP were estimated to be as large as 8.1 x 10(8) for b(2) vibration modes and 6.8 x 10(6) for a(1) vibration modes. Good stability of the substrates was demonstrated by measuring the Raman activity with time. The optimized SERS-active substrate with the largest enhancement ability shown in this study could be used to detect double-strand DNA. The great advantage for this SERS-based DNA detection is that a dye label is not needed. It showed the potential of this Ag-nps aggregate system as a convenient and powerful SERS-active substrate for DNA detection. |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000252814800019 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.imr.ac.cn/handle/321006/92526]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Zhuang |
| 作者单位 | Chinese Acad Sci, State Key Lab Electroanalyt Chem, Changchun Inst Appl Chem, Grad Sch Chinese Acad Sci, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Lanlan,Song, Yonghai,Wang, Li,et al. Ethanol-induced formation of silver nanoparticle aggregates for highly active SERS substrates and application in DNA detection[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2008,112(5):1415-1422. |
| APA | Sun, Lanlan.,Song, Yonghai.,Wang, Li.,Guo, Cunlan.,Sun, Yujing.,...&Li, Zhuang.(2008).Ethanol-induced formation of silver nanoparticle aggregates for highly active SERS substrates and application in DNA detection.JOURNAL OF PHYSICAL CHEMISTRY C,112(5),1415-1422. |
| MLA | Sun, Lanlan,et al."Ethanol-induced formation of silver nanoparticle aggregates for highly active SERS substrates and application in DNA detection".JOURNAL OF PHYSICAL CHEMISTRY C 112.5(2008):1415-1422. |
入库方式： OAI收割
来源：金属研究所
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