Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s
文献类型：期刊论文
| 作者 | Li, Dongxiang; He, Qiang; Zhu, Haifeng; Tao, Cheng; Li, Junbai |
| 刊名 | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
 |
| 出版日期 | 2007-09-01 |
| 卷号 | 7期号:9页码:3089-3094 |
| 关键词 | Gold Nanoparticles Dispersity Carboxyl Alkanethiol Nonionic Surfactant Poly(Ethylene Glycol) |
| ISSN号 | 1533-4880 |
| DOI | 10.1166/jnn.2007.637 |
| 英文摘要 | The physisorption of nonionic surfactant poly(ethylene glycol) (PEG) series and the chemisorption of carboxyl-terminated alkanethiols on surface of gold nanoparticles (AuNPs) were investigated. The physical adsorption of oligo(ethylene glycol) moieties introduced a tiny red shift of surface plasmon resonance (SPR) of AuNPs, indicating the formation of a protective layer of PEG molecules around gold surface. The subsequent chemisorption of to-carboxyl alkanethiols was performed under the protection of PEG molecules, and the aggregation of metal nanoparticles did not appear by TEM observation. The successful adsorption of (omega-carboxyl alkanethiol on gold surface was demonstrated according to FT-IR spectrum and the prior adsorbed PEG molecules could be washed out by centrifugation. Furthermore, the presence of nonionic surfactant even displayed a protective role in centrifugal process. The dispersity of modified AuNPs with peripheral functional groups was enhanced under the protection of PEG molecules as an important advantage in further biological applications. |
| 语种 | 英语 |
| WOS记录号 | WOS:000250388400008 |
| 出版者 | AMER SCIENTIFIC PUBLISHERS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62827]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Junbai |
| 作者单位 | 1.CAS, Key Lab Colloid & Interface Sci, Inst Chem, Int Joint Lab,Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.Max Planck Inst Colloids & Interfaces, D-14476 Golm, Germany |
| 推荐引用方式 GB/T 7714 | Li, Dongxiang,He, Qiang,Zhu, Haifeng,et al. Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2007,7(9):3089-3094. |
| APA | Li, Dongxiang,He, Qiang,Zhu, Haifeng,Tao, Cheng,&Li, Junbai.(2007).Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s.JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,7(9),3089-3094. |
| MLA | Li, Dongxiang,et al."Enhanced dispersity of gold nanoparticles modified by omega-carboxyl alkanethiols under the impact of poly(ethylene glycol)s".JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 7.9(2007):3089-3094. |
入库方式： OAI收割
来源：化学研究所
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