Effect of hydrophobicity inside PEO-PPO-PEO block copolymer micelles on the stabilization of gold nanoparticles: Experiments
文献类型：期刊论文
| 作者 | Chen, Shu; Guo, Chen; Hu, Guo-Hua; Wang, Jing; Ma, Jun-He; Liang, Xiang-Feng; Zheng, Lily; Liu, Hui-Zhou |
| 刊名 | LANGMUIR
 |
| 出版日期 | 2006-11-07 |
| 卷号 | 22期号:23页码:9704-9711 |
| ISSN号 | 0743-7463 |
| 英文摘要 | In this paper we present the effect of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) block copolymer micelles and their hydrophobicity on the stabilization of gold nanoparticles. Gold nanoparticles were prepared by a method developed by Sakai et al. (Sakai, T.; Alexandridis, P. Langmuir 2004, 20, 8426). An absorption centered at 300-400 nm in time-dependent UV spectra provided evidence that the very first step of the synthesis was to form primary gold clusters. Then the gold clusters grew in size and were stabilized by block copolymer micelles. The stabilization capacities of the micelles were modulated by tuning the block copolymer concentration and composition and by adding salts. With good stabilization, gold particles were spherical and uniform in size with a diameter of 5-10 nm. Otherwise they were aggregates with irregular shapes such as triangular, hexagonal, and rodlike. The presence of a small amount of NaF significantly increased the stabilization capacity of the micelles and consequently modified the quality of the gold particles. Using FTIR and H-1 NMR spectroscopy, micellization of the block copolymers and hydrophobicity of the micelles were proven very important for the stabilization. A higher hydrophobicity of the micelle cores was expected to favor the entrapment of primary gold clusters and the stabilization of gold nanoparticles. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Materials Science |
| 关键词[WOS] | SHAPE-CONTROLLED SYNTHESIS ; ANGLE NEUTRON-SCATTERING ; AQUEOUS-SOLUTIONS ; COLLOIDAL GOLD ; AGGREGATION BEHAVIOR ; METAL NANOPARTICLES ; TRIBLOCK COPOLYMERS ; AMBIENT CONDITIONS ; SIZE CONTROL ; TEMPERATURE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000241669800038 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/19209]  |
| 专题 | 过程工程研究所_生化工程国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bioproc Engn, State Key Lab Biochem Engn, Lab Separat Sci & Engn, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.INPL, ENSIC, CNRS, Lab Chem Engn Sci, F-54001 Nancy, France 4.Inst Univ France, F-75005 Paris, France |
| 推荐引用方式 GB/T 7714 | Chen, Shu,Guo, Chen,Hu, Guo-Hua,et al. Effect of hydrophobicity inside PEO-PPO-PEO block copolymer micelles on the stabilization of gold nanoparticles: Experiments[J]. LANGMUIR,2006,22(23):9704-9711. |
| APA | Chen, Shu.,Guo, Chen.,Hu, Guo-Hua.,Wang, Jing.,Ma, Jun-He.,...&Liu, Hui-Zhou.(2006).Effect of hydrophobicity inside PEO-PPO-PEO block copolymer micelles on the stabilization of gold nanoparticles: Experiments.LANGMUIR,22(23),9704-9711. |
| MLA | Chen, Shu,et al."Effect of hydrophobicity inside PEO-PPO-PEO block copolymer micelles on the stabilization of gold nanoparticles: Experiments".LANGMUIR 22.23(2006):9704-9711. |
入库方式： OAI收割
来源：过程工程研究所
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