Dissipative particle dynamics simulation of gold nanoparticles stabilization by PEO-PPO-PEO block copolymer micelles
文献类型：期刊论文
| 作者 | Chen, Shu; Guo, Chen; Hu, Guo-Hua; Liu, Hui-Zhou; Liang, Xiang-Feng; Wang, Jing; Ma, Jun-He; Zheng, Lily |
| 刊名 | COLLOID AND POLYMER SCIENCE
 |
| 出版日期 | 2007-11-01 |
| 卷号 | 285期号:14页码:1543-1552 |
| 关键词 | dissipative particle dynamics block copolymer micelle nanoparticle stabilization |
| ISSN号 | 0303-402X |
| 其他题名 | Colloid Polym. Sci. |
| 中文摘要 | Dissipative particle dynamics (DPD) was used to simulate the formation and stabilization of gold nanoparticles in poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) block copolymer micelles. Primary gold clusters that were experimentally observed in the early stage of gold nanoparticle formation were modeled as gold bead in DPD simulation. It showed that gold beads were wrapped by the block copolymer and aggregated into spherical particles inside the micelles and forming stable Pluronic-gold colloids with two-layer structures. Increasing Pluronic concentration, molecular weight, and PPO block length led to the formation of more uniform and more stable gold nanoparticles. Density profiles of water beads suggested that the micelles, especially the hydrophobicity of the micellar cores, played an important role in stabilizing gold nanoparticles. Dynamic process indicated that the formation of gold nanoparticles was controlled by the competition between aggregation of primary gold clusters and the stabilization by micelles of block copolymers.. The DPD simulation results of gold-copolymer-water system agree well with previous experiments, while more structure information on microscopic level could be provided. |
| 英文摘要 | Dissipative particle dynamics (DPD) was used to simulate the formation and stabilization of gold nanoparticles in poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) block copolymer micelles. Primary gold clusters that were experimentally observed in the early stage of gold nanoparticle formation were modeled as gold bead in DPD simulation. It showed that gold beads were wrapped by the block copolymer and aggregated into spherical particles inside the micelles and forming stable Pluronic-gold colloids with two-layer structures. Increasing Pluronic concentration, molecular weight, and PPO block length led to the formation of more uniform and more stable gold nanoparticles. Density profiles of water beads suggested that the micelles, especially the hydrophobicity of the micellar cores, played an important role in stabilizing gold nanoparticles. Dynamic process indicated that the formation of gold nanoparticles was controlled by the competition between aggregation of primary gold clusters and the stabilization by micelles of block copolymers.. The DPD simulation results of gold-copolymer-water system agree well with previous experiments, while more structure information on microscopic level could be provided. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical ; Polymer Science |
| 研究领域[WOS] | Chemistry ; Polymer Science |
| 关键词[WOS] | MESOSCOPIC SIMULATION ; PHASE-BEHAVIOR ; AQUEOUS-SOLUTION ; MICROPHASE SEPARATION ; AMPHIPHILIC MOLECULES ; POLYMER ; SURFACE ; SYSTEM ; TEMPERATURE ; TRANSITION |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000250630100003 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3294]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Lab Separat Sci & Engn, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Ecole Natl Super Ind Chim, Inst Natl Polytech Lorraine, CNRS, Lab Chem Engn Sci, F-54001 Nancy, France 4.Maison Univ, 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. Dissipative particle dynamics simulation of gold nanoparticles stabilization by PEO-PPO-PEO block copolymer micelles[J]. COLLOID AND POLYMER SCIENCE,2007,285(14):1543-1552. |
| APA | Chen, Shu.,Guo, Chen.,Hu, Guo-Hua.,Liu, Hui-Zhou.,Liang, Xiang-Feng.,...&Zheng, Lily.(2007).Dissipative particle dynamics simulation of gold nanoparticles stabilization by PEO-PPO-PEO block copolymer micelles.COLLOID AND POLYMER SCIENCE,285(14),1543-1552. |
| MLA | Chen, Shu,et al."Dissipative particle dynamics simulation of gold nanoparticles stabilization by PEO-PPO-PEO block copolymer micelles".COLLOID AND POLYMER SCIENCE 285.14(2007):1543-1552. |
入库方式： OAI收割
来源：过程工程研究所
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