Adsorption-desorption of silica nanoparticles on poly(ethylene glycol) brushes grafted onto au substrate studied by quartz crystal microbalance
文献类型：期刊论文
| 作者 | Wang Da-peng1,2; Yang Mu-quan1,2; Dong Zhi-xin1,2; Bo Shu-qin1; Ji Xiang-ling1 |
| 刊名 | CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
 |
| 出版日期 | 2013-08-01 |
| 卷号 | 29期号:4页码:820-824 |
| 关键词 | Adsorption-desorption Poly(Ethylene Glycol) Quartz Crystal Microbalance(Qcm) Silica Nanoparticles Atomic Force Microscopy(Afm) |
| ISSN号 | 1005-9040 |
| DOI | 10.1007/s40242-013-2343-0 |
| 英文摘要 | The adsorption-desorption of silica nanoparticles(NPs) on poly(ethylene glycol)(PEG) grafted onto gold(Au) substrate was studied by quartz crystal microbalance with dissipation monitoring(QCM-D) technique. The results of frequency and dissipation show that SiO2 NPs can be adsorbed strongly on PEG-SH brushes at pH of 9.6, and a new dense and rigid construction is formed. Adjusting the pH from 9.6 to 12.3 resulted in the desorption of silica NPs from the PEG brushes because of a significant weakening of the hydrogen bond between the silica NPs and PEG chains. In addition, the viscoelastic properties of the system during the adsorption-desorption process were also analyzed via the relationship between the normalized frequency(Delta f/n) and mass. And the corresponding atomic force microscopy(AFM) images also exhibit morphological changes during the above process, consistent with the changes in viscoelasticity. |
| 语种 | 英语 |
| WOS记录号 | WOS:000322200100042 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46465]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ji Xiang-ling |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Da-peng,Yang Mu-quan,Dong Zhi-xin,et al. Adsorption-desorption of silica nanoparticles on poly(ethylene glycol) brushes grafted onto au substrate studied by quartz crystal microbalance[J]. CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,2013,29(4):820-824. |
| APA | Wang Da-peng,Yang Mu-quan,Dong Zhi-xin,Bo Shu-qin,&Ji Xiang-ling.(2013).Adsorption-desorption of silica nanoparticles on poly(ethylene glycol) brushes grafted onto au substrate studied by quartz crystal microbalance.CHEMICAL RESEARCH IN CHINESE UNIVERSITIES,29(4),820-824. |
| MLA | Wang Da-peng,et al."Adsorption-desorption of silica nanoparticles on poly(ethylene glycol) brushes grafted onto au substrate studied by quartz crystal microbalance".CHEMICAL RESEARCH IN CHINESE UNIVERSITIES 29.4(2013):820-824. |
入库方式： OAI收割
来源：化学研究所
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