Phase Behavior of Poly(sulfobetaine methacrylate)-Grafted Silica Nanoparticles and Their Stability in Protein Solutions
文献类型：期刊论文
| 作者 | Dong, Zhixin; Mao, Jun; Yang, Muquan; Wang, Dapeng; Bo, Shuqin; Ji, Xiangling |
| 刊名 | LANGMUIR
 |
| 出版日期 | 2011-12-20 |
| 卷号 | 27期号:24页码:15282-15291 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/la2038558 |
| 英文摘要 | Biocompatible and zwitterionic poly(sulfobetaine methacrylate) (PSBMA) was grafted onto the surface of initiator-modified silica nanopartides via surface-initiated atom transfer radical polymerization. The resultant samples were characterized via nuclear magnetic resonance, Fourier transform infrared spectroscopy, transmission electron microscopy, and thermogravimetric analysis. Their molecular weights and molecular weight distributions were determined via gel permeation chromatography after the removal of silica by etching. Moreover, the phase behavior of these polyzwitterionic-grafted silica nanoparticles in aqueous solutions and stability in protein/PBS solutions were systematically investigated. Dynamic light scattering and UV-visible spectroscopy results indicate that the silica-g-PSBMA nanoparticles exhibit an upper critical solution temperature (UCST) in aqueous solutions, which can be controlled by varying the PSBMA molecular weight, ionic strength, silica-g-PSBMA nanoparticle concentration, and solvent polarity. The UCSTs shift toward high temperatures with increasing PSBMA molecular weight and silica-g-PSBMA nanoparticle concentration. However, increasing the ionic strength and solvent polarity leads to a lowering of the UCSTs. The silica-g-PSBMA nanoparticles are stable for at least 72 h in both negative and positive protein/PBS solutions at 37 degrees C. The current study is crucial for the translation of polyzwitterionic solution behavior to surfaces to exploit their diverse properties in the development of new, smart, and responsive coatings. |
| 语种 | 英语 |
| WOS记录号 | WOS:000298118500068 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/73411]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ji, Xiangling |
| 作者单位 | Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Grad Sch, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Zhixin,Mao, Jun,Yang, Muquan,et al. Phase Behavior of Poly(sulfobetaine methacrylate)-Grafted Silica Nanoparticles and Their Stability in Protein Solutions[J]. LANGMUIR,2011,27(24):15282-15291. |
| APA | Dong, Zhixin,Mao, Jun,Yang, Muquan,Wang, Dapeng,Bo, Shuqin,&Ji, Xiangling.(2011).Phase Behavior of Poly(sulfobetaine methacrylate)-Grafted Silica Nanoparticles and Their Stability in Protein Solutions.LANGMUIR,27(24),15282-15291. |
| MLA | Dong, Zhixin,et al."Phase Behavior of Poly(sulfobetaine methacrylate)-Grafted Silica Nanoparticles and Their Stability in Protein Solutions".LANGMUIR 27.24(2011):15282-15291. |
入库方式： OAI收割
来源：化学研究所
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