Janus Silica Hollow Spheres Prepared via Interfacial Biosilicification
文献类型：期刊论文
| 作者 | Sheng, Li1; Chen, Hong1; Fu, Wenxin1; Li, Zhibo1,2 |
| 刊名 | LANGMUIR
 |
| 出版日期 | 2015-11-10 |
| 卷号 | 31期号:44页码:11964-11970 |
| 英文摘要 | A poly(ethylene glycol)-b-poly(L-lysine)-b-poly(styrene) (PEG-PLL-PS) triblock copolymer, which contains a cationic PLL block as the middle block, is synthesized via a combination of ring-opening polymerization (ROP) and atom-transfer radical polymerization (ATRP). The PEG-PLL-PS (ELS) triblock is employed as a macromolecular surfactant to form a stable oil-in-water (O/W) emulsion, which is subsequently used as the template to prepare Janus silica hollow spheres (JHS) via a one-pot biosilicification reaction. For the emulsion template, the middle PLL block assembles at the O/W interface and directs the biomimetic silica synthesis in the presence of phosphate buffer and silicic acid precursors. This biosilicification process takes place only in the intermediate layer between water and the organic interior phase, leading to the formation of silica JHSs with hydrophobic PS chains tethered to the inner surface and PEG attached to the outer surface. The three-layer JHSs, namely, PEG/silica-polylysine/PS composites, were verified by electron microscopy. Upon further breaking these JHSs into species, polymer-grafted Janus silica nanoplates (JPLs) can be obtained. Our studies provide an efficient one-step method for preparing hybrid silica Janus structures within minutes. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/29225]  |
| 专题 | 化学研究所_高分子物理与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Lab Polymer Phys & Chem, Beijing 100190, Peoples R China 2.Qingdao Univ Sci & Technol, Sch Polymer Sci & Engn, Qingdao 266042, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sheng, Li,Chen, Hong,Fu, Wenxin,et al. Janus Silica Hollow Spheres Prepared via Interfacial Biosilicification[J]. LANGMUIR,2015,31(44):11964-11970. |
| APA | Sheng, Li,Chen, Hong,Fu, Wenxin,&Li, Zhibo.(2015).Janus Silica Hollow Spheres Prepared via Interfacial Biosilicification.LANGMUIR,31(44),11964-11970. |
| MLA | Sheng, Li,et al."Janus Silica Hollow Spheres Prepared via Interfacial Biosilicification".LANGMUIR 31.44(2015):11964-11970. |
入库方式： OAI收割
来源：化学研究所
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