Inhomogeneous-collapse driven micelle-vesicle transition of amphiphilic block copolymers
文献类型：期刊论文
| 作者 | Liu, Biaolan; Ru, Geying; Feng, Jiwen; Wu, Shuaishuai; Zhang, Yu; Wang, Jian |
| 刊名 | SOFT MATTER
 |
| 出版日期 | 2017-10-21 |
| 卷号 | 13期号:39页码:7106-7111 |
| DOI | 10.1039/c7sm01540b |
| 文献子类 | Article |
| 英文摘要 | Understanding the morphological transition dynamics related to the hydrophilic-hydrophobic interface has been a challenge due to the lack of an effective evaluation method. Herein, nuclear magnetic resonance spectroscopy was employed to study the morphological transition related chain collapse of poly(N, N '-diethylaminoethylmethacrylate)- b-poly(N-isopropylacrylamide) (PDEAEMA133-b-PNIPA322) and poly(N, N '-dimethylaminoethylmethacrylate)- b-poly(N-isopropylacrylamide) (PDMAEMA95-b-PNIPA228) and was proved to be a powerful technique in morphological transition mechanism studies once combined with dynamic light scattering and transmission electron microscopy. Unlike the cooperative coil collapse of two blocks in the PDMAEMA95-b-PNIPA228 alkaline solution upon heating which induces the assembly of a nanostructure (similar to 200 nm) with a hydrophobic core containing both collapsed PDMAEMA and PNIPA segments and a hydrophilic surface part consisting of un-shrunk PDMAEMA and PNIPA segments, PDEAEMA133-b-PNIPA322 with a low-temperature core-shell micelle structure showed a micelle-vesicle transition due to temperature-induced inhomogeneous-collapse of PNIPA. The PNIPA segments in the shell sequentially collapse outside (starting at the core-shell interface), accompanied by a gradual decrease in micelle size. Above the critical temperature, the residual hydrophilic PNIPA segments become too short to stabilize the micelle structure, the micelles then transform into vesicles of a slightly larger size, instead of micelle aggregation and precipitation as normally expected. |
| WOS关键词 | POLY N-ISOPROPYLACRYLAMIDE ; DIBLOCK COPOLYMERS ; RAFT POLYMERIZATION ; PHASE-TRANSITION ; MORPHOLOGICAL TRANSITION ; TRIBLOCK COPOLYMERS ; DRUG-DELIVERY ; END-GROUPS ; NMR ; METHACRYLATE |
| WOS研究方向 | Chemistry ; Materials Science ; Physics ; Polymer Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000412778600015 |
| 资助机构 | National Natural Science Foundation of China(21204099 ; National Natural Science Foundation of China(21204099 ; 11274347 ; 11274347 ; 21221064) ; 21221064) ; National Natural Science Foundation of China(21204099 ; National Natural Science Foundation of China(21204099 ; 11274347 ; 11274347 ; 21221064) ; 21221064) |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/11419]  |
| 专题 | 武汉物理与数学研究所_磁共振基础研究部 |
| 作者单位 | Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Natl Ctr Magnet Resonance Wuhan, Wuhan Inst Phys & Math, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Biaolan,Ru, Geying,Feng, Jiwen,et al. Inhomogeneous-collapse driven micelle-vesicle transition of amphiphilic block copolymers[J]. SOFT MATTER,2017,13(39):7106-7111. |
| APA | Liu, Biaolan,Ru, Geying,Feng, Jiwen,Wu, Shuaishuai,Zhang, Yu,&Wang, Jian.(2017).Inhomogeneous-collapse driven micelle-vesicle transition of amphiphilic block copolymers.SOFT MATTER,13(39),7106-7111. |
| MLA | Liu, Biaolan,et al."Inhomogeneous-collapse driven micelle-vesicle transition of amphiphilic block copolymers".SOFT MATTER 13.39(2017):7106-7111. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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