Supramolecular interaction facilitated block copolymer assembly and preparation of self-organized scaffold for chiral selective transport
Supramolecular interaction facilitated block copolymer assembly and preparation of self-organized scaffold for chiral selective transport
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超分子相互作用促进嵌段共聚物组装和手性选择性运输自组织支架的制备
DOI：
10.1016/j.polymer.2018.09.064
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发表时间：
2018-11
期刊：
影响因子：
4.6
通讯作者：
Congjie Gao
中科院分区：
文献类型：
--
作者：
Zhijuan Sun;Xuan Li;Gudong Zhu;Lixin Xue;Yong Zhou;Zhuan Yi;Congjie Gao
嵌段共聚物(BCP)的自组装强烈依赖于分子组成。然而，有许多BCP的组成低于诱导自组装所需的下限，因此很难从它们制备自组织膜。为了解决这个问题，我们描述了一种通过超分子相互作用促进组装的方法来制备由蠕虫状聚集体组成的自组织膜。以P4VP含量为8.8wt%的聚苯乙烯-嵌段-聚(4-乙烯基吡啶)(PS_4VP)为原料，采用剪切法制备了聚苯乙烯-嵌段-聚(4-乙烯基吡啶)膜。将磺化聚乙二醇(SpeG)与P4VP相互作用，作为PS4VP的超分子添加剂，系统地研究了SpeG/4VP的比例对成膜的影响。结果表明，SpeG不仅有利于PS4VP组装成蠕虫状的聚集体，而且增加了膜的孔隙率和渗透率。然后通过金属沉积和半胱氨酸固定化将自组织膜转化为手性过滤器。结果表明，所制得的手性膜对牛血清白蛋白分子的传递速率和传递系数(αL/D)分别为6.53nmoL/cm2.h和1.73nmoL/cm2.h，均明显高于相同组装条件下制备的组装较差的平面膜。我们的结果表明，添加剂促进的组装对于那些不能自组装成有组织膜的BCP的性能改善至关重要。
Self-assembly of block copolymers (BCPs) is strongly dependent on molecular compositions. However, there are many BCPs having compositions less than the lower limit that is required to induce the self-assembly, and self-organized membranes can be hardly prepared from them. To solve this problem, we described a method to fabricate self-organized membranes consisted of worm-like aggregates through the supramolecular interaction facilitated assembly. The polystyrene-block-poly(4-vinylpyridine) (PS4VP) with a P4VP fraction of 8.8 wt% was used as the material, and membranes were prepared through the SNIPS process. Sulfonated polyethylene glycol (SPEG) interacting with P4VP was developed as the supramolecular additive for the PS4VP, and effects of the ratio of SPEG to 4VP on membrane formation were systematically studied. It was found that SPEG not only facilitated the assembly of PS4VP into worm-like aggregates, but also increased the porosity and permeability of the membranes. The self-organized membranes were then transformed into chiral filters through metal deposition and cysteine immobilization. It was determined that the transport rates and transport coefficient (αL/D) of resultant chiral membranes for bovine serum albumin molecules reached 6.53 nmol/cm2.h and 1.73, respectively, both of which were obviously higher than that of plain membranes prepared from the same BCP with inferior assembly. Our results demonstrated that the additive facilitated assembly was crucial to the performace improvement of those BCPs that were unable to self-assemble into organized membranes.
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影响因子：
2
作者：
L. Gou;Simone Robl;K. Leonhard;H. Lorenz;M. Sordo;Anna Butka;Stefan Kesselheim;M. Wolff;A. Seidel-Morgenstern;K. Schaber
通讯作者：
L. Gou;Simone Robl;K. Leonhard;H. Lorenz;M. Sordo;Anna Butka;Stefan Kesselheim;M. Wolff;A. Seidel-Morgenstern;K. Schaber
用于纳米粒度分级的由重叠嵌段共聚物圆柱形胶束组成的对称渗透膜
影响因子：
5.5
作者：
Yi Zhuan;Zhang Pei-Bin;Liu Cui-Jing;Zhu Li-Ping
通讯作者：
Zhu Li-Ping
影响因子：
9.5
作者：
M. Bryjak;J. Kozłowski;P. Wieczorek;P. Kafarski
通讯作者：
M. Bryjak;J. Kozłowski;P. Wieczorek;P. Kafarski
影响因子：
3.6
作者：
Gottlieb, HE;Kotlyar, V;Nudelman, A
通讯作者：
Nudelman, A
影响因子：
15
作者：
Sidorenko, A;Tokarev, I;Stamm, M
通讯作者：
Stamm, M