A Case of Adaptive Self-Assembly
文献类型：期刊论文
| 作者 | Ding, Yi1; Yang, Yang1; Yang, Lu1,2; Yan, Yun1; Huang, Jianbin1; Stuart, Martien A. Cohen3 |
| 刊名 | ACS NANO
 |
| 出版日期 | 2012-02-01 |
| 卷号 | 6期号:2页码:1004-1010 |
| 关键词 | Electrostatic Micelles Uptake Coordination Polymers Redox |
| ISSN号 | 1936-0851 |
| DOI | 10.1021/nn203453c |
| 英文摘要 | We report in this paper direct observation of redox-induced uptake of a charged species in micelles with a complex coacervate core, using a system consisting of negatively charged iron-coordination polymers and positively charged-b-neutral block co-polyelectrolytes. Neutral, charge-balanced micelles are first prepared by stoichiometric mixing of the oppositely charged components. Upon a redox stimulus, the micelles develop excess charges, which (as proposed In our previous work) most likely lead to sequestration of oppositely charged species, as the charge balance has to be restored. In this work we verify this prediction by using a rigid, rod-like iron coordination polymer, namely, the positively charged MEPE, as the species to be taken up. After uptake of this rigid cargo, the morphology of the micelles was found to transform from spheres to banana-shaped bundles and fibers, which clearly indicate the uptake of MEPE in the micellar core. Our result proves that the redox stimulus indeed induces excess charges In the core, which forces the self-assembled particles to change both composition and shape. As an interesting example of "adaptive self-assembly", our findings also pave the way to novel redox-triggered uptake and release systems. |
| 语种 | 英语 |
| WOS记录号 | WOS:000300757900003 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/47881]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yan, Yun |
| 作者单位 | 1.Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.MIT, Dept Chem Engn, Cambridge, MA 02139 USA 3.Wageningen Univ, Lab Phys Chem & Colloid Sci, NL-6703 HB Wageningen, Netherlands |
| 推荐引用方式 GB/T 7714 | Ding, Yi,Yang, Yang,Yang, Lu,et al. A Case of Adaptive Self-Assembly[J]. ACS NANO,2012,6(2):1004-1010. |
| APA | Ding, Yi,Yang, Yang,Yang, Lu,Yan, Yun,Huang, Jianbin,&Stuart, Martien A. Cohen.(2012).A Case of Adaptive Self-Assembly.ACS NANO,6(2),1004-1010. |
| MLA | Ding, Yi,et al."A Case of Adaptive Self-Assembly".ACS NANO 6.2(2012):1004-1010. |
入库方式： OAI收割
来源：化学研究所
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