Crafting Threads of Diblock Copolymer Micelles via Flow-Enabled Self-Assembly

被引：80

作者：

Li, Bo ^{[1
]}

Han, Wei ^{[1
]}

Jiang, Beibei ^{[1
]}

Lin, Zhiqun ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

ACS NANO | 2014年 / 8卷 / 03期

基金：

美国国家科学基金会;

关键词：

flow-enabled self-assembly; amphiphilic diblock copolymer micelles; minimum spacing; hierarchical structures; BLOCK-COPOLYMER; MONOLAYER FILMS; INORGANIC NANOPARTICLES; GOLD NANOPARTICLES; SIMPLE ROUTE; BOTTOM-UP; ARRAYS; EVAPORATION; NANOWIRES; PATTERNS;

D O I：

10.1021/nn500193y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hierarchically assembled amphiphilic diblock copolymer micelles were exquisitely crafted over large areas by capitalizing on two concurrent self-assembling processes at different length scales, namely, the periodic threads composed of a monolayer or a bilayer of diblock copolymer micelles precisely positioned by flow-enabled self-assembly (FESA) on the microscopic scale and the self-assembly of amphiphilic diblock copolymer micelles into ordered arrays within an individual thread on the nanometer scale. A minimum spacing between two adjacent threads lambda(min) was observed. A model was proposed to rationalize the relationship between the thread width and lambda(min). Such FESA of diblock copolymer micelles is remarkably controllable and easy to implement. It opens up possibilities for lithography-free positioning and patterning of diblock copolymer micelles for various applications in template fabrication of periodic inorganic nanostructures, nanoelectronics, optoelectronics, magnetic devices, and biotechnology.

引用

页码：2936 / 2942

页数：7

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