Nanoscale patterning through self-assembly of hydrophilic block copolymers with one chain end constrained to surface

被引：19

作者：

Gao, Xiang ^{[1
]}

Zhu, Shiping ^{[1
]}

Sheardown, Heather ^{[1
]}

Brash, John L. ^{[1
]}

机构：

[1] McMaster Univ, Dept Chem Engn, Hamilton, ON L8S 4L7, Canada

来源：

POLYMER | 2010年 / 51卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Nanopatterning; Polymer brush; Hydrophilic block copolymer; TRANSFER RADICAL POLYMERIZATION; TETHERED DIBLOCK COPOLYMERS; MULTIVARIANT ASSEMBLIES; BIOMEDICAL APPLICATIONS; SELECTIVE SOLVENTS; SOFT LITHOGRAPHY; SILICON SURFACES; NANO-OBJECTS; PMMA BRUSHES; PROTEIN;

D O I：

10.1016/j.polymer.2010.02.021

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(oligo(ethylene glycol) methacrylate) (POEGMA)-block-poly(2-(methacryloyloxy) ethyl trimethy-ammonium chloride) (PMETAC) brushes were synthesized on silicon wafer surfaces by a surface-initiated atom transfer radical polymerization (ATRP) method. Salt-triggered collapse of the polyelectrolyte in solution was employed to induce phase segregations between the two hydrophilic blocks and thus to develop nanoscale patterns. The smallest feature size was about 10 nm and was tunable on the nanoscale. Various patterns including spherical aggregates, wormlike aggregates, and line patterns were obtained through adjusting the upper block layer thickness. These nanopatterns could switch between the different morphologies through the treatment of selective solvents. The adsorption behavior of fibrinogen on these patterns was also studied by ellipsometry, water contact angle measurement, AFM and radio labelling method. The results showed that these nanopatterns possess the ability to pattern proteins. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1771 / 1778

页数：8

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