One-dimensional swelling of a pH-dependent nanostructure based on ABC triblock terpolymers

被引：37

作者：

Ludwigs, S ^{[1
]}

Schmidt, K ^{[1
]}

Krausch, G ^{[1
]}

机构：

[1] Univ Bayreuth, BZKG, D-65440 Bayreuth, Germany

来源：

MACROMOLECULES | 2005年 / 38卷 / 06期

关键词：

D O I：

10.1021/ma047812q

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We present a novel route to prepare pH-dependent nanostructures from highly ordered thin films of poly(styrene)-block-poly(2-vinylpyridine)-block-poly(tert-butyl methacrylate) triblock terpolymers. Using a polymer-analogous reaction, we modify the chemical nature of the block components without altering the overall microdomain structure. In particular, we perform an acid-catalyzed hydrolysis of the poly(tert-butyl methacrylate) block to poly(methacrylic acid) in a microphase-separated perforated lamella (PL) structure. Scanning force microscopy in an aqueous environment is used to follow structural changes of the PL phase as a function of the pH value. Due to the particular microdomain structure of the precursor triblock terpolymer, an almost perfect one-dimensional swelling of the films is observed with increasing pH.

引用

页码：2376 / 2382

页数：7

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[1]

ADVINCULA CR, 2004, POLYM BRUSHES

[2] NEUTRON REFLECTIVITY STUDIES OF THE SURFACE-INDUCED ORDERING OF DIBLOCK COPOLYMER FILMS [J].