Nanomechanical fingerprints of individual blocks of a diblock copolymer chain

Langmuir : the ACS Journal of Surfaces and Colloids
Nikhil Gunari, Gilbert C Walker

Abstract

Atomic force microscopy (AFM)-based single polymer chain pulling experiments have been used to study the structural transitions of individual homopolymer chains in water. Polystyrene (PS) showed a three-regime force-extension profile exhibiting a force plateau reminiscent of a first-order transition, as predicted theoretically, whereas poly(methyl methacrylate) (PMMA) showed a characteristic saw-tooth pattern reminiscent of multidomain disassembly behavior. The two distinct structural transtions provide fingerprints for the individual homopolymers, which can be used to identify individual blocks of symmetric and asymmetric PS- b-PMMA diblock copolymer chains.

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Aug 2, 2007·Journal of the American Chemical Society·Nikhil GunariGilbert C Walker

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Citations

Apr 22, 2010·Journal of the American Chemical Society·Isaac T S Li, Gilbert C Walker
Apr 25, 2012·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Ningning Liu, Wenke Zhang
Mar 24, 2009·Biomacromolecules·K H Aaron LauWolfgang Knoll
May 15, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Ying YuXi Zhang
May 7, 2015·Journal of the American Chemical Society·Nobuhiko HosonoE W Meijer

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