Macroscopic alignment of nanoparticle arrays in soft crystals of cubic and cylindrical polymer micelles.

The European Physical Journal. E, Soft Matter
D C Pozzo, L M Walker

Abstract

We describe a method to organize nanometer-sized hydrophilic particles into ordered arrays by templating them in the soft, micelle-crystal phases (spherical and cylindrical) of a thermoreversible block copolymer. Small-angle neutron scattering (SANS) with contrast variation is used to show that the dispersed particles (in this case, proteins or silica) form structured arrays by being constrained in the interstitial cavities between the polymer micelles in the ordered micelle crystal. Simple shear is used to macroscopically align both phases of the nanocomposites (micelles and particles) into macro-domains. The temperature-induced order-order transition between templates of spherical and cylindrical micelles is demonstrated as a reversible technique to modify the structure of the templated nanoparticle arrays.

References

Nov 5, 2004·Physical Review Letters·Michael R Bockstaller, Edwin L Thomas
Mar 4, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Fatima BouchamaErika Eiser
Jul 21, 2006·The Journal of Physical Chemistry. B·S FörsterR Knott

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Citations

Sep 1, 2009·Macromolecular Rapid Communications·Chia-Jung Wu, Gudrun Schmidt
Aug 27, 2016·Langmuir : the ACS Journal of Surfaces and Colloids·Jinglin ShenShiling Yuan
Mar 5, 2019·Micron : the International Research and Review Journal for Microscopy·Alejandra Londono-CalderonTanya Prozorov
Oct 23, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Biswajit Sarkar, Paschalis Alexandridis

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