Hexagonally ordered nanoparticles templated using a block copolymer film through Coulombic interactions.

Nanotechnology

Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115, USA.

Published: February 2013

We present a novel and simple method for forming hexagonal gold nanoparticle arrays that uses Coulombic interactions between negatively charged gold nanoparticles on positively charged vertically oriented poly(4-vinylpyridine) cylinders formed in a spin cast polystyrene-b-poly(4-vinylpyridine) block copolymer film. Exposure of the block copolymer film to dibromobutane vapor quaternizes and crosslinks the poly(4-vinylpyridine) domains which allows for the templated deposition of gold nanoparticles into a self-assembled hexagonal array through electrostatic interactions. These systems can form the basis for sensors or next generation nanoparticle based electronics.

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Source
http://dx.doi.org/10.1088/0957-4484/24/4/045305DOI Listing

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