Control of Nanoparticle Location in Block Copolymers

A simple procedure is described to incorporate gold nanoparticles and control their location within symmetric poly(styrene-b-2 vinyl pyridine) (PS-PVP) diblock copolymers. Gold nanoparticles coated with thiol-terminated PS and/or PVP homopolymer chains (M n ∼ 1300 and 1500 g/mol, respectively) are i...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2005-04, Vol.127 (14), p.5036-5037
Main Authors: Chiu, Julia J, Kim, Bumjoon J, Kramer, Edward J, Pine, David J
Format: Article
Language:English
Subjects:
Analysis and structure
Applied sciences
Exact sciences and technology
Polymer industry, paints, wood
Properties and testing
Technology of polymers
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Summary:A simple procedure is described to incorporate gold nanoparticles and control their location within symmetric poly(styrene-b-2 vinyl pyridine) (PS-PVP) diblock copolymers. Gold nanoparticles coated with thiol-terminated PS and/or PVP homopolymer chains (M n ∼ 1300 and 1500 g/mol, respectively) are incorporated into alternating lamellar layers of PS and PVP (total M n ∼ 196 500 g/mol). The location of the particles is controlled by varying the composition of ligands on the particle surfaces. In particular, gold particles coated with 100% PS or PVP reside near the center of the respective polymer domains, while particles coated with a mixture of both homopolymers reside at the interfaces between the two blocks.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja050376i