Please use this identifier to cite or link to this item: https://doi.org/10.1021/la049132m
Title: Surface-grafted viologen for precipitation of silver nanoparticles and their combined bactericidal activities
Authors: Shi, Z. 
Neoh, K.G. 
Kang, E.T. 
Issue Date: 3-Aug-2004
Source: Shi, Z., Neoh, K.G., Kang, E.T. (2004-08-03). Surface-grafted viologen for precipitation of silver nanoparticles and their combined bactericidal activities. Langmuir 20 (16) : 6847-6852. ScholarBank@NUS Repository. https://doi.org/10.1021/la049132m
Abstract: A viologen, N-hexyl-N'-(4-vinylbenzyl)-4,4'-bipyridinium dinitrate (HVVN), was synthesized and subsequently graft-copolymerized on poly(ethylene terephthalate) (PET) films. Silver nanoparticles can be deposited on the surface of the HVVN-PET film through photoinduced reduction of the silver ions in salt solution. The size and distribution of the silver nanoparticles can be varied by changing the reaction time. The pyridinium groups of the HVVN graft-copolymerized on the surface of the substrate possess bactericidal effects on Escherichia coli, and this antibacterial effect can be very significantly enhanced by the incorporation of silver nanoparticles on the HVVN-PET film. The dual functionalities of HVVN and silver remain stable after prolonged immersion in phosphate buffer solution and after aging in a weathering chamber.
Source Title: Langmuir
URI: http://scholarbank.nus.edu.sg/handle/10635/64652
ISSN: 07437463
DOI: 10.1021/la049132m
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