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Title: Chemical modification of Si(100) surface by consecutive graft polymerization of 4-vinylaniline and aniline
Authors: Ji, L.Y.
Kang, E.T. 
Neoh, K.G. 
Tan, K.L. 
Issue Date: Dec-2000
Source: Ji, L.Y., Kang, E.T., Neoh, K.G., Tan, K.L. (2000-12). Chemical modification of Si(100) surface by consecutive graft polymerization of 4-vinylaniline and aniline. Reactive and Functional Polymers 46 (2) : 145-156. ScholarBank@NUS Repository.
Abstract: Chemical modification of the Ar plasma-pretreated Si(100) surface was carried out first by UV-induced graft copolymerization with 4-vinylaniline (4-VAn) and subsequently by oxidative graft copolymerization with aniline. The graft-modified Si surface was characterized by X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and electrical resistance measurements. The graft copolymerization of 4-VAn on the Si(100) surface (the VAn-g-Si(100) surface) was affected by the Ar plasma pretreatment time of the Si(100) surface, the 4-VAn monomer concentration, and the UV copolymerization time. XPS results showed that the aniline group of the grafted 4-VAn polymer could be utilized for the subsequent oxidative graft copolymerization with aniline (An). The aniline copolymer-modified VAn-g-Si(100) surface (the An-VAn-g-Si surface) exhibited protonation-deprotonation behaviour similar to that of the aniline homopolymer. The resistance of the graft-modified Si surface was in the order of 106 Ω/square. The AFM images revealed that the graft-modified Si surfaces had a uniform morphology. However, the roughness of the Si surface increased after the consecutive grafting processes.
Source Title: Reactive and Functional Polymers
ISSN: 13815148
DOI: 10.1016/S1381-5148(00)00048-1
Appears in Collections:Staff Publications

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