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Preparation and micro-mechanical studies of polysiloxane-containing dual-layer film on Au surface by Jing Zhao; Miao Chen; Fengyuan Yan is a Materials Science article available to read on EtoBox.

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A novel polysiloxane-containing self-assembled dual-layer film was grafted onto Au surface with a simple three-step method. Firstly, (3-mercaptopropyl)trimethoxysilane (MPTMS) molecules were selfassembled on Au surfaces through S-Au bond followed by hydrolysis and condensation, then the octadecyltrichlorosilane molecules were attached to the resultant hydroxyl terminated surface via the Si-O-Si bonds. The structure and morphology of the film were characterized by means of contact angle measurement, ellipsometry, attenuated total reflectance Fourier transformed infrared spectra, and atomic force microscopy. The resistant ability of charge transfer in the film forming process was detected by electrochemical techniques. Using force-volume technique, we investigated how the different surface chemical groups influence the surface adhesion properties. The nano-friction properties of the asprepared films were investigated by frictional force microscopy. The results indicated that the dual-layer film fabricated via the hydrolyzation of MPTMS underlayer had significantly less friction. Moreover, compared to the self-assembled monolayer of octadecane thiol, the resultant dual-layer film show

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Author

Jing Zhao; Miao Chen; Fengyuan Yan

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0927-7757)

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)