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Bowen, James; Manickam, Mayandithevar; Evans, Stephen D.; Critchley, Kevin; Kendall, Kevin and Preece, Jon A.
(2008).
DOI: https://doi.org/10.1016/j.tsf.2007.11.002
Abstract
The effect of pH on the adhesion of silica and polystyrene latex nanoparticles, presenting hydroxyl and carboxylic acid surface chemistries respectively, to self-assembled monolayers (SAMs) has been investigated. The SAMs studied were 1-dodecanethiol, 11-mercaptoundecanoic acid and an original pyridine-terminated SAM. Adhesion of nanoparticles to the SAMs was found to decrease with increasing pH due to increased repulsive forces between surfaces, as a result of the deprotonation of surface moieties on the nanoparticles. A range of surface morphologies for the adsorbed nanoparticles was observed for the systems studied.
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About
- Item ORO ID
- 43198
- Item Type
- Journal Item
- ISSN
- 0040-6090
- Keywords
- self-assembled monolayer; nanoparticle; adhesion; surface chemistry; pKa
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2007 Elsevier B. V.
- Related URLs
- Depositing User
- James Bowen