Atomic force microscopy imaging of thin films formed by hydrophobing reagents

Simon Biggs, Franz Grieser

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

The hydrophobic films produced on silica plates by a common silylating reagent, trimethylchlorosilane, at the solid/liquid and solid/gas interfaces have been imaged directly using an atomic force microscope. The results obtained here support previous findings that such reactants produce relatively thick inhomogeneous films. For the first time we are able to present direct images of the spatial inhomogeneity of such films. The thin film produced by esterification of the silica plates with 1-dodecanol has also been imaged. In this case, a good, post-reaction, cleanup procedure was determined to be vital in obtaining a uniform thin hydrophobic film. Comparison with a previous ellipsometric study from this laboratory shows broad agreement on the observed film thicknesses and homogeneities for all samples.

Original languageEnglish
Pages (from-to)425-430
Number of pages6
JournalJournal of Colloid and Interface Science
Volume165
Issue number2
DOIs
Publication statusPublished - 1 Jan 1994

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