This presentation describes the preparation and characterization of partially fluorinated self-assembled monolayers (FSAMs) on gold that expose hydrocarbon segments of different chain lengths at the FSAM interface. The adsorbates used to form the FSAMs in this study are of the form CH3(CH2)n(CF2)6(CH2)11SH (where n = 0 – 6), in which the interfacial transition dipole (HC–FC) was systematically buried in the film as the alkyl chain was lengthened. The wettabilities of this series of partially fluorinated, progressively alkylated FSAMs were probed using a variety of contacting liquids having varying polarities, with specific attention paid to the influence of cohesive forces within the contacting liquid. In addition, the FSAMs were characterized using X-ray photoelectron spectroscopy, ellipsometry, and polarization-modulation infrared reflection-absorption spectroscopy to obtain insight into the organization and packing of the adsorbates within these unique films. Keywords: Fluorinated Self-Assembled Monolayers (FSAMs), Wettability, Odd-Even Effects, Inverted Dipoles

Wettability and packing structure of partially fluorinated ω-alkylated self-assembled monolayers

251st National Meeting (2016)

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