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Type: Book chapter
Title: The structure of model membranes studied by vibrational sum frequency spectroscopy
Author: Liljeblad, J.F.D.
Rutland, M.W.
Bulone, V.
Johnson, C.M.
Citation: Trends in Colloid and Interface Science XXIII, 2010 / Bucak, S. (ed./s), vol.137, pp.9-12
Publisher: Springer-Verlag
Issue Date: 2010
Series/Report no.: Progress in Colloid and Polymer Science, v. 137
ISBN: 9783642134609
Editor: Bucak, S.
Statement of
Jonathan F. D. Liljeblad, Mark W. Rutland, Vincent Bulone, C. Magnus Johnson
Abstract: The structure and order of insoluble Langmuir monolayers consisting of 1,2-distearoyl-sn-glycero-3-phosphatidylcholine (DSPC or 18:0 PC) and the surrounding water molecules have been investigated by vibrational sum frequency spectroscopy (VSFS). At surface pressures of 1, 15, and 57 mN/m corresponding to molecular areas of 53, 50, and 43 Å2, respectively, the DSPC molecules formed a well ordered film. Both the VSF signal from the methyl stretching vibrations of the lipid and the surrounding water increased with enhanced surface pressure, as a result of the higher surface density and increased order of the system. Water molecules hydrating the polar parts of the headgroup and in close contact to the hydrocarbon groups of the lipid were observed in all three polarization combinations of the laser beams, and distinguished by their different vibrational frequencies.
Keywords: Vibrational sum frequency spectroscopy
Langmuir film
Rights: © Springer-Verlag Berlin Heidelberg 2010
DOI: 10.1007/978-3-642-13461-6_3
Appears in Collections:Agriculture, Food and Wine publications
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