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SERS study of the conformational transition of the ordering of lipid molecules deposited on a silver electrode
Author(s) -
Guo F. C.,
Chou Y. C.,
Huang W. N.,
Wu WenGuey
Publication year - 1992
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250230802
Subject(s) - dipalmitoylphosphatidylcholine , chemistry , molecule , raman spectroscopy , phase transition , moiety , electrode , raman scattering , adsorption , conformational change , crystallography , chemical physics , stereochemistry , phospholipid , organic chemistry , membrane , biochemistry , physics , quantum mechanics , phosphatidylcholine , optics
Dipalmitoylphosphatidylcholine lipid molecules adsorbed on a silver electrode were found to exhibit a conformational phase transition when investigated by means of surface‐enhanced Raman scattering. The observed order‐to‐disorder transition of the hydrocarbon chain is voltage dependent and exhibits hysteresis phenomena. It is suggested that the adsorption of lipid molecules occurs at the phosphocholine moiety and the kinetic process for the transition involves a voltage‐induced conformational change of the head group.