title: Molecular arrangement in self-assembled azobenzene-containing thiol monolayers at the individual domain level studied through polarized near-field Raman spectroscopy.
abstract: 6-[4-(phenylazo)phenoxy]hexane-1-thiol self-assembled monolayers deposited on a gold surface form domain-like structures possessing a high degree of order with virtually all the molecules being identically oriented with respect to the surface plane. We show that, by using polarized near-field Raman spectroscopy, it is possible to derive the Raman scattering tensor of the ordered layer and consequently, the in-plane molecular orientation at the individual domain level. More generally, this study extends the application domain of the near-field Raman scattering selection rules from crystals to ordered organic structures.
authors.affiliation: LPICM, Ecole Polytechnique, CNRS, 91128 Palaiseau, France; E-Mails: marc.chaigneau@polytechnique.edu (M.C.); gennaro.picardi@dcu.ie (G.P.).
authors.forename: Marc
authors.initials: M
authors.lastname: Chaigneau
authors.forename: Gennaro
authors.initials: G
authors.lastname: Picardi
authors.forename: Razvigor
authors.initials: R
authors.lastname: Ossikovski
mesh_terms: D001391:Azo Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D001391:Azo Compounds; D013438:Sulfhydryl Compounds; C009850:azobenzene