title: Solid surface structure affects liquid order at the polystyrene-self-assembled-monolayer interface.
abstract: We present a combined x-ray and neutron reflectivity study characterizing the interface between polystyrene (PS) and silanized surfaces. Motivated by the large difference in slip velocity of PS on top of dodecyl-trichlorosilane (DTS) and octadecyl-trichlorosilane (OTS) found in previous studies, these two systems were chosen for the present investigation. The results reveal the molecular conformation of PS on silanized silicon. Differences in the molecular tilt of OTS and DTS are replicated by the adjacent phenyl rings of the PS. We discuss our findings in terms of a potential link between the microscopic interfacial structure and dynamic properties of polymeric liquids at interfaces.
authors: Institut Laue-Langevin, 38042 Grenoble, France. gutfreund@ill.eu
authors: Philipp
authors: P
authors: Gutfreund
authors: Oliver
authors: O
authors: Bäumchen
authors: Renate
authors: R
authors: Fetzer
authors: Dorothee
authors: D
authors: van der Grinten
authors: Marco
authors: M
authors: Maccarini
authors: Karin
authors: K
authors: Jacobs
authors: Hartmut
authors: H
authors: Zabel
authors: Max
authors: M
authors: Wolff
mesh_terms: D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D008956:Models, Chemical; D008958:Models, Molecular; D011137:Polystyrenes / Q000737:chemistry*; D012212:Rheology / Q000379:methods*; D013499:Surface Properties
chemical_list: D003102:Colloids; D011137:Polystyrenes