Molecular Structure of Polystyrene at Air/Polymer and Solid/Polymer InterfacesPhysical Review Letters
AbstractIR-visible sum-frequency generation(SFG) spectroscopy has been used in a total internal reflection geometry to study the molecular structure of polystyrene (PS) at PS/sapphire and PS/air interfaces, simultaneously. The symmetric vibrational modes of the phenyl rings dominate the SFG spectra at the PS/air interface as compared to the antisymmetric vibrational modes at the PS/sapphire interface. This indicates approximately parallel orientation of the phenyl rings at the PS/air interface while nearly perpendicular orientation at the PS/sapphire interface, with respect to the surface normal.
Citation InformationK. S. Gautam, Alexander D. Schwab, Ali Dhinojwala, D. Zhang, et al.. "Molecular Structure of Polystyrene at Air/Polymer and Solid/Polymer Interfaces" Physical Review Letters Vol. 85 Iss. 18 (2000) p. 3854 - 3857
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