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Article
Molecular Structure of Polystyrene at Air/Polymer and Solid/Polymer Interfaces
Physical Review Letters
  • K. S. Gautam, University of Akron Main Campus
  • Alexander D. Schwab, University of Akron Main Campus
  • Ali Dhinojwala, University of Akron Main Campus
  • D. Zhang
  • S. M. Dougal
  • M. S. Yeganeh
Document Type
Article
Publication Date
10-30-2000
Disciplines
Abstract
IR-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 Information
K. 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
Available at: http://works.bepress.com/ali_dhinojwala/7/