Applied Physics B

, Volume 68, Issue 3, pp 549–557 | Cite as

Sum frequency generation (SFG) – surface vibrational spectroscopy studies of buried interfaces: catalytic reaction intermediates on transition metal crystal surfaces at high reactant pressures; polymer surface structures at the solid–gas and solid–liquid interfaces

  • Z. Chen
  • D.H. Gracias
  • G.A. Somorjai
Invited paper

SFG spectra of polyethylene and polypropylene show monolayer sensitivity and reveal temperature-dependent changes of surface structure. For polymer blends, the hydrophobic component segregates to the solid–air interface, and the hydrophilic component segregates at the solid–water interface. Changes in SFG spectra of polymer blends as a function of bulk concentration correlate with changes of contact angle. SFG is an excellent probe of surface-structure and surface-composition changes as the polymer interface is altered.

PACS: 68; 82.65.-i; 82.65.Jv 

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Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • Z. Chen
    • 1
  • D.H. Gracias
    • 1
  • G.A. Somorjai
    • 1
  1. 1.Department of Chemistry, University of California, Berkeley, CA 94720, and Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA (Fax: +1-510/643-9668, E-mail: somorjai@socrates.berkeley.edu)US

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