초록 |
Detailed surface characteristics of polymer films have been investigated by atomistic molecular dynamics simulations and NEXAFS spectroscopy experiments. The geometric confinement of the surfaces and the necessity to minimize the surface energy lead to the significant molecular organization and orientation in polymer surfaces, with their properties strongly depending upon the atomistic monomer structures. The detailed results will be discussed for polyethylene, polytetrafluoroethylene, poly(alkyl methacrylate)s, and polyfluorenes. As compared with polymers, oligomeric electronic materials are much more readily aligned by employing various surface anchoring forces, rendering them highly attractive as polarized-light emitting materials and active semiconducting materials in thin film transistors. |