Quantum Chemical Calculations of Electron Transfer at Metal/Polymer Interfaces

Evaluation of Electronic States of Polymer Surface Using Photoelectron Spectroscopy in Air

“…The dangling bonds of the polymers are in an inactive state because of gas adsorption on the polymer surface under atmospheric conditions. When mechanical and physical stresses are applied to the polymer surface by rubbing with a metal ring, the newly formed surface states are dependent on the destruction of the gas absorption layer and the surface structure [7,12]. Under the hypothesis that surface destruction, i.e., rubbing with metal, led to an increase in the density of surface states of the polymer, in the next section we discuss the strict contribution of the chemical structure of the polymer as related to the DOS of the polymer surface and the charging phenomena.…”

“…1-3 There have been numerous investigations of dielectrics in contact with metals or other materials [1][2][3][4][5][6][7]. Electrification of solid dielectrics is an important electrical property and has been extensively investigated from the fundamental and practical standpoints, especially in technologies such as electrophotography and electrostatic separation.…”

“…Electrification of solid dielectrics is an important electrical property and has been extensively investigated from the fundamental and practical standpoints, especially in technologies such as electrophotography and electrostatic separation. Electrification studies have made possible the interpretation of electric charge transfer through surface states in dielectrics . Since the charging tendency of dielectrics almost always is influenced by the work function of the metal, charge generation in the case of dielectric‐metal contact is also considered to be caused by electron transfer.…”

“…Since the charging tendency of dielectrics almost always is influenced by the work function of the metal, charge generation in the case of dielectric‐metal contact is also considered to be caused by electron transfer. Theoretical approaches have accurately predicted the existence of shallow surface states of dielectrics . Since dielectrics possess extremely low conductivity, electric charge transfer between dielectrics and metals should be restricted to shallow surface states in the dielectric.…”

“…The electronic states of the polymer surface play a crucial role in electrification phenomena. In particular, the shallow surface states existing near the work function of the metal are of fundamental importance in discussing charge transport in polymer–metal interfaces . The use of the PESA technique has shown that the density of states (DOS) in the polymer is closely related to charging phenomena during rubbing electrification.…”