Adsorption of poly(gamma-substituted alpha, L-glutamate) on aluminum surface: Atr and Mo approaches

Abstract

To examine possible adsorptive mechanism of polyglutamates on the aluminum surface, ATR-FTIR (attenuated total reflectance-Fourier transform infrared) spectrometer and MO (molecular orbital) calculation were used. Expected C=O stretching shift due to the chemical binding was not observed even in less-substituted glutamate polymers. ATR studies suggest: (1) the interaction between Al surface and polyglutamates is driven by physical adsorption, and (2) the interaction between the hairy rod polymer and solid substrate is governed by the intercrossing of side chain pendent groups.