ChemInform Abstract: An Inelastic Electron Tunneling Spectroscopic Investigation of the Interaction of Molybdenum Hexacarbonyl with an Aluminum Oxide Surface.

ChemInform ◽  
1987 ◽  
Vol 18 (21) ◽  
Author(s):  
G. J. GAJDA ◽  
R. H. GRUBBS ◽  
W. H. WEINBERG
Keyword(s):  
Aluminum Oxide ◽  
Spectroscopic Investigation ◽  
Electron Tunneling ◽  
Oxide Surface ◽  
Inelastic Electron ◽  
Molybdenum Hexacarbonyl ◽  
Inelastic Electron Tunneling ◽  
Aluminum Oxide Surface

Characterization of the Adsorption of Poly(Acrylamide), Poly(4-methoxystyrene), and Poly(Acrylic Acid) on Aluminum Oxide by Inelastic Electron Tunneling Spectroscopy

1987 ◽  
Vol 41 (7) ◽  
pp. 1185-1189 ◽  
Author(s):  
Ronald F. Colletti ◽  
Harvey S. Gold ◽  
Cecil Dybowski
Keyword(s):  
Acrylic Acid ◽  
Aluminum Oxide ◽  
Electron Tunneling ◽  
Oxide Surface ◽  
Inelastic Electron ◽  
Inelastic Electron Tunneling Spectroscopy ◽  
Inelastic Electron Tunneling ◽  
Electron Tunneling Spectroscopy ◽  
Poly Acrylamide ◽  
Poly Acrylic Acid

The adsorptions of polystyrene, poly(methoxystyrene), poly(acrylamide), and poly(acrylic acid) on aluminum oxide are investigated with inelastic electron tunneling spectroscopy. Comparison with infrared data for thin polymer films of the polymer samples gives insight into the adsorbed polymer configuration. Data indicate that poly(styrene) is weakly physisorbed to aluminum oxide, while poly(methoxystyrene), poly(acrylamide), and poly(acrylic acid) react to form strong bonds with the oxide surface. On the basis of this data, adsorption mechanisms are suggested for each of the polymers. Poly(acrylamide) adsorbs via a protonation of the amine group by the surface hydroxyl groups. Poly(4-methoxystyrene) forms a phenolate ion and can react further with the aluminum surface centers. Poly(acrylic acid) adsorbs to the oxide surface in a manner analogous to that of small organic acids such as the carboxylate ion.

Sign in / Sign up

Export Citation Format

Share Document