ELECTRONIC-STRUCTURE OF PTFE SUBSTRATES TO BE USED FOR THE PREPARATION OF ORDERED ORGANIC OVERLAYERS

Recently, it has been shown that ordered overlayers of many organic an d polymeric materials can be made on specially-prepared ultra-thin fil ms of polytetrafluoroethylene, or PTFE [1]. We have prepared PTFE film s, in the range of 15 to 35 angstrom in thickness, by a slightly modif ied version of the hot-dragging method of Pooley and Tabor [2], and st udied the electronic structure using ultraviolet and X-ray photoelectr on spectroscopy, UPS and XPS. The electronic structure results are com pared with new ab initio quantum chemical electronic structure calcula tions.