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 and polymeric materials can be made on specially-prepared ultra-thin films of polytetrafluoroethylene, or PTFE [1]. We have prepared PTFE films, in the range of 15 to 35 A in thickness, by a slightly modified version of the hot-dragging method of Pooley and Tabor [2], and studied the electronic structure using ultraviolet and X-ray photoelectron spectroscopy, UPS and XPS. The electronic structure results are compared with new ab initio quantum chemical electronic structure calculations.