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Abstract

It has recently been shown that ordered monolayers of polyimide can be prepared on a solid surface using the Langmuir-Blodgett technique. In the present paper we show using core and valence level photoemission that such layers on graphite are imidised to a similar extent as thicker samples prepared by spin-coating or molecular deposition. Furthermore, X-ray absorption spectroscopy at the N Is edge indicates that the imide and phenyl systems are co-planar and probably adsorbed parallel to the graphite surface. The valence level photoemission data are compared to the results of recent molecular orbital calculations.