Abstract
The initial stages of polymerization of tetracyanoethylene (TCNE) on a field cathode metal tip were investigated by negative field ion microscopy (NFIM). Field electron emission into the TCNE gas, leading to the formation of a deposit on the tip surface, was found to be a prerequisite for the growth of the polymer layer by anionic polymerization. In the first step after electron emission anionic polymerization of TCNE to long linear polymer chains occurs at low and even zero field strengths. The transition to the polymer structure which leads to the appearance of bright rings in the ion images is caused by a longer exposure of the polymer layer to NFI conditions, i.e., by anionic polymerization of TCNE molecules absorbed in the layer which changes the elastic properties of the layer.
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