| 摘要 |
A method for the ionization of polymers which comprises forming a thick layer of the polymer on a probe tip and then ionizing the polymer in a vacuum with laser irradiation. In a preferred embodiment, a moiety that readily photoionizes in an IR field is incorporated into the thick layer of polymer and the irradiation of the thus modified polymer is done with a CO2 IR laser. A method is also disclosed for the fabrication of polymer coatings which comprises accelerating the charged polymer ions generated by the ionization of a thick layer of polymer in a vacuum toward the substrate which has an appropriate charge gradient.
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