Induced crystallographic modification of aromatic compounds

摘要

Materials that change crystal structure upon radiation with a beam of electrons have been found. These materials, such as perylene dianhydride, naphthalene dianhydride, and perylene tetracarboxylic diimide based compounds undergo a transformation from one crystalline structure to another upon exposure to energetic electrons. This transformation causes a change in optical, electrical, and solubility properties. In this manner, these materials are useful as resists for delineating patterns, as optical storage media, and/or in processes for producing patterns of conductive materials such as employed in semiconductor technology.