| abstract |
Method of obtaining PDI derivatives. # The present invention relates to a process for preparing perilenediimide derivatives of formula I where the meaning for R {sub, 1}, R {sub, 2} and R {sub, 3} It is the one indicated in the description. These compounds are useful for the preparation of dyes, pigments, paints, fluorescent agents, optical devices, electronic devices, electro-optical devices, light emitting diodes and organic or hybrid photovoltaic cells. |