MODIFIED PERYLENE MOLECULAR CONDUCTORS

We report recent results on modified perylene molecular conductors, de rived from 1,2,7,8-tetrahydrodicyclopenta-(cdlm)perylene (CPP) and fro m perylothiophene, (PeT) with the counter-ions l(3) and Ni(mnt)(2) (mn t= maleonitriledithiolate), with general formula CPP2(l(3))(1-delta) a nd PeT(3)[Ni(mnt)(2)](2), respectively. Single crystals of CPP2(l(3))( 1-delta), appear in two different morphologies, and the crystal struct ures consist of regular stacks of CPP molecules and one-dimensional di sordered chains of l(3) located in channels between four CPP stacks. T he different crystal morphologies exhibit different physical propertie s which are related to different degrees of iodine content and orderin g. An important feature of these materials, when compared to the well known perylene-iodine complexes is the fact that the bulky -CH2-CH2- g roups attached to the perylene molecular architecture interact with th e triiode anions locking them in a stable composition. The transport, ESR and magnetic properties of these modified perylene molecular condu ctors are reported in detail.