ORGANIC CONDUCTING MATERIALS BASED ON HETEROCYCLIC COMPOUNDS WITH OXYGEN, SULFUR, SELENIUM AND NITROGEN
Abstract
IN THIS THESIS WE REPORT THE SYNTHESIS OF THREE CLASSES Π-DONORS MOLECULES, TTFTYPE. THE FIRST CLASS ARE DONORS CONTAINING ONE ETHYLENEDIOXY GROUP. MANY RADICAL SALTS OF THESE DONORS CRYSTALLIZE IN A NEW STRUCTURAL PHASE, THE SO-CALLED R-PHASE. THE SECOND CLASS ARE DONORS WITH THE SAME MOLECULAR SKELETON AS BEDTTTF (OR ET) BUT WITH ONE OR TWO SULFUR ATOMS OF THE TTF CORE REPLACED BY SELENIUM ATOMS. MOST OF THESE DONORS' CATION RADICAL SALTS ARE ISOSTRUCTURAL WITHTHE RESPECTIVE SALTS OF ET, BUT THEY ARE NOT SUPERCONDUCTING. THE THIRD CLASSARE DONORS LONGER THAN THE ALREADY KNOWN. THE RADICAL SALTS OF THESE DONORS DO NOT PRODUCE GOOD QUALITY CRYSTALS APPROPRIATE FOR STUDY OF THEIR PHYSICAL PROPERTIES.
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