POLYARYLENES ON THE BASIS OF ALKYLPYRROLE AND ALKYLCARBAZOLE DERIVATIVES AND THEIR OLIGOMERIC MODEL SYSTEMS

The redox and spectroscopic properties of soluble poly(9-decylcarbazol e) derivatives and poly(1-decylpyroole) were studied. The polymers wer e synthesized via the Yamamoto polycondensation method. Analyzing the electrochemical and optical properties of 3,6-linked poly(alkylcarbazo le)s it is evident that the conjugation segment is the benzidine syste m and the overall properties of these polymers can be compared with me ta linked poly(phenylene)s. In opposite, 2,7-linked poly(alkylcarbazol e)s reveal an even longer conjugation segment comparable with para lin ked poly(phenylene)s. First observations in the case of poly(1-decylpy rrole) suggest a higher steric hinderance compared to poly(1-methylpyr role). Molecular modeling studies confirm this. (C) 1997 by John Wiley & Sons, Ltd.