The results of the experimental investigations concerning the synthesis of a new indolonic type polymer with magnetic properties are presented. By comparison with the known analogous structures in which the linking of the indolonic rests takes place at the 5,5' positions, the new polymer was obtained as a unique 6,6'stereoisomer by Bayer- Drewsen synthesis. The used preparative way implies the treatment of o-nitrobenzaldehyde with formaldehyde in

The growing interest in the production of electronic devices are able to detect very small amounts of cellular second-messengers as NO or for monitoring gases as NO2, O2, CO2, Cl2 or other toxic gases. The metal-complex tetraizoindoles (metal phthalocyanines, MePcs) were previously shown as potential sensor materials for nitrogen oxide-sensing devices. The synthesis of nickel phthalocyanines (NiPcs), copper polyphthalocyanines (CuPcs) and aliphatic