2,7-dicyano-4,5-dinitro-9-X-fluorenes: synthesis, cyclic voltammetry, charge transfer complexation with N-propylcarbazole in solution, and x-ray crystal structures of two tetrathiafulvalene complexes

A study was conducted to characterize the preparation and physical features of a series of unique fluorene pi-electron acceptors. Results indicated that the organic compounds support three separate reversible single-electron reduction processes. Findings also suggested that the derivatives support critical acceptor molecular function associated with the development of organic semiconductors, photoconductors and conductors.