Synthesis, characterization and physical properties of tricarbonylmanganese and pentamethylcyclopentadienylcobalt complexes of poly(9-hexylfluorene)

Abstract

Transition-metal complexes of a conducting polymer, poly(9-hexylfluorene)(abbreviated as PHF), have been prepared and their electrochemical and optical properties investigated. A manganese complex, [Mn(CO)₃PHF], is oxidized quasi-reversibly in Bu₄NBF₄–CF₃CO₂H at a more negative potential than free PHF, whereas a cobalt complex, [Co(C₅Me₅)PHF]Cl_x, is oxidized irreversibly without forming a polaronic state. The photoluminescence intensity of PHF is decreased by coordination to the metals.