Soluble and Electroactive Nickel Bis(dithiolene) Polymers Prepared Via Metal Complexation Polymerization.

摘要

A new series of polymers containing nickel bis(dithiolene) linkages along the polymer main chain have been prepared. A variety of flexible linkages have been utilized to separate the nickel bis(dithiolene) complexes and include -O-, -S-, -CH2-, -(CH2)10-,-(CH2)22- and -(OCH2CH2) 3 O- The polymers with short flexible linkages in this series are highly soluble in both aqueous and organic solvents in the reduced (dianionic) form and are slightly soluble in the oxidized or neutral form. Increasing the length of the organic flexible linkage in the polymer main chain increases the solubility of the polymers in the oxidized form. Three different oxidation states of the nickel complex are observed electrochemically. The position of the near-IR peak of the metal complex is significantly affected by solvent polarity with a maximum shift of 94 nm observed when changing from a non-polar (toluene) to a highly polar (DMSO) medium. Nickel bis(dithiolene) polymers, Soluble, Oxidation states. (jes)