PHOTOCONDUCTIVITY AND CHARGE TRANSPORTING PROPERTIES OF METAL-CONTAINING POLY(P-PHENYLENEVINYLENE)S

A novel type of poly(p-phenylenevinylene)s which contain bis(2,2':6',2 ''-terpyridine) ruthenium (II) complexes has been developed. The abso rption of the polymers at 500 nm was strongly enhanced by the metal co mplexes due to the presence of the metal-ligand charge transfer transi tion. The charge transportation is dispersive with hole carrier mobili ties and activation energy of similar to 7 x 10(-5) cm(2) V-1 s(-1) an d 0.20 eV, respectively, depending on the concentration of the metal c omplex. A log mu vs E-1/2 plot shows that hole mobilities decrease wit h increasing field, which suggests the presence of off-diagonal disord er in the hopping sites. (C) 1997 American Institute of Physics.