The complete characterization of novel electropolymerizable organometallic complexes is presented. These are newly synthesized cyclometalated complexes of general formula (PPy)M(O^N)n (H(PPy) = 2-phenylpyridine, M = Pd(II) or Pt(II), H(O^N)n = Schiff base). Polymeric thin films have been obtained from these complexes by electropolymerization of the triphenylamino group grafted onto the H(O^N)n ancillary ligand. The redox behavior and the photoconductivity of both of the monomers (PPy)M(O^N)n and the electropolymerized species have been investigated. The polymeric films of (PPy)M(O^N)n have shown a very significant enhancement of photoconductivity when compared to their monomeric amorphous counterparts. The high stability of the obtained films strongly suggests that electropolymerization of cyclometalated complexes represents a viable deposition technique of quality thin films with improved photoconduction properties, hence opening the door to a new class of materials with suitable properties for optoelectronic applications.

Electropolymerized Highly Photoconductive Thin Films of Cyclopalladated and Cycloplatinated Complexes

Ionescu, A.;Mastropietro, T. F.;Aiello, I.;Golemme, A.;Ghedini, M.;Godbert, N.
2015

Abstract

The complete characterization of novel electropolymerizable organometallic complexes is presented. These are newly synthesized cyclometalated complexes of general formula (PPy)M(O^N)n (H(PPy) = 2-phenylpyridine, M = Pd(II) or Pt(II), H(O^N)n = Schiff base). Polymeric thin films have been obtained from these complexes by electropolymerization of the triphenylamino group grafted onto the H(O^N)n ancillary ligand. The redox behavior and the photoconductivity of both of the monomers (PPy)M(O^N)n and the electropolymerized species have been investigated. The polymeric films of (PPy)M(O^N)n have shown a very significant enhancement of photoconductivity when compared to their monomeric amorphous counterparts. The high stability of the obtained films strongly suggests that electropolymerization of cyclometalated complexes represents a viable deposition technique of quality thin films with improved photoconduction properties, hence opening the door to a new class of materials with suitable properties for optoelectronic applications.
Electropolymerization; Palladium(II) complexes; Photoconductivity
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/143760
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