Homogeneous thin films of controlled thickness obtained from cyclometalated complexes of general formula [(C boolean AND N)M(O boolean AND N)], where M = Pd(II) or Pt(II), H(C boolean AND N) = 2-phenylpyridine and, respectively, 2-thienylpyridine and H(O boolean AND N) = a triphenylamine functionalized Schiff base, have been deposited by oxidative electropolymerization. The films have been electrochemically and morphologically characterized. The metallopolymeric thin films present stable reversible redox behavior and typical cauliflower-like textures in agreement with a nucleation growth electropolymerization mechanism However, the film growth is greatly influenced by the nature complexes to promote the 3D growth. Furthermore, a complete electrodeposited films showing near-IR absorption in the oxidized state, of the metal center, with a higher tendency of the Pt spectroelectrochernical study has been performed on electrodeposited films showing near-IR absorption in the oxidized state, high contrast ratios (up to 65%) and low response times.

Near-IR Electrochromism in Electrodeposited Thin Films of Cyclometalated Complexes

A. Ionescu;I. Aiello;M. La Deda;A. Crispini;M. Ghedini;M. P. De Santo;N. Godbert
2016-01-01

Abstract

Homogeneous thin films of controlled thickness obtained from cyclometalated complexes of general formula [(C boolean AND N)M(O boolean AND N)], where M = Pd(II) or Pt(II), H(C boolean AND N) = 2-phenylpyridine and, respectively, 2-thienylpyridine and H(O boolean AND N) = a triphenylamine functionalized Schiff base, have been deposited by oxidative electropolymerization. The films have been electrochemically and morphologically characterized. The metallopolymeric thin films present stable reversible redox behavior and typical cauliflower-like textures in agreement with a nucleation growth electropolymerization mechanism However, the film growth is greatly influenced by the nature complexes to promote the 3D growth. Furthermore, a complete electrodeposited films showing near-IR absorption in the oxidized state, of the metal center, with a higher tendency of the Pt spectroelectrochernical study has been performed on electrodeposited films showing near-IR absorption in the oxidized state, high contrast ratios (up to 65%) and low response times.
2016
Cyclometalated metallopolymers; Pd(II) complexes; Electropolymerization and Eectrochromism
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/131958
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