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Article Dans Une Revue Journal of the American Chemical Society Année : 2014

Second-​Order NLO Switches from Molecules to Polymer Films Based on Photochromic Cyclometalated Platinum(II) Complexes

Résumé

Novel photochromic dithienylethene-​based platinum(II) complexes (C-​N-​N)​Pt(C≡C-​DTE-​C6H4-​D) ((C-​N-​N) = 4,​4'-​di(n-​hexyl)​-​6-​phenyl-​2,​2'-​bipyridine; D = H, NMe2) were prepd. and characterized. Their excellent photochromic properties allow the photoinduced switching of their second-​order nonlinear optical properties in soln., as measured by the EFISH technique, due to formation of an extended π-​conjugated ligand upon suitable electromagnetic radiation. Insights into the electronic structures of the complexes and the nature of their excited states have been obtained by DFT and TD-​DFT calcns. These novel Pt(II) complexes were nanoorganized in polymer films which were poled, affording new materials characterized by a good second-​order NLO response that can be easily switched, with an excellent NLO contrast. To the best of our knowledge, our compds. allowed designing the very first examples of switchable NLO polymer films based on metal complexes.
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Dates et versions

hal-00992877 , version 1 (19-05-2014)

Identifiants

Citer

Julien Boixel, Véronique Guerchais, Hubert Le Bozec, Denis Jacquemin, Anissa Amar, et al.. Second-​Order NLO Switches from Molecules to Polymer Films Based on Photochromic Cyclometalated Platinum(II) Complexes. Journal of the American Chemical Society, 2014, 136 (14), pp.5367-5375. ⟨10.1021/ja4131615⟩. ⟨hal-00992877⟩
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