Cyclometalated Ir(III) Complexes with Curcuminoid Ligands as Active Second-Order NLO Chromophores and Building Blocks for SHG Polymeric Films
The second-order nonlinear optical (NLO) properties of iridium(III) complexes having two cyclometalated 2-phenylpyridines and curcumin or tetrahydrocurcumin as ancillary ligand have been investigated both in solution and as guest in a polymeric organic matrix. In solution, these complexes are charac...
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| Published in: | Inorganics Vol. 8; no. 5; p. 36 |
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| Abstract | The second-order nonlinear optical (NLO) properties of iridium(III) complexes having two cyclometalated 2-phenylpyridines and curcumin or tetrahydrocurcumin as ancillary ligand have been investigated both in solution and as guest in a polymeric organic matrix. In solution, these complexes are characterized by a significant second-order NLO response, as determined by the Electric Field Induced Second Harmonic (EFISH) technique, like the related complex with acetylacetonate. Whereas the low second-harmonic generation response of a composite film of [Ir(2-phenylpyridine)2(acetylacetonate)] in polymethyl methacrylate was not stable and fell down to zero upon turning off the electric field. A good and stable response was obtained with a film based on the iridium(III) complex bearing two cyclometalated 2-phenylpyridines and curcumin. |
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| AbstractList | The second-order nonlinear optical (NLO) properties of iridium(III) complexes having two cyclometalated 2-phenylpyridines and curcumin or tetrahydrocurcumin as ancillary ligand have been investigated both in solution and as guest in a polymeric organic matrix. In solution, these complexes are characterized by a significant second-order NLO response, as determined by the Electric Field Induced Second Harmonic (EFISH) technique, like the related complex with acetylacetonate. Whereas the low second-harmonic generation response of a composite film of [Ir(2-phenylpyridine)2(acetylacetonate)] in polymethyl methacrylate was not stable and fell down to zero upon turning off the electric field. A good and stable response was obtained with a film based on the iridium(III) complex bearing two cyclometalated 2-phenylpyridines and curcumin. |
| Author | Colombo, Alessia Marinotto, Daniele Righetto, Stefania Dragonetti, Claudia Roberto, Dominique Fontani, Mattia |
| Author_xml | – sequence: 1 givenname: Mattia surname: Fontani fullname: Fontani, Mattia – sequence: 2 givenname: Alessia orcidid: 0000-0001-8004-3200 surname: Colombo fullname: Colombo, Alessia – sequence: 3 givenname: Claudia surname: Dragonetti fullname: Dragonetti, Claudia – sequence: 4 givenname: Stefania surname: Righetto fullname: Righetto, Stefania – sequence: 5 givenname: Dominique orcidid: 0000-0001-9659-4760 surname: Roberto fullname: Roberto, Dominique – sequence: 6 givenname: Daniele surname: Marinotto fullname: Marinotto, Daniele |
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