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.
Cyclometalated Ir(III) complexes with curcuminoid ligands as active second-order nlo chromophores and building blocks for shg polymeric films / M. Fontani, A. Colombo, C. Dragonetti, S. Righetto, D. Roberto, D. Marinotto. - In: INORGANICS. - ISSN 2304-6740. - 8:5(2020 May), pp. 36.1-36.12.
|Titolo:||Cyclometalated Ir(III) complexes with curcuminoid ligands as active second-order nlo chromophores and building blocks for shg polymeric films|
ROBERTO, DOMINIQUE MARIE (Corresponding)
|Parole Chiave:||Cyclometalated iridium(III) complexes; EFISH; Second-order nonlinear optics; Secondharmonic generation|
|Settore Scientifico Disciplinare:||Settore CHIM/03 - Chimica Generale e Inorganica|
|Data di pubblicazione:||mag-2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3390/INORGANICS8050036|
|Appare nelle tipologie:||01 - Articolo su periodico|