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English[Ir(ppy)2(5-R-1,10-phen)][PF6] (ppy = cyclometallated 2-phenylpyridine, phen = phenanthroline, R = H, Me, NMe2, NO 2) and [Ir(ppy)2(4-R′,7-R′-1,10-phen)][PF 6] (R′ = Me, Ph) complexes are characterized by one of the highest second order NLO response (measured by the EFISH technique) reported for a metal complex, mainly due (as suggested by a theoretical SOS-TDDFT investigation) to MLCT processes from the ppy-Ir based moiety acting as donor push system to π* orbitals of phen, acting as an acceptor pull system; the good transparency to the second harmonic emission renders these NLO-phores appealing as building blocks for molecular materials with second harmonic generation. © The Royal Society of Chemistry.
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| Titolo: | Cyclometallated iridium(III) complexes with substituted 1,10-phenanthrolines: A new class of highly active organometallic second order NLO-phores with excellent transparency with respect to second harmonic emission | |
| Autori: | DE ANGELIS, Filippo (Corresponding) | |
| Data di pubblicazione: | 2007 | |
| Rivista: | ||
| Abstract: | [Ir(ppy)2(5-R-1,10-phen)][PF6] (ppy = cyclometallated 2-phenylpyridine, phen = phenanthroline, R ...= H, Me, NMe2, NO 2) and [Ir(ppy)2(4-R′,7-R′-1,10-phen)][PF 6] (R′ = Me, Ph) complexes are characterized by one of the highest second order NLO response (measured by the EFISH technique) reported for a metal complex, mainly due (as suggested by a theoretical SOS-TDDFT investigation) to MLCT processes from the ppy-Ir based moiety acting as donor push system to π* orbitals of phen, acting as an acceptor pull system; the good transparency to the second harmonic emission renders these NLO-phores appealing as building blocks for molecular materials with second harmonic generation. © The Royal Society of Chemistry. | |
| Handle: | http://hdl.handle.net/11391/1459777 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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