[Ir(ppy)2(5-R-1,10-phen)][PF6] (ppy = cyclometallated 2-phenylpyridine, phen = phenanthroline, R = H, Me, NMe2, NO2) and [Ir(ppy)2(4-R’,7-R’-1,10-phen)][PF6] (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 p* 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.

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. / C. Dragonetti, S. Righetto, D.M. Roberto, R. Ugo, A. Valore, S. Fantacci, A. Sgamellotti, F. De Angelis. - In: CHEMICAL COMMUNICATIONS. - ISSN 1359-7345. - 2007:40(2007), pp. 4116-4118.

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.

C. Dragonetti;S. Righetto;D.M. Roberto;R. Ugo;A. Valore;
2007

Abstract

[Ir(ppy)2(5-R-1,10-phen)][PF6] (ppy = cyclometallated 2-phenylpyridine, phen = phenanthroline, R = H, Me, NMe2, NO2) and [Ir(ppy)2(4-R’,7-R’-1,10-phen)][PF6] (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 p* 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.
Settore CHIM/03 - Chimica Generale e Inorganica
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/40102
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