The dipolar and octupolar contributions of the second order nonlinear optical properties of [(4′-(C6H4-p-D)-2,2′:6′,2′′-terpyridine)-Ru-(4′-(C6H4-p-A)-2,2′:6′,2′′-terpyridine)]Y2 heteroleptic complexes (D and A are donor and acceptor groups, respectively), and related free terpyridines and homoleptic complexes, have been obtained by means of a comprehensive combination of Electric Field Induced Second Harmonic generation, Third Harmonic Generation, and Harmonic Light Scattering measurements. These results evidence how a metal can act as a bridge between two π-delocalized terpyridine moieties bearing a D and an A group, respectively, leading to a large quadratic hyperpolarizability hugely dominated by the octupolar contribution
New [(D-terpyridine)-Ru-(D or A-terpyridine)][4-EtPhCO2](2) complexes (D = electron donor group; A = electron acceptor group) as active second-order non linear optical chromophores / A. Colombo, D. Locatelli, D. Roberto, F. Tessore, R. Ugo, M. Cavazzini, S. Quici, F. De Angelis, S. Fantacci, I. Ledoux-Rak, N. Tancrez, J. Zyss. - In: DALTON TRANSACTIONS. - ISSN 1477-9226. - 41:22(2012), pp. 6707-6714. [10.1039/c2dt30183k]
New [(D-terpyridine)-Ru-(D or A-terpyridine)][4-EtPhCO2](2) complexes (D = electron donor group; A = electron acceptor group) as active second-order non linear optical chromophores
A. Colombo;D. Locatelli;D. Roberto;F. Tessore;R. Ugo;
2012
Abstract
The dipolar and octupolar contributions of the second order nonlinear optical properties of [(4′-(C6H4-p-D)-2,2′:6′,2′′-terpyridine)-Ru-(4′-(C6H4-p-A)-2,2′:6′,2′′-terpyridine)]Y2 heteroleptic complexes (D and A are donor and acceptor groups, respectively), and related free terpyridines and homoleptic complexes, have been obtained by means of a comprehensive combination of Electric Field Induced Second Harmonic generation, Third Harmonic Generation, and Harmonic Light Scattering measurements. These results evidence how a metal can act as a bridge between two π-delocalized terpyridine moieties bearing a D and an A group, respectively, leading to a large quadratic hyperpolarizability hugely dominated by the octupolar contributionPubblicazioni consigliate
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