Tuning the Dipolar Second-Order Nonlinear Optical Properties of Cyclometalated Platinum(II) Complexes with Tridentate N^C^N Binding Ligands

Authors

  • Dr. Ester Rossi,

    1. Dipartimento di Chimica, Università degli Studi di Milano, UdR dell'INSTM di Milano and ISTM-CNR via Golgi 19, 20133 Milano (Italy), Fax: (+39) 02-50314405
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  • Dr. Alessia Colombo,

    1. Dipartimento di Chimica, Università degli Studi di Milano, UdR dell'INSTM di Milano and ISTM-CNR via Golgi 19, 20133 Milano (Italy), Fax: (+39) 02-50314405
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  • Dr. Claudia Dragonetti,

    1. Dipartimento di Chimica, Università degli Studi di Milano, UdR dell'INSTM di Milano and ISTM-CNR via Golgi 19, 20133 Milano (Italy), Fax: (+39) 02-50314405
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  • Dr. Stefania Righetto,

    1. Dipartimento di Chimica, Università degli Studi di Milano, UdR dell'INSTM di Milano and ISTM-CNR via Golgi 19, 20133 Milano (Italy), Fax: (+39) 02-50314405
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  • Prof. Dr. Dominique Roberto,

    Corresponding author
    1. Dipartimento di Chimica, Università degli Studi di Milano, UdR dell'INSTM di Milano and ISTM-CNR via Golgi 19, 20133 Milano (Italy), Fax: (+39) 02-50314405
    • Dipartimento di Chimica, Università degli Studi di Milano, UdR dell'INSTM di Milano and ISTM-CNR via Golgi 19, 20133 Milano (Italy), Fax: (+39) 02-50314405
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  • Prof. Dr. Renato Ugo,

    1. Dipartimento di Chimica, Università degli Studi di Milano, UdR dell'INSTM di Milano and ISTM-CNR via Golgi 19, 20133 Milano (Italy), Fax: (+39) 02-50314405
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  • Dr. Adriana Valore,

    1. Dipartimento di Chimica, Università degli Studi di Milano, UdR dell'INSTM di Milano and ISTM-CNR via Golgi 19, 20133 Milano (Italy), Fax: (+39) 02-50314405
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  • Prof. Dr. J. A. Gareth Williams,

    1. Department of Chemistry, University of Durham, South Road, Durham, DH1 3LE (UK)
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  • Dr. Maria Grazia Lobello,

    1. ISTM-CNR, Via Elce di Sotto 8, 06100 Perugia (Italy), Fax: (+39) 075-585-5606
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  • Dr. Filippo De Angelis,

    1. ISTM-CNR, Via Elce di Sotto 8, 06100 Perugia (Italy), Fax: (+39) 075-585-5606
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  • Dr. Simona Fantacci,

    Corresponding author
    1. ISTM-CNR, Via Elce di Sotto 8, 06100 Perugia (Italy), Fax: (+39) 075-585-5606
    • ISTM-CNR, Via Elce di Sotto 8, 06100 Perugia (Italy), Fax: (+39) 075-585-5606
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  • Prof. Dr. Isabelle Ledoux-Rak,

    1. Laboratoire de Photonique Quantique et Moléculaire, UMR CNRS 8531-Institut d'Alembert, ENS Cachan, 61 avenue du Président Wilson, 94235 Cachan (France)
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  • Dr. Anu Singh,

    1. Laboratoire de Photonique Quantique et Moléculaire, UMR CNRS 8531-Institut d'Alembert, ENS Cachan, 61 avenue du Président Wilson, 94235 Cachan (France)
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  • Prof. Dr. Joseph Zyss

    1. Laboratoire de Photonique Quantique et Moléculaire, UMR CNRS 8531-Institut d'Alembert, ENS Cachan, 61 avenue du Président Wilson, 94235 Cachan (France)
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Abstract

Appropriate functionalization of the cyclometalated ligand, L, and the choice of the ancillary ligand, X, allows the dipolar second-order nonlinear optical response of luminescent [PtLX] complexes—in which L is an N^C^N-coordinated 1,3-di(2-pyridyl)benzene ligand and X is a monodentate halide or acetylide ligand—to be controlled. The complementary use of electric-field-induced second-harmonic (EFISH) generation and harmonic light scattering (HLS) measurements demonstrates how the quadratic hyperpolarizability of this appealing family of multifunctional chromophores, characterized by a good transparency throughout much of the visible region, is dominated by an octupolar contribution.

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