Formation of Gels and Liquid Crystals Induced by Pt⋅⋅⋅Pt and π–π* Interactions in Luminescent σ-Alkynyl Platinum(II) Terpyridine Complexes

Authors

  • Franck Camerel Dr.,

    1. Laboratoire de Chimie Moléculaire, ECPM, UMR 7509, CNRS – Université Louis Pasteur, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France, Fax: (+33) 3-9024-2689
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  • Raymond Ziessel Dr.,

    1. Laboratoire de Chimie Moléculaire, ECPM, UMR 7509, CNRS – Université Louis Pasteur, 25 rue Becquerel, 67087 Strasbourg Cedex 02, France, Fax: (+33) 3-9024-2689
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  • Bertrand Donnio Dr.,

    1. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Groupe des Matériaux Organiques (GMO), UMR 7504, CNRS – Université Louis Pasteur, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
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  • Cyril Bourgogne Dr.,

    1. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Groupe des Matériaux Organiques (GMO), UMR 7504, CNRS – Université Louis Pasteur, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
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  • Daniel Guillon Dr.,

    1. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Groupe des Matériaux Organiques (GMO), UMR 7504, CNRS – Université Louis Pasteur, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
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  • Marc Schmutz Dr.,

    1. Institut Charles Sadron, CNRS – UPR 22, 6 rue Boussingault, 67083 Strasbourg, France
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  • Cristian Iacovita,

    1. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Groupe des Matériaux Organiques (GMO), UMR 7504, CNRS – Université Louis Pasteur, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
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  • Jean-Pierre Bucher Prof.

    1. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Groupe des Matériaux Organiques (GMO), UMR 7504, CNRS – Université Louis Pasteur, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
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  • This work was supported by the Centre National de la Recherche Scientifique and the Ministère de la Recherche et des Nouvelles Technologies. The authors thank Professor Jack Harrowfield (ISIS Strasbourg) for carefully reading and commenting on this manuscript prior to submission. We also thank Thomas Dombray for his help with the synthesis of the gallate derivatives with phytol-like substituents and Stéphane Diring for his contribution in the graphical design. We also warmly thank Johnson Matthey plc. for the loan of precious metals.

Abstract

original image

Well organized! A new class of phosphorescent materials was obtained by the coupling of trialkylgallate-functionalized alkynes to a planar PtII terpyridine unit. Pt⋅⋅⋅Pt interactions in these complexes lead to the formation of highly colored organogels and columnar liquid crystals (see picture). Amide groups linking the gallate and alkyne units provide additional stabilization of the structures through hydrogen bonding.

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