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Triplet state CPL active helicene-dithiolene platinum bipyridine complexes.
Biet, Thomas; Cauchy, Thomas; Sun, Qinchao; Ding, Jie; Hauser, Andreas; Oulevey, Patric; Bürgi, Thomas; Jacquemin, Denis; Vanthuyne, Nicolas; Crassous, Jeanne; Avarvari, Narcis.
Afiliación
  • Biet T; Laboratoire Moltech-Anjou, Université d'Angers, CNRS UMR 6200, 2 bd Lavoisier, 49045 Angers, France. narcis.avarvari@univ-angers.fr.
  • Cauchy T; Laboratoire Moltech-Anjou, Université d'Angers, CNRS UMR 6200, 2 bd Lavoisier, 49045 Angers, France. narcis.avarvari@univ-angers.fr.
  • Sun Q; Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland. Andreas.Hauser@unige.ch.
  • Ding J; Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland. Andreas.Hauser@unige.ch.
  • Hauser A; Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland. Andreas.Hauser@unige.ch.
  • Oulevey P; Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland. Andreas.Hauser@unige.ch.
  • Bürgi T; Department of Physical Chemistry, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland. Andreas.Hauser@unige.ch.
  • Jacquemin D; Laboratoire CEISAM, UMR CNRS 6230, Université de Nantes, 2 Rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France and Institut Universitaire de France, 1 rue Descartes, 75005 Paris Cedex 5, France.
  • Vanthuyne N; Aix Marseille Université, CNRS, Centrale Marseille, iSm2, Marseille, France.
  • Crassous J; Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS - Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France.
  • Avarvari N; Laboratoire Moltech-Anjou, Université d'Angers, CNRS UMR 6200, 2 bd Lavoisier, 49045 Angers, France. narcis.avarvari@univ-angers.fr.
Chem Commun (Camb) ; 53(66): 9210-9213, 2017 Aug 25.
Article en En | MEDLINE | ID: mdl-28766593
ABSTRACT
Chiral metal dithiolene complexes represent a family of chiral precursors, which can give rise to molecular materials with properties resulting from the interplay of chirality with conductivity, magnetism, and photophysics. We describe herein the first examples of chiral metal diimine dithiolene complexes, by the use of a platinum(ii) centre coordinated by 2,2'-bipyridine and helicene-dithiolene ligands. The straightforward synthesis of racemic and enantiopure complexes allows the preparation of luminescent Pt(bipy) [4] and [6]helicene compounds for which the solid-state structure was determined as well. TD-DFT calculations support the assignment of the low-energy bands observed in the UV-vis absorption spectra as mixed metal-ligand-to-ligand charge transfer transitions and confirm that the emission band results from the T1 excited state. Interestingly, the enantiopure [6]helicene complexes show CPL activity at room temperature in acetonitrile solutions with an anisotropy factor of 3 × 10-4.

Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Chem Commun (Camb) Asunto de la revista: QUIMICA Año: 2017 Tipo del documento: Article

Texto completo: 1 Base de datos: MEDLINE Idioma: En Revista: Chem Commun (Camb) Asunto de la revista: QUIMICA Año: 2017 Tipo del documento: Article