Straightforward access to mono- and bis-cycloplatinated helicenes displaying circularly polarized phosphorescence by using crystallization resolution methods

Chengshuo Shen; Emmanuel Anger; Monika Srebro; Nicolas Vanthuyne; Kirandeep K. Deol; Truman D. Jefferson; Gilles Muller; J. A. Gareth Williams; Loïc Toupet; Christian Roussel; Jochen Autschbach; Régis Réau; Jeanne Crassous

doi:10.1039/C3SC53442A

Straightforward access to mono- and bis-cycloplatinated helicenes displaying circularly polarized phosphorescence by using crystallization resolution methods†

Chengshuo Shen,^a Emmanuel Anger,^a Monika Srebro,^b Nicolas Vanthuyne,^c Kirandeep K. Deol,^d Truman D. Jefferson, Jr.,^d Gilles Muller,^d J. A. Gareth Williams,^e Loïc Toupet,^a Christian Roussel,^c Jochen Autschbach,*^f Régis Réau^a and Jeanne Crassous*^a

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^a Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042 Rennes Cedex, France
E-mail: jeanne.crassous@univ-rennes1.fr

^b Faculty of Chemistry, Jagiellonian University, 30-060 Krakow, Poland

^c Chirosciences, UMR 7313, Stéréochimie Dynamique et Chiralité, Aix-Marseille University, 13397 Marseille Cedex 20, France

^d Department of Chemistry, San José State University, San José, CA 95192-0101, USA

^e Department of Chemistry, University of Durham, Durham, UK

^f Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
E-mail: jochena@buffalo.edu

Abstract

Enantiopure mono-cycloplatinated-[8]helicene and bis-cycloplatinated-[6]helicene derivatives were prepared through column chromatography combined with crystallization of diastereomeric complexes using a chiral ancillary sulfoxide ligand. The UV-visible spectra, circular dichroism, molar rotations, and (circularly polarized) luminescence activity of these new helical complexes have been examined in detail and analysed with the help of first-principles quantum-chemical calculations.

Chemical Science

Straightforward access to mono- and bis-cycloplatinated helicenes displaying circularly polarized phosphorescence by using crystallization resolution methods†

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Straightforward access to mono- and bis-cycloplatinated helicenes displaying circularly polarized phosphorescence by using crystallization resolution methods

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