Light‐ and Heat‐Induced Reversal of Circularly Polarized Luminescence in a Single Molecule
Abstract
Abstract Switching the handedness of circularly polarized luminescence (CPL) at the molecular level remains a challenge in the development of responsive chiral materials. We report a light‐driven molecular motor covalently linked to two perylenediimide (PDI) chromophores, enabling reversible and directional modulation of CPL. The different motor states, which are accessible in a unidirectional fashion via light‐irradiation and thermal helix inversion steps, respectively, display significantly distinct chiroptical properties. In addition, our system allows switching of the chiral induction process and hence, the observation of a CPL signal. The present work discloses the first example of reversible CPL sign inversion triggered by light irradiation at the single molecular level, offering a new starting point for designing emitters with light‐responsive chirality modulation.
Article Details
Authors (12)
Louis Hardoin
MOLTECH‐Anjou Univ Angers Angers F‐49000 France
Eric Sidler
Stratingh Institute for Chemistry University of Groningen Nijenborgh 3 Groningen 9747 AG Netherlands
John Y. de Boer
Gaétan Delhaye
MOLTECH‐Anjou Univ Angers Angers F‐49000 France
Matthieu Loumaigne
MOLTECH‐Anjou Univ Angers Angers F‐49000 France
Magali Allain
Univ Angers, CNRS, MOLTECH‐ANJOU Angers France
Sébastien Goeb
Univ Angers, CNRS, MOLTECH‐ANJOU Angers France
Alexander Ryabchun
Stratingh Institute for Chemistry
Marc Sallé
Univ Angers, CNRS, MOLTECH‐ANJOU Angers France
Denis Jacquemin
Nantes Université, CNRS, CEISAM Nantes France
Ben L. Feringa
Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering
David Canevet
Univ Angers, CNRS, MOLTECH‐ANJOU Angers France