500-Fold Amplification of Small Molecule Circularly Polarised Luminescence through Circularly Polarised FRET

Wade J, Brandt JR, Reger D, Zinna F, Amsharov K, Jux N, Andrews DL, Fuchter MJ (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Angewandte Chemie International Edition Wiley

DOI: 10.1002/anie.202011745

Abstract

Strongly dissymmetric circularly polarised (CP) luminescence from small organic molecules could transform a range of technologies, such as display devices. However, highly dissymmetric emission is usually not possible with small organic molecules, which typically give dissymmetric factors of photoluminescence (gPL) less than 10−2. Here we describe an almost 103-fold chiroptical amplification of a π-extended superhelicene when embedded in an achiral conjugated polymer matrix. This combination increases the |gPL| of the superhelicene from approximately 3×10−4 in solution to 0.15 in a blend film in the solid-state. We propose that the amplification arises not simply through a chiral environment effect, but instead due to electrodynamic coupling between the electric and magnetic transition dipoles of the polymer donor and superhelicene acceptor, and subsequent CP Förster resonance energy transfer. We show that this amplification effect holds across several achiral polymer hosts and thus represents a simple and versatile approach to enhance the g-factors of small organic molecules.

Authors with CRIS profile

David Reger Interdisziplinäres Zentrum für Molekulare Materialien Konstantin Amsharov
Norbert Jux Interdisziplinäres Zentrum für Molekulare Materialien

Involved external institutions

Imperial College London / The Imperial College of Science, Technology and Medicine GB United Kingdom (GB) University of East Anglia GB United Kingdom (GB) University of Pisa / Università di Pisa (UniPi) IT Italy (IT) Martin-Luther-Universität Halle-Wittenberg (MLU) DE Germany (DE)

How to cite

APA:

Wade, J., Brandt, J.R., Reger, D., Zinna, F., Amsharov, K., Jux, N.,... Fuchter, M.J. (2020). 500-Fold Amplification of Small Molecule Circularly Polarised Luminescence through Circularly Polarised FRET. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202011745

MLA:

Wade, Jessica, et al. "500-Fold Amplification of Small Molecule Circularly Polarised Luminescence through Circularly Polarised FRET." Angewandte Chemie International Edition (2020).

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