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Unusual magnetic field responsive circularly polarized luminescence probes with highly emissive chiral Eu(III) complexes.

Zhang, Junhui and Dai, Lixiong and Webster, Alexandra M. and Chan, Wesley Ting Kwok and Cobb, Steven L. and Law, Ga-Lai (2020) 'Unusual magnetic field responsive circularly polarized luminescence probes with highly emissive chiral Eu(III) complexes.', Angewandte chemie international edition., 60 (2). pp. 1004-1010.

Abstract

Chirality is ubiquitous within biological systems where many of the roles and functions are still undetermined. Given this, there is a clear need to design and develop sensitive chiral optical probes that can function within a biological setting. Here we report the design and synthesis of magnetically responsive Circularly Polarized Luminescence (CPL) complexes displaying exceptional photophysical properties (quantum yield up to 31% and |g lum | up to 0.240) by introducing chiral substituents onto the macrocyclic scaffolds. Magnetic CPL responses are observed in these chiral Eu(III) complexes, promoting an exciting development to the field of magneto‐optics. The |g lum | of the 5 D 0 à 7 F 1 transition increases by 20% from 0.222 (0 T) to 0.266 (1.4 T) displaying a linear relationship between the Δg lum and the magnetic field strength. These Eu(III) complexes with magnetic CPL responses, provides potential development to be used in CPL imaging applications due to improved sensitivity and resolution.

Item Type:Article
Full text:Publisher-imposed embargo
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1002/anie.202012133
Publisher statement:© 2020 The Authors. Published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Date accepted:21 September 2020
Date deposited:15 October 2020
Date of first online publication:03 November 2020
Date first made open access:24 February 2021

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