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Combined reversible switching of ECD and quenching of CPL with chiral fluorescent macrocycles

Abstract

Straightforward synthesis and resolution of a series of chiral fluorescent macrocycles are presented, together with their electronic circular dichroism (ECD), strong excimer fluorescence (EF, λ 300 to 650 nm) and allied highly circularly polarized luminescence (CPL, glum up to 1.7×10-2). The ECD, EF and CPL responses are strongly affected by the presence of metal ions (Na+, Ba2+) thanks to deep conformational changes. While ECD signals can be almost completely reversibly inverted upon the complexation/decomplexation of metal ions in a typical binary response, CPL signals are reversibly quenched concomitantly. The designed macrocycles display thus a remarkable combination of both +/− ECD and on/off CPL reversible switching.

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Publication details

The article was accepted on 30 Jul 2018 and first published on 01 Aug 2018


Article type: Edge Article
DOI: 10.1039/C8SC02935K
Citation: Chem. Sci., 2018, Accepted Manuscript
  • Open access: Creative Commons BY license
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    Combined reversible switching of ECD and quenching of CPL with chiral fluorescent macrocycles

    A. Homberg, E. Brun, F. Zinna, S. Pascal, M. Górecki , L. Monnier, C. Besnard, G. Pescitelli, L. Di Bari and J. Lacour, Chem. Sci., 2018, Accepted Manuscript , DOI: 10.1039/C8SC02935K

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