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

Article Article scientifique Article Combined reversible switching of ECD and quenching of CPL with chiral fluorescent macrocycles eng 2018 author Homberg Alexandre 671107 author Brun Elodie 848671 author Zinna Francesco 868768 author Pascal Simon 829235 author Górecki Marcin author Monnier Luc Emile 835554 author Besnard Céline 682138 author Pescitelli Gennaro author Di Bari Lorenzo author Lacour Jérôme 0000-0001-6247-8059 99165 7043-7052 10.1039/C8SC02935K 2041-6520 http://xlink.rsc.org/?DOI=C8SC02935K 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. Dewey 540 36 Département de chimie organique 141 false 760 Groupe Lacour Chemical Science 9 35 518dc6c8-e74c-438c-8921-93e64326a21d Article (Published version) Public c8sc02935k.pdf 2424346 application/pdf CC BY openAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie organique

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Combined reversible switching of ECD and quenching of CPL with chiral fluorescent macrocycles	Chemical Science			2018	504	361

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Monnier, Luc Emile