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

Homberg, Alexandre; Brun, Elodie; Zinna, Francesco; Pascal, Simon; Górecki, Marcin; Monnier, Luc Emile; Besnard, Céline; Pescitelli, Gennaro; Di Bari, Lorenzo; Lacour, Jérôme

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Title		Combined reversible switching of ECD and quenching of CPL with chiral fluorescent macrocycles
Authors		Homberg, Alexandre Brun, Elodie Zinna, Francesco Pascal, Simon Górecki, Marcin Monnier, Luc Emile Besnard, Céline Pescitelli, Gennaro Di Bari, Lorenzo Lacour, Jérôme show all authors [1 - 10]
Published in		Chemical Science. 2018, vol. 9, no. 35, p. 7043-7052
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.
Identifiers		DOI: 10.1039/C8SC02935K
Full text		Article (Published version) (2.3 MB) - Free access Other version: http://xlink.rsc.org/?DOI=C8SC02935K
Structures		Faculté des sciences / Section de chimie et biochimie / Département de chimie organique
Research group		Groupe Lacour
Citation (ISO format)		HOMBERG, Alexandre et al. Combined reversible switching of ECD and quenching of CPL with chiral fluorescent macrocycles. In: Chemical Science, 2018, vol. 9, n° 35, p. 7043-7052. https://archive-ouverte.unige.ch/unige:107800