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151
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Homberg A, Brun E, Zinna F, Pascal S, Górecki M, Monnier L, Besnard C, Pescitelli G, Di Bari L, Lacour J. Combined reversible switching of ECD and quenching of CPL with chiral fluorescent macrocycles. Chem Sci 2018; 9:7043-7052. [PMID: 30310624 PMCID: PMC6137439 DOI: 10.1039/c8sc02935k] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 07/30/2018] [Indexed: 11/21/2022] Open
Abstract
![]() A series of chiral fluorescent macrocycles display a remarkable combination of both +/– ECD and strong on/off CPL reversible switching upon cation binding and displacement.
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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Affiliation(s)
- Alexandre Homberg
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , 1211 Geneva 4 , Switzerland .
| | - Elodie Brun
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , 1211 Geneva 4 , Switzerland .
| | - Francesco Zinna
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , 1211 Geneva 4 , Switzerland .
| | - Simon Pascal
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , 1211 Geneva 4 , Switzerland .
| | - Marcin Górecki
- Dipartimento di Chimica e Chimica Industriale , Università di Pisa , Via Moruzzi 13 , 56124 Pisa , Italy
| | - Luc Monnier
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , 1211 Geneva 4 , Switzerland .
| | - Céline Besnard
- Laboratoire de Cristallographie , University of Geneva , Quai Ernest Ansermet 24 , 1211 Geneva 4 , Switzerland
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale , Università di Pisa , Via Moruzzi 13 , 56124 Pisa , Italy
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale , Università di Pisa , Via Moruzzi 13 , 56124 Pisa , Italy
| | - Jérôme Lacour
- Department of Organic Chemistry , University of Geneva , Quai Ernest Ansermet 30 , 1211 Geneva 4 , Switzerland .
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152
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Reiné P, Ortuño AM, Resa S, Álvarez de Cienfuegos L, Blanco V, Ruedas-Rama MJ, Mazzeo G, Abbate S, Lucotti A, Tommasini M, Guisán-Ceinos S, Ribagorda M, Campaña AG, Mota A, Longhi G, Miguel D, Cuerva JM. OFF/ON switching of circularly polarized luminescence by oxophilic interaction of homochiral sulfoxide-containing o-OPEs with metal cations. Chem Commun (Camb) 2018; 54:13985-13988. [DOI: 10.1039/c8cc08395a] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
CPL switches with high glum and Φ are described.
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