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Zwitterionic [4]helicene: a water-soluble and reversible pH-triggered ECD/CPL chiroptical switch in the UV and red spectral regions

Abstract : The chiroptical switching properties of a readily accessible and water-soluble diaza [4]helicene are disclosed. This zwitterionic dye displays pH-dependent absorption and emission properties and this enables a reversible turn on/off of electronic circular dichroism at 300 nm and of circularly polarized luminescence in the red region upon protonation/deprotonation.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01319873
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Submitted on : Friday, July 8, 2016 - 1:23:45 PM
Last modification on : Friday, July 10, 2020 - 4:24:44 PM

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Simon Pascal, Céline Besnard, Francesco Zinna, Lorenzo Di Bari, Boris Le Guennic, et al.. Zwitterionic [4]helicene: a water-soluble and reversible pH-triggered ECD/CPL chiroptical switch in the UV and red spectral regions. Organic and Biomolecular Chemistry, Royal Society of Chemistry, 2016, 14 (20), pp.4590-4594. ⟨10.1039/c6ob00752j⟩. ⟨hal-01319873⟩

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