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Merging polyacenes and cationic helicenes: from weak to intense chiroptical properties in the far red region†
Chemical Science ( IF 9.969 ) Pub Date : 2023-02-15 , DOI: 10.1039/c9sc05407c Romain Duwald, Johann Bosson, Simon Pascal, Stéphane Grass, Francesco Zinna, Céline Besnard, Lorenzo Di Bari, Denis Jacquemin, Jérôme Lacour
Chemical Science ( IF 9.969 ) Pub Date : 2023-02-15 , DOI: 10.1039/c9sc05407c Romain Duwald, Johann Bosson, Simon Pascal, Stéphane Grass, Francesco Zinna, Céline Besnard, Lorenzo Di Bari, Denis Jacquemin, Jérôme Lacour
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A series of helical tetracenes and pentacenes was synthesized from cationic [6] and [4]helicene precursors. These colorful acenes fluoresce in the far red region. While [4]helicene-based pentacenes exhibit chiroptical properties mainly in the UV region, [6]helicene-derived tetracenes show enhanced ECD in the visible range, in addition to clear CPL responses. This difference is rationalized using first principles.
更新日期：2020-01-01
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