A series of helical tetracenes and pentacenes was synthesized from cationic [6] and [4]helicene precursors.These colorful acenesfluoresce in the far red region. While [4]helicene-based pentacenes exhibitchiroptical properties mainly in the UV region, [6]helicene-derived tetracenes show enhanced ECD in thevisible range, in addition to clear CPL responses. This difference is rationalized usingfirst principles.
Merging polyacenes and cationic helicenes: from weak to intense chiroptical properties in the far red region
Zinna, Francesco;Di Bari, Lorenzo;
2019-01-01
Abstract
A series of helical tetracenes and pentacenes was synthesized from cationic [6] and [4]helicene precursors.These colorful acenesfluoresce in the far red region. While [4]helicene-based pentacenes exhibitchiroptical properties mainly in the UV region, [6]helicene-derived tetracenes show enhanced ECD in thevisible range, in addition to clear CPL responses. This difference is rationalized usingfirst principles.File in questo prodotto:
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