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- W4200018832 abstract "Herein, we report the synthesis, structural analysis, optical and chiroptical properties of a novel quadruple helicene, which has two [6] and two [7]helicene moieties fused in a contorted framework of 92 sp2 carbon atoms. It was synthesized by the Scholl reaction of a perylene-containing substrate with the formation of eight carbon-carbon bonds on the perylene unit in a single synthetic operation. Chemical oxidation of the quadruple helicene with tris(4-bromophenyl)ammoniumyl hexachloroantimonate resulted in an air-stable dication, which exhibits the same helicity in its four helicene moieties as unambiguously identified by single-crystal X-ray crystallography. The quadruple helicene exhibits unusual near-infrared absorption and emission with absorption and emission maxima at 848 nm and 977 nm, respectively, and its isolated enantiomers exhibit electronic circular dichroism in the near-infrared and visible-light regions." @default.
- W4200018832 created "2021-12-31" @default.
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- W4200018832 date "2022-01-11" @default.
- W4200018832 modified "2023-09-30" @default.
- W4200018832 title "A Near‐Infrared Absorbing and Emissive Quadruple Helicene Enabled by the Scholl Reaction of Perylene" @default.
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- W4200018832 doi "https://doi.org/10.1002/anie.202113203" @default.
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