Undecabenzo[7]superhelicene: A Helical Nanographene Ribbon as a Circularly Polarized Luminescence Emitter

Angewandte Chemie
Carlos M CruzAraceli G Campaña

Abstract

The synthesis and characterization of an enantiopure superhelicene nanographene is reported in which two saddle-shaped and one planar hexabenzocoronene (HBC) units are arranged in a helicoidal shape to form an undecabenzo[7]carbohelicene. The described compound is the first fully π-extended [7]helicene. Racemic resolution of the helical nanographene permitted analysis of the chiroptical properties and revealed dissymmetry factors in the range of 2×10-3 both in the absorption and in the emission measurements. Remarkably, non-linear photophysical analysis demonstrated a two-photon absorption cross-section of 870 GM at 800 nm and a perfect overlap between linear, non-linear, and chiral emissions.

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Citations

Nov 21, 2018·Angewandte Chemie·Yonggen WangJiaobing Wang
Feb 23, 2019·Chemical Communications : Chem Comm·Chihiro MaedaTadashi Ema
Oct 16, 2019·Angewandte Chemie·Tobias KirschbaumMichael Mastalerz
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Dec 4, 2019·Chemistry : a European Journal·Chihiro MaedaTadashi Ema
Feb 27, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Guoying HanPengfei Yan
Feb 29, 2020·Angewandte Chemie·Chihiro MaedaTadashi Ema
Apr 11, 2019·Angewandte Chemie·Carlos M CruzAraceli G Campaña
Sep 14, 2019·Angewandte Chemie·Paula Mayorga BurrezoJaume Veciana
Mar 12, 2020·Angewandte Chemie·Silvia Castro-FernándezAraceli G Campaña
May 20, 2020·Angewandte Chemie·Vicente G JiménezAraceli G Campaña
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Apr 17, 2020·Chemistry : a European Journal·Chihiro MaedaTadashi Ema
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Jan 8, 2021·Angewandte Chemie·Ying ChenJiaobing Wang
Mar 19, 2021·Journal of the American Chemical Society·Zijie QiuAkimitsu Narita
Mar 21, 2020·Journal of the American Chemical Society·Bo LiuZhaohui Wang
Apr 4, 2020·Journal of the American Chemical Society·Nathaniel J SchusterColin Nuckolls
May 1, 2021·Angewandte Chemie·Mai OdajimaHiroshi Shinokubo
Feb 7, 2021·Angewandte Chemie· ChaolumenKenichiro Itami
Sep 10, 2020·Journal of the American Chemical Society·Shuang MaJiaobing Wang
May 31, 2019·The Journal of Physical Chemistry Letters·Wenjie ChenPengfei Duan

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