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Updated: Jul 10, 2025

Preparation of a Corannulene-functionalized Hexahelicene by CopperI-catalyzed Alkyne-azide Cycloaddition of Nonplanar Polyaromatic Units
Published on: September 18, 2016
Synthesis of Nonsymmetric NBN-Embedded [6]- and [7]Helicenes with Amplified Activities
Yang Jiao1, Zuobang Sun1, Zhiheng Wang1
1School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P. R. China.
Abstract:
Two C1-symmetric heterohelicenes were constructed by nonsymmetrically extending the ortho-fused structures of a C2-symmetric NBN-embedded phenalene derivative and featured intense luminescence, large Stokes shifts, and successive reversible redox behaviors. Increasing one fused phenyl unit in such a helical structure led to a 10-fold-enhanced dissymmetry factor. Their strong double hydrogen-bond-donating capability makes them distinctly red-shifted in absorption, emission, and CD and CPL spectra upon the addition of fluoride anion.
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