C2-Symmetric Dibenzosuberane-based Helicenes as Potential Chirochromic Optical Switches and Amorphou

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Three C2-symmetric (10R,11R)-diethyl substituted dibenzosuberane (DBS)-based helicenes with varying steric and conjugation demands of their bottom fragments were synthesized. Only the helicene-7a[with the bottom part derived from tetralone was found photo
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