Synthesis and STM Imaging of Symmetric and Dissymmetric Ethynyl-Bridged Dimers of Boron–Subphthalocyanine Bowl-Shaped Nanowheels



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The future's wheel: A new class of wheels, based on subphthalocyanine fragments, for future incorporation in functional nanovehicles is reported (see figure). The syntheses of a symmetric wheel, a nitrogen-tagged wheel, and their ethynyl-bridged homodimers are presented. Theoretical calculations and STM imaging demonstrate the advantage of a bowl-shaped structure and the efficiency of the tag for STM imaging.