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A molecular cake: Zinc chlorins with different dendron wedges can form linear or circular self-assembled structures with different molecular packing. In particular, zinc chlorins with six alkyl chains in the dendron group self-assemble into hexameric cyclic structures on HOPG (see picture). Such cyclic structures are reminiscent of (bacterio)chlorophyll organization in natural light-harvesting systems.
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Uemura et al. (2009) studied this question.
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