The surrounding shapes the box: The zinc porphyrin dimer 1 bearing pyridyl groups can chiroptically sense an asymmetric hydrocarbon, such as limonene, by forming the homochiral box-shaped tetrameric assembly BOX⊥. As the BOX⊥ formed is enantiomerically enriched, the optical purity as well as the absolute configuration of the solvent limonene can be determined.
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Aimi et al. (2007) studied this question.
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