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A template-directed sixfold dimerization of alkyne units is the final step in the synthesis of the title compound leading to nanoscale 2D rigid wheel-shaped oligo(phenylene ethynylene)s. Solubilizing side groups allow full characterization by NMR spectroscopy, GPC, MALDI-TOF MS, and STM. The distance between two peripheral tert-butyl groups at opposite sites of the oligomer is estimated to be 7 nm.
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Mössinger et al. (2007) studied this question.
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