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Poly-para-phenylene polyrotaxane 1 is the first conjugated polyrotaxane. The naphthalene end groups prevent the β-cyclodextrin rings from slipping off the conjugated backbone in solution. The matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrum shows a series of oligomers, up to a [10]rotaxane.
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Taylor et al. (2000) studied this question.
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