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Dynamic Molecular Invasion into a Multiply Interlocked Catenane
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- Yasuyuki Yamada
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho Chikusa-ku Naogya 464-8602 Japan
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- Ryohei Itoh
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho Chikusa-ku Naogya 464-8602 Japan
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- Sayaka Ogino
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho Chikusa-ku Naogya 464-8602 Japan
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- Tatsuhisa Kato
- Department of Interdisciplinary Environment Graduate School of Human and Environmental Studies Kyoto University Yoshidanihonmatsu-cho Sakyo-ku Kyoto 606-8501 Japan
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- Kentaro Tanaka
- Department of Chemistry Graduate School of Science Nagoya University Furo-cho Chikusa-ku Naogya 464-8602 Japan
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Description
<jats:title>Abstract</jats:title><jats:p>A multiply interlocked catenane with a novel molecular topology was synthesized; a phthalocyanine bearing four peripheral crown ethers was quadruply interlocked with a cofacial porphyrin dimer bridged with four alkylammonium chains. The supramolecular conjugate has two nanospaces surrounded by a porphyrin, a phthalocyanine, and four alkyl chains to accommodate guest molecules. Because the phthalocyanine can move along the alkyl chains, it acts as an adjustable wall, thus permitting the invasion of large molecules into the nanospaces without spoiling the affinity of the association. The dynamic molecular invasion allowed the intercalation of dianionic porphyrins into both nanospaces with high affinity. A photometric titration experiment revealed the two‐step inclusion phenomenon. The multiply interlocked catenane complexed with three Cu<jats:sup>2+</jats:sup> ions, and the spin–spin interaction was switched off by the intercalation of dianionic porphyrins.</jats:p>
Journal
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- Angewandte Chemie
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Angewandte Chemie 129 (45), 14312-14317, 2017-10-04
Wiley