Subphthalocyanine-Stoppered [2]Rotaxanes: Synthesis and Size/Energy Threshold of Slippage

Yuto Kage, Soji Shimizu, Gabriele Kociok-Köhn, Hiroyuki Furuta, G. Dan Pantoş

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    Subphthalocyanine (SubPc)-stoppered [2]rotaxanes were synthesized for the first time. The rotaxane bearing unsubstituted SubPc as a stopper exhibited an equilibrium of slipping-on and slipping-off, whereas a perfluorinated SubPc stopper completely blocked slippage of the ring due to its slightly larger size. Kinetic studies revealed the Gibbs free energy of activation for the slipping-on and slipping-off processes. The optical properties of the rotaxanes, including photoinduced electron transfer, were also revealed.

    Original languageEnglish
    Pages (from-to)1096-1101
    Number of pages6
    JournalOrganic letters
    Volume22
    Issue number3
    DOIs
    Publication statusPublished - Feb 7 2020

    All Science Journal Classification (ASJC) codes

    • Biochemistry
    • Physical and Theoretical Chemistry
    • Organic Chemistry

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