Molecular motor-functionalized porphyrin macrocycles

Pieter J. Gilissen, Paul B. White, José Augusto Berrocal, Nicolas Vanthuyne, Floris P. J. T. Rutjes, Ben L. Feringa (), Johannes A. A. W. Elemans () and Roeland J. M. Nolte ()
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Pieter J. Gilissen: Radboud University
Paul B. White: Radboud University
José Augusto Berrocal: University of Groningen
Nicolas Vanthuyne: Aix Marseille Univ, CNRS, Centrale Marseille, iSm2
Floris P. J. T. Rutjes: Radboud University
Ben L. Feringa: University of Groningen
Johannes A. A. W. Elemans: Radboud University
Roeland J. M. Nolte: Radboud University

Nature Communications, 2020, vol. 11, issue 1, 1-10

Abstract: Abstract Molecular motors and switches change conformation under the influence of an external stimulus, e.g. light. They can be incorporated into functional systems, allowing the construction of adaptive materials and switchable catalysts. Here, we present two molecular motor-functionalized porphyrin macrocycles for future photo-switchable catalysis. They display helical, planar and point chirality, and are diastereomers, which differ in the relative orientation of the motor and macrocyclic components. Fluorescence, UV-vis, and 1H NMR experiments reveal that the motor-functionalized macrocycles can bind and thread different variants of viologen guests, including a one-side blocked polymeric one of 30 repeat units. The latter feature indicates that the motor systems can find the open end of a polymer chain, thread on it, and move along the chain to eventually bind at the viologen trap, opening possibilities for catalytic writing on single polymer chains via chemical routes.

Date: 2020
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DOI: 10.1038/s41467-020-19123-y

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