Light triggers molecular shuttling in rotaxanes: control over proximity and charge recombination

Wolf M, Ogawa A, Bechtold M, Vonesch M, Wytko JA, Oohora K, Campidelli S, Hayashi T, Guldi DM, Weiss J (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Chemical Science Royal Society of Chemistry

Book Volume: 10

Pages Range: 3846-3853

Journal Issue: 13

DOI: 10.1039/c8sc05328f

Abstract

We present the synthesis of novel rotaxanes based on mechanically interlocked porphyrins and fullerene and their advanced investigations by means of photophysical measurements. To this end, a fullerene-capped dumbbell-type axle containing a central triazole was threaded through strapped (metallo) porphyrins-either a free-base or a zinc porphyrin. Femtosecond-resolved transient absorption measurements revealed charge-separation between the porphyrin and fullerene upon light excitation. Solvent polarity and solvent coordination effects induced molecular motion of the rotaxanes upon charge separation and enabled, for the first time, subtle control over the charge recombination by enabling and controlling the directionality of shuttling.

Authors with CRIS profile

Maximilian Wolf Lehrstuhl für Physikalische Chemie I Mareike Bechtold Lehrstuhl für Physikalische Chemie I Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I

Involved external institutions

Osaka University / 大阪大学 JP Japan (JP) Université de Strasbourg (UDS) FR France (FR) École Polytechnique - Université Paris-Saclay FR France (FR)

How to cite

APA:

Wolf, M., Ogawa, A., Bechtold, M., Vonesch, M., Wytko, J.A., Oohora, K.,... Weiss, J. (2019). Light triggers molecular shuttling in rotaxanes: control over proximity and charge recombination. Chemical Science, 10(13), 3846-3853. https://doi.org/10.1039/c8sc05328f

MLA:

Wolf, Maximilian, et al. "Light triggers molecular shuttling in rotaxanes: control over proximity and charge recombination." Chemical Science 10.13 (2019): 3846-3853.

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