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Light-induced piston nanoengine: ultrafast shuttling of a styryl dye inside cucurbit[7]uril

Abstract

Combination of photoactive styryl(pyridinium) dyes and cucurbit[7]uril (CB[7]) in an integrate supramolecular system allowed us to design a novel high speed molecular machine based on the fully reversible shuttling motion of the dye inside the CB[7] host cavity. The driving force of this movement is the electrostatic potential change after the intramolecular charge transfer occurrs in the excited state of the dye molecule that can be externally controlled by light. Steady-state and time-resolved optical spectroscopy as well as DFT calculations provided an unambiguous evidence for the ultrafast piston-like movement of the system between two states. The shuttling process occurs in the picosecond timescale and its bistability depends on the strength of the dye donor fragment.

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Publication details

The article was received on 26 Jun 2017, accepted on 07 Sep 2017 and first published on 08 Sep 2017


Article type: Communication
DOI: 10.1039/C7CP04283C
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Light-induced piston nanoengine: ultrafast shuttling of a styryl dye inside cucurbit[7]uril

    E. Y. Chernikova, D. V. Berdnikova, Y. V. Fedorov, O. Fedorova, F. Maurel and G. Jonusauskas, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP04283C

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