A1 Journal article (refereed)
Damming an electronic energy reservoir : ion-regulated electronic energy shuttling in a [2]rotaxane (2021)

Yu, S., Kupryakov, A., Lewis, J. E. M., Martí-Centelles, V., Goldup, S. M., Pozzo, J.-L., Jonusauskas, G., & McClenaghan, N. D. (2021). Damming an electronic energy reservoir : ion-regulated electronic energy shuttling in a [2]rotaxane. Chemical Science, 12(26), 9196-9200. https://doi.org/10.1039/D1SC02225C

JYU authors or editors

Publication details

All authors or editors: Yu, Shilin; Kupryakov, Arkady; Lewis, James E. M.; Martí-Centelles, Vicente; Goldup, Stephen M.; Pozzo, Jean-Luc; Jonusauskas, Gediminas; McClenaghan, Nathan D.

Journal or series: Chemical Science

ISSN: 2041-6520

eISSN: 2041-6539

Publication year: 2021

Volume: 12

Issue number: 26

Pages range: 9196-9200

Publisher: Royal Society of Chemistry (RSC)

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1039/D1SC02225C

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/77023

Abstract

We demonstrate the first example of bidirectional reversible electronic energy transfer (REET) between the mechanically bonded components of a rotaxane. Our prototypical system was designed such that photoexcitation of a chromophore in the axle results in temporary storage of electronic energy in a quasi-isoenergetic “reservoir” chromophore in the macrocycle. Over time, the emissive state of the axle is repopulated from this reservoir, resulting in long-lived, delayed luminescence. Importantly, we show that cation binding in the cavity formed by the mechanical bond perturbs the axle chromophore energy levels, modulating the REET process, and ultimately providing a luminescence read-out of cation binding. Modulation of REET processes represents an unexplored mechanism in luminescent molecular sensor development.

Keywords: supramolecular chemistry; photochemistry; luminescence

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 3