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 editorsYu, Shilin; Kupryakov, Arkady; Lewis, James E. M.; Martí-Centelles, Vicente; Goldup, Stephen M.; Pozzo, Jean-Luc; Jonusauskas, Gediminas; McClenaghan, Nathan D.

Journal or seriesChemical Science



Publication year2021


Issue number26

Pages range9196-9200

PublisherRoyal Society of Chemistry (RSC)

Publication countryUnited Kingdom

Publication languageEnglish


Publication open accessOpenly available

Publication channel open accessOpen Access channel

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


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.

Keywordssupramolecular chemistryphotochemistryluminescence

Contributing organizations

Ministry reportingYes

Reporting Year2021

JUFO rating3

Last updated on 2024-22-04 at 21:31