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