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Damming an Electronic Energy Reservoir: Ion-regulated Electronic Energy Shuttling in a [2]Rotaxaneстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Shilin Yu, Jonusauskas Gediminas, Pozzo Jean-Luc, Goldup Stephen, Martí Centelles Vicente, McClenaghan Nathan D., Lewis James E.M., Kupryakov Arkady S.
- Журнал: Chemical science
- Год издания: 2021
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- DOI: 10.1039/d1sc02225c
- Аннотация: 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.
- Добавил в систему: Jonusauskas Gediminas