Issue 44, 2023

Förster resonance energy transfer involving the triplet state

Abstract

Triplet harvesting is important for high-efficiency optoelectronics devices, time-resolved bioimaging, sensing, and anti-counterfeiting devices. Förster resonance energy transfer (FRET) from the donor (D) to the acceptor (A) is important to efficiently harvest the triplet excitons after a variety of excitations. However, general explanations of the key factors of FRET from the singlet state (FRETS-S) via reverse intersystem crossing and FRET from the triplet state (FRETT-S) have not been reported beyond spectral overlap between emission of the D and absorption of the A. This feature article gives an overview of FRET involving the triplet state. After discussing the contribution of the radiation yield from the state of the D considering spin-forbidden factors of FRET, a variety of schemes involving triplet states, such as FRETS-Svia reverse intersystem crossing from the triplet state, dual FRETS-S and FRETT-S, and selective FRETT-S, are introduced. Representative examples, including the chemical structure and FRET for triplet harvesting, are highlighted using emerging applications in optoelectronics and afterglow imaging. Finally, recent developments of using FRET involving triplet states for high-efficiency optoelectronic devices and time-resolved bioimaging are discussed. This article provides crucial information for controlling state-of-the-art properties using FRET involving the triplet state.

Graphical abstract: Förster resonance energy transfer involving the triplet state

Article information

Article type
Feature Article
Submitted
26 رجب 1444
Accepted
05 شوال 1444
First published
05 شوال 1444

Chem. Commun., 2023,59, 6643-6659

Author version available

Förster resonance energy transfer involving the triplet state

B. Sk and S. Hirata, Chem. Commun., 2023, 59, 6643 DOI: 10.1039/D3CC00748K

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