New perspectives for triplet-triplet annihilation based photon upconversion using all-organic energy donor & acceptor chromophores

Chemical Communications : Chem Comm
Manoj K MannaA Jean-Luc Ayitou

Abstract

It is recognized that metal organic complexes that serve as sensitizers can present various degrees of challenges viz. synthesis and stability for photonic applications such as triplet-triplet annihilation based photon upconversion (TTA-PUC). Presently, researchers, including our group, are turning their attention toward purely organic triplet sensitizers, which can be handled more easily for photon management science. In this review, we surveyed recently developed all-organic chromophoric systems that were devised and used for TTA-PUC research. Knowing that TTA-PUC research has mainly been focused on the design and synthesis of the triplet sensitizers, we detailed the underlying photophysics and thermodynamics that served as the starting point for the synthesis of the purely organic chromophores in question. Accordingly, this review details triplet sensitizers that operate on (i) spin-orbit coupling or heavy atom effect, (ii) Baird-type aromaticity and antiaromaticity, (iii) open-shell characteristics or doublet excited state and (iv) thermally activated delayed fluorescence.

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Citations

Apr 27, 2019·Chemical Communications : Chem Comm·P P Praveen KumarPrakash P Neelakandan
Jan 31, 2020·Chemistry : a European Journal·Florian RauchTodd B Marder
Oct 26, 2018·Physical Chemistry Chemical Physics : PCCP·Nathan T TierceJiun-Haw Lee
Jul 21, 2021·Chemical Reviews·W Russ AlgarHyungki Kim
May 16, 2020·Journal of the American Chemical Society·Björn PfundChristoph Kerzig
Jul 26, 2018·The Journal of Physical Chemistry. a·Jonas Sandby LissauTheis I Sølling
Nov 27, 2018·The Journal of Physical Chemistry. a·Amy L StevensRonald P Steer
Jan 13, 2021·Journal of the American Chemical Society·Jakob B BilgerOliver S Wenger

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Methods Mentioned

BETA
phosphorescence
FRET
light harvesting

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