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Singlet FissionMultiple exciton generation (MEG) is a rapidly growing area in photophysics that has yet to be exploited in photochemistry. The molecular version of MEG is singlet fission—the generation of two independent triplet excitons from a single photon. From these unconventional exciton dynamics, light harvesting mechanisms can be envisioned to exploit a) the amplification properties that result when two excitons/charge carriers are created from one photon (optoelectronics), b) the rapid population of spin correlated quantum states (quantum information), and c) the activation of localized multielectron reaction centers (photochemistry and photocatalysis).
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