Theoretical modeling of singlet fission

D Casanova - Chemical reviews, 2018‏ - ACS Publications
Singlet fission is a photophysical reaction in which a singlet excited electronic state splits
into two spin-triplet states. Singlet fission was discovered more than 50 years ago, but the …

Mixed electronic states in molecular dimers: Connecting singlet fission, excimer formation, and symmetry-breaking charge transfer

RM Young, MR Wasielewski - Accounts of chemical research, 2020‏ - ACS Publications
Conspectus Chromophore aggregates are capable of a wide variety of excited-state
dynamics that are potentially of great use in optoelectronic devices based on organic …

Unconventional singlet fission materials

T Ullrich, D Munz, DM Guldi - Chemical Society Reviews, 2021‏ - pubs.rsc.org
Singlet fission (SF) is a photophysical downconversion pathway, in which a singlet excitation
transforms into two triplet excited states. As such, it constitutes an exciton multiplication …

Diphenylanthracene dimers for triplet–triplet annihilation photon upconversion: mechanistic insights for intramolecular pathways and the importance of molecular …

A Olesund, V Gray, J Mårtensson… - Journal of the American …, 2021‏ - ACS Publications
Novel approaches to modify the spectral output of the sun have seen a surge in interest
recently, with triplet–triplet annihilation driven photon upconversion (TTA-UC) gaining …

Spin statistics for triplet–triplet annihilation upconversion: Exchange coupling, intermolecular orientation, and reverse intersystem crossing

DG Bossanyi, Y Sasaki, S Wang, D Chekulaev… - JACS Au, 2021‏ - ACS Publications
Triplet–triplet annihilation upconversion (TTA-UC) has great potential to significantly
improve the light harvesting capabilities of photovoltaic cells and is also sought after for …

Triplet-pair states in organic semiconductors

AJ Musser, J Clark - Annual review of physical chemistry, 2019‏ - annualreviews.org
Entanglement of states is one of the most surprising and counterintuitive consequences of
quantum mechanics, with potent applications in cryptography and computing. In organic …

Using molecular design to enhance the coherence time of quintet multiexcitons generated by singlet fission in single crystals

RM Jacobberger, Y Qiu, ML Williams… - Journal of the …, 2022‏ - ACS Publications
Multiexciton quintet states, 5 (TT), photogenerated in organic semiconductors using singlet
fission (SF), consist of four quantum entangled spins, promising to enable new applications …

Computational tools for the simulation and analysis of spin-polarized EPR spectra

CE Tait, MD Krzyaniak, S Stoll - Journal of Magnetic Resonance, 2023‏ - Elsevier
The EPR spectra of paramagnetic species induced by photoexcitation typically exhibit
enhanced absorptive and emissive features resulting from sublevel populations that differ …

Spatial separation of triplet excitons drives endothermic singlet fission

NV Korovina, CH Chang, JC Johnson - Nature Chemistry, 2020‏ - nature.com
Molecules that undergo singlet fission, converting singlet excitons into pairs of triplet
excitons, have potential as photovoltaic materials. The possible advantages of endothermic …

Exploiting excited-state aromaticity to design highly stable singlet fission materials

KJ Fallon, P Budden, E Salvadori… - Journal of the …, 2019‏ - ACS Publications
Singlet fission, the process of forming two triplet excitons from one singlet exciton, is a
characteristic reserved for only a handful of organic molecules due to the atypical energetic …