Recent advances in triplet–triplet annihilation upconversion and singlet fission, towards solar energy applications

AJ Carrod, V Gray, K Börjesson - Energy & Environmental Science, 2022 - pubs.rsc.org
Solar energy is an ample renewable energy resource, with photovoltaic (PV) technology
enabling a direct route from light to electricity. Currently, PVs are limited in photon …

Expanded theory of H-and J-molecular aggregates: the effects of vibronic coupling and intermolecular charge transfer

NJ Hestand, FC Spano - Chemical reviews, 2018 - ACS Publications
The electronic excited states of molecular aggregates and their photophysical signatures
have long fascinated spectroscopists and theoreticians alike since the advent of Frenkel …

Efficient multiexciton state generation in charge-transfer-coupled perylene bisimide dimers via structural control

Y Hong, J Kim, W Kim, C Kaufmann, H Kim… - Journal of the …, 2020 - ACS Publications
The singlet fission (SF) process is generally defined as the conversion of one singlet exciton
(S1) into two triplet excitons (2· T1), which has the potential to overcome thermalization …

Linker-dependent singlet fission in tetracene dimers

NV Korovina, J Joy, X Feng… - Journal of the …, 2018 - ACS Publications
Separation of triplet excitons produced by singlet fission is crucial for efficient application of
singlet fission materials. While earlier works explored the first step of singlet fission, the …

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 …

Switching between coherent and incoherent singlet fission via solvent-induced symmetry breaking

AM Alvertis, S Lukman, TJH Hele… - Journal of the …, 2019 - ACS Publications
Singlet fission in organic semiconductors causes a singlet exciton to decay into a pair of
triplet excitons and holds potential for increasing the efficiency of photovoltaic devices. In …

Employing Singlet Fission into Boosting the Generation of Singlet Oxygen and Superoxide Radicals for Photooxidation Reactions

T Wang, H Liu, X Wang, L Tang, J Zhou, X Song… - ACS …, 2023 - ACS Publications
Developing highly efficient heavy-metal-free photosensitizers (PSs) for the production of
reactive oxygen species (ROS) is urgent to achieve wide applications of ROS, yet it remains …

Molecular insights and concepts to engineer singlet fission energy conversion devices

R Casillas, I Papadopoulos, T Ullrich, D Thiel… - Energy & …, 2020 - pubs.rsc.org
In this Review, we showcase the fundamental processes of intermolecular and
intramolecular singlet fission (SF). Furthermore we prioritize the information, which is …

Conformational Planarization versus Singlet Fission: Distinct Excited‐State Dynamics of Cyclooctatetraene‐Fused Acene Dimers

T Yamakado, S Takahashi, K Watanabe… - Angewandte …, 2018 - Wiley Online Library
A set of flapping acene dimers fused with an 8π cyclooctatetraene (COT) ring showed
distinct excited‐state dynamics in solution. While the anthracene dimer showed a fast V …

Striking the right balance of intermolecular coupling for high-efficiency singlet fission

RD Pensack, AJ Tilley, C Grieco, GE Purdum… - Chemical …, 2018 - pubs.rsc.org
Singlet fission is a process that splits collective excitations, or excitons, into two with unity
efficiency. This exciton splitting process, unique to molecular photophysics, has the potential …