Pitfalls of quantifying intersystem crossing rates in singlet-fission chromophore solutions [PDF]
, 2022 Singlet fission (SF), a process that produces two triplet excitons from one singlet exciton, has attracted recent interest for its potential to circumvent the detailed-balance efficiency limit of single-junction solar cells. For the potential of SF to be
Alexandra, Stuart +3 more
core +2 more sources
Parallel triplet formation pathways in a singlet fission material
Nature Communications, 2022 The singlet fission mechanism is still not relatively well understood, except for polyacenes. Here, the authors demonstrate that in diketopyrrolopyrrole supramolecular assemblies, both singlet fission and intersystem crossing can simultaneously happen.
Nilabja Maity +11 more
doaj +1 more source
Photoinduced Intersystem Crossing in DNA Oxidative Lesions and Epigenetic Intermediates [PDF]
, 2020 The propensity of 5-formyluracil and 5-formylcytosine, i.e. oxidative lesions and epigenetic intermediates, in acting as intrinsic DNA photosensitizers is unraveled by using a combination of molecular modeling, simulation and spectroscopy. Exploration of
Antonio Francés-Monerris (8562592) +9 more
core +3 more sources
Aggregate, 2023 Buckybowl structures as non‐uniform electrostatic potential distributions of polycyclic aromatic materials show a unique photoelectric performance. In this work, OTC was utilized for dynamic modulation of triplet exciton transition processes.
Yongfeng Zhang +12 more
doaj +1 more source
Extended theoretical modeling of reverse intersystem crossing for thermally activated delayed fluorescence materials [PDF]
, 2023 Thermally activated delayed fluorescence (TADF) materials and multi-resonant (MR) variants are promising organic emitters that can achieve an internal electroluminescence quantum efficiency of approximately 100%.
Takeshi, Yanai +4 more
core +2 more sources
Spin statistics for triplet-triplet annihilation upconversion: exchange coupling, intermolecular orientation and reverse intersystem crossing [PDF]
, 2021 Triplet-triplet annihilation upconversion (TTA-UC) has great potential for significantly improving the light harvesting capabilities of photovoltaic cells, as well as being sought after for biomedical applications.
Nobuhiro , Yanai +5 more
core +2 more sources
Elucidating complex triplet-state dynamics in the model system isopropylthioxanthone
iScience, 2022 Summary: We introduce techniques for probing the dynamics of triplet states. We employ these tools, along with conventional techniques, to develop a detailed understanding of a complex chemical system: a negative-tone, radical photoresist for multiphoton
Nikolaos Liaros +11 more
doaj +1 more source
Visualizing excited state dynamics of conjugated molecules trough femtosecond stimulated Raman scattering [PDF]
EPJ Web of Conferences, 2019 The reaction pathway in the photoexcited model compound 2-methyl-5-phenylthiophene has been unravelled by Femtosecond Stimulated Raman Scattering and quantum chemical calculations.
Giovanni Batignani +5 more
doaj +1 more source
Ballistic ΔS=2 Intersystem Crossing in a Cobalt Cubane Following Ligand-Field Excitation Probed by Extreme Ultraviolet Spectroscopy [PDF]
, 2021 Femtosecond M2,3-edge X-ray absorption near-edge structure (XANES) spectroscopy is used to probe the excited-state dynamics of the cobalt cubane [CoIII4O4](OAc)4(py)4 (OAc = acetate, py = pyridine), a model for water oxidation catalysts.
Josh, Vura-Weis, Yusef, Shari\u27ati
core +2 more sources
Direct observation of structural dynamics upon photo-excitation in a spin crossover crystal with femtosecond electron diffraction [PDF]
EPJ Web of Conferences, 2019 Photoinduced spin transitions are studied by femtosecond electron diffraction to understand ultrafast structural dynamics associated with intersystem crossing.
Jiang Yifeng +9 more
doaj +1 more source