Localised surface plasmon resonance inducing cooperative Jahn–Teller effect for crystal phase-change in a nanocrystal

M Sakamoto, M Hada, W Ota, F Uesugi… - Nature …, 2023 - nature.com
Abstract The Jahn–Teller effect, a phase transition phenomenon involving the spontaneous
breakdown of symmetry in molecules and crystals, causes important physical and chemical …

The simplest structure of a stable radical showing high fluorescence efficiency in solution: benzene donors with triarylmethyl radicals

Y Hattori, R Kitajima, W Ota, R Matsuoka… - Chemical …, 2022 - pubs.rsc.org
Donor–radical acceptor systems have recently attracted much attention as efficient doublet
emitters that offer significant advantages for applications such as OLEDs. We employed an …

Enhanced solid-state phosphorescence of organoplatinum π-systems by ion-pairing assembly

Y Haketa, K Komatsu, H Sei, H Imoba, W Ota… - Chemical …, 2024 - pubs.rsc.org
Anion binding and ion pairing of dipyrrolyldiketone PtII complexes as anion-responsive π-
electronic molecules resulted in photophysical modulations, as observed in solid-state …

Spontaneous-Symmetry-Breaking Charge Separation Induced by Pseudo-Jahn–Teller Distortion in Organic Photovoltaic Material

T Zaima, W Ota, N Haruta, M Uejima… - The Journal of …, 2023 - ACS Publications
The driving force of charge separation in the initial photovoltaic conversion process is
theoretically investigated using ITIC, a nonfullerene acceptor material for organic …

Role of vibronic couplings and energy gap in the internal conversion process of a molecule

W Ota, M Uejima, T Sato - Bulletin of the Chemical Society of …, 2023 - academic.oup.com
An analytical expression for the rate constant of internal conversion (IC) in a molecule was
derived based on the crude adiabatic representation. All vibrational modes were considered …

Intersystem crossing as vibronically induced phonon emission and absorption processes: a unified view of nonradiative transitions in a molecule

W Ota, M Uejima, N Haruta, T Sato - Bulletin of the Chemical …, 2024 - academic.oup.com
An analytical expression for the nonradiative rate constant is derived based on Fermi's
golden rule within the mixed-spin crude adiabatic (CA) approximation. The mixed-spin CA …

Displacive ion movements induced by localised surface plasmon resonance

M Sakamoto, M Hada, F Uesugi, W Ota, T Sato - 2022 - chemrxiv.org
The Jahn–Teller effect, a phase transition phenomenon involving spontaneous breakdown
of symmetry in molecules and crystals, causes important physical and chemical changes …

Boson-Fermion Interactions

A Ceulemans - The Theory of the Jahn-Teller Effect: When a Boson …, 2022 - Springer
Abstract In the Jahn-Teller effect the behaviour of fermion particles is associated with
structural changes, described by boson fields. Our task at present is to understand the …

P‐116: Elucidation of OLED Degradation Mechanism Using Mass Spectrometry and Theoretical Analysis

K Sawada, D Shirakura, T Shibamori… - … Symposium Digest of …, 2023 - Wiley Online Library
We elucidated the degradation mechanism of OLEDs using mass spectrometry and
theoretical analysis. GCIB‐TOF‐SIMS and MS/MS revealed that the carbazole group adduct …

[PDF][PDF] Simplest structure of stable radical showing high-efficiency fluorescence in solution: benzene donors with triarylmethyl radical

Y Hattori, R Kitajima, W Ota, R Matsuoka, T Kusamoto… - Science, 2018 - scholar.archive.org
Donor-radical acceptor systems have recently attracted much attention as efficient doublet
emitters that offers significant advantages for applications such as OLEDs. We employed an …