M
Masaki Saigo
Researcher at Kyushu University
Publications - 11
Citations - 117
Masaki Saigo is an academic researcher from Kyushu University. The author has contributed to research in topics: Excited state & Chemistry. The author has an hindex of 3, co-authored 7 publications receiving 66 citations.
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Journal ArticleDOI
Investigation of excited state, reductive quenching, and intramolecular electron transfer of Ru(II)–Re(I) supramolecular photocatalysts for CO2 reduction using time-resolved IR measurements
Kazuhide Koike,David C. Grills,Yusuke Tamaki,Etsuko Fujita,Kei Okubo,Yasuomi Yamazaki,Masaki Saigo,Tatsuhiko Mukuta,Ken Onda,Osamu Ishitani +9 more
TL;DR: Time-resolved IR spectra indicated fast electron transfer from the reduced photosensitizer to the catalyst.
Journal ArticleDOI
Suppression of Structural Change upon S1-T1 Conversion Assists the Thermally Activated Delayed Fluorescence Process in Carbazole-Benzonitrile Derivatives.
TL;DR: It is found that the most TadF-active molecule, 4CzBN, shows little structural change after photoexcitation, while the TADF-inactive molecules show relatively large deformation upon S1-T1 conversion, which implies that the suppression of structural deformation is critical for minimizing the activation energy barrier for RISC in cases of the Cz-BN derivatives.
Journal ArticleDOI
Intramolecular-rotation driven triplet-to-singlet upconversion and fluctuation induced fluorescence activation in linearly connected donor-acceptor molecules.
TL;DR: It is uncovered that the structural restriction of the intramolecular flexibility significantly affects the optimized geometry and phonon modes coupled to the spin conversion, providing a microscopic strategy to control the optoelectronic properties from a molecular viewpoint.
Journal ArticleDOI
Eliminating the Reverse ISC Bottleneck of TADF Through Excited State Engineering and Environment‐Tuning Toward State Resonance Leading to Mono‐Exponential Sub‐µs Decay. High OLED External Quantum Efficiency Confirms Efficient Exciton Harvesting
Hartmut Yersin,Rafał Czerwieniec,Larisa Mataranga-Popa,Jan-Michael Mewes,Gang Cheng,Chi-Ming Che,Masaki Saigo,Shuji Kimura,Kiyoshi Miyata,Ken Onda +9 more
TL;DR: In this article , the electronic structure and photophysics of the recently designed organic direct singlet harvesting (DSH) molecule are explored, in which donor (D) and acceptor (A) are held at distance by two bridges.