About the Research
Research Theme
Organic Optoelectronic Materials
Keyword
Organic LEDs, Singlet-Triplet Inversion, Organic Synthesis, Time-Resolved Spectroscopy, Excited-State Calculations, Machine Learning
Research Outline
Getting to Grips with Exciton Spin Flips – Our research investigates novel excitonic properties of organic molecules and leverages them to develop optoelectronic devices such as organic light-emitting diodes (OLEDs). Our mission is to integrate theoretical calculations, machine learning, organic synthesis, photophysical characterization, and device applications to uncover design principles for next-generation organic optoelectronic materials.
Representative Research Achievements
- Bayesian Molecular Optimization for Accelerating Reverse Intersystem Crossing
T. Won, N. Aizawa,* Y. Harabuchi,* R. Kurihara, M. Suzuki, S. Maeda, Y.-J. Pu, K. Nakayama, ChemRxiv
DOI: 10.26434/chemrxiv-2024-vjl0k - Delayed Fluorescence from Inverted Singlet and Triplet Excited States
N. Aizawa,* Y.-J. Pu,* Y. Harabuchi, A. Nihonyanagi, R. Ibuka, H. Inuzuka, B. Dhara, Y. Koyama, K. Nakayama, S. Maeda, F. Araoka, D. Miyajiam* Nature 2022, 609, 502–506.
DOI: 10.1038/s41586-022-05132-y - Electron Spin Resonance Resolves Intermediate Triplet States in Delayed Fluorescence
B. H. Drummond, N. Aizawa, Y. Zhang, W. K. Myers, Y. Xiong, M. W. Cooper, S. Barlow, Q. Gu, L. R. Weiss, A. J. Gillett, D. Credgington, Y.-J. Pu, S. R. Marder, E. W. Evans* Nat. Commun. 2021, 12, 4532.
DOI: 10.1038/s41467-021-24612-9 - Thermal Equilibration between Singlet and Triplet Excited States in Organic Fluorophore for Submicrosecond Delayed Fluorescence
N. Aizawa, A. Matsumoto, T. Yasuda* Sci. Adv. 2021, 7, 5769.
DOI: 10.1126/sciadv.abe5769 - Kinetic Prediction of Reverse Intersystem Crossing in Organic Donor–Acceptor Molecules
N. Aizawa,* Y. Harabuchi,* S. Maeda, Y.-J. Pu Nat. Commun. 2020, 11, 3909.
DOI: 10.1038/s41467-020-17777-2