报告人：Hironori Kaji教授（Kyoto University, 京都大学）
报告题目：Our Recent Studies on OLEDs
报告时间：2025年10月27日下午2:30
报告地点：909 B厅
报告摘要：
We are currently conducting research on OLEDs based on the following five aspects: 1) high-throughput development of TADF materials and realization of highly efficient OLEDs,1-3 2) development of inverted singlet-triplet energy gap (iST) materials,4-5 3) quantitative prediction and fundamental understanding of emission processes in OLEDs based on precise quantum chemical calculations,6 4) quantitative prediction and fundamental understanding of charge transports in OLEDs based on multiscale simulations,7-9 and 5) NMR analysis of OLEDs.10 Here, we outline the overall and then discuss recent developments in 2) and 3). We have recently succeeded in proposing a method to theoretically predict rate constants and quantum yields of all electronic transitions related to emission quantitatively. It also allows quantitative predictions of time evolutions of excitons. Our prediction method is applicable to a wide variety of systems. We recently applied this method to organophotocatalysts for Alzheimer's disease.11,12 We will also present our recent studies on iST emitters.
We express sincere thanks to my group members, Dr. Mitsunuma, and Prof. Kanai. This work was supported by JST CREST Grant Number: JPMJCR2431, JSPS KAKENHI Grant Number: JP20H05840 (Grant-in-Aid for Transformative Research Areas, “Dynamic Exciton”), and JSPS Core-to-Core Program Grant Number: JPJSCCA20220004.
References:
[1] Kaji, H., et al., Nat. Commun., 6, 8476, 2015.
[2] Wada, Y.; Nakagawa, H.; Matsumoto, S.; Wakisaka, Y.; Kaji, H., Nat. Photon., 14, 643, 2020.
[3] Yasuda, Y.; Shizu, K.; Tanaka, H.; Kaji, H., Angew. Chem. Int. Ed., 64, e202504390, 2025.
[4] Kusakabe, Y.; Shizu, K.; Tanaka, H.; Tanaka, K.; Kaji, H., Appl. Phys. Express, 17, 061001, 2024.
[5] Okumura, R., et al., Angew. Chem. Int. Ed., e202409670, 2024.
[6] Shizu, K.; Kaji, H., Nat. Commun., 15, 4723, 2024.
[7] Kubo, S.; Kaji, H., Sci. Rep., 8, 13462, 2018.
[8] Sato, H.; Kanda, S.; Kaji, H., npj Comput. Mater., 11, 39, 2025.
[9] Ishihara, K.; Kaji, H., Commun. Mater., 6, 116, 2025.
[10] Suzuki, K.; Kaji, H., J. Am. Chem. Soc., 145, 16324, 2023.
[11] Furuta, M., et al., Adv. Sci., 11, 2401346, 2024.
[12] Yamane, M., et al., J. Am. Chem. Soc.,147, 28860, 2025.
个人简介 ：
Hironori Kaji received his Ph.D. in inorganic chemistry from Kyoto University in 1994. In 1994, he joined Institute for Chemical Research, Kyoto University, as Assistant Professor, where in 2003 he was promoted to Associate Professor and in 2009 to Full Professor. He was a visiting scientist at University of Massachusetts (Amherst) from 1998 to 1999. He was a research fellow of the PRESTO program in JST from 2002 to 2006. His present research interests center on molecular design for the fabrication of excellent OLEDs, quantum chemical calculations and multiscale simulations for comprehensive understanding of the emission and charge transport mechanisms in OLEDs, and development of advanced solid-state NMR methodologies.
联系人：蒋佐权 教授