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dabna-combined.pdf (7.22 MB)
Three-State-Involving Vibronic Resonance Is a Key to Enhancing Reverse Intersystem Crossing Dynamics of Organoboron-Based Ultrapure Blue Emitters
Preprints are manuscripts made publicly available before they have been submitted for formal peer review and publication. They might contain new research findings or data. Preprints can be a draft or final version of an author's research but must not have been accepted for publication at the time of submission.
submitted on 03.06.2020 and posted on 04.06.2020by Inkoo Kim, Kwuang Hyun Cho, Soon Ok Jeon, Won-Joon Son, Dongwook Kim, Young Min Rhee, Inkook Jang, Hyeonho Choi, Dae Sin Kim
In organoboron OLED emitter DABNA, vibronic resonance strongly enhances reverse intersystem crossing rate even with a sizable T1-S1 energy gap. The resonance is peculiar in that the vibrational frequency has to match both (1) the T1-S1 energy gap and (2) the T1-T3 nonadiabatic coupling oscillation frequency. This three-state involving resonance is a result of combination of T1-T3-S1 superexchange and T1-T3 non-Condon coupling.