| Identification | Back Directory | [Name]
2PTZBN | [CAS]
2250280-17-0 | [Synonyms]
2PTZBN
[1,4]Benzothiazino[4′′,3′′,2′′:1′,8′][1,4]benzazaborino[4′,3′,2′:4,5][1,4]benzazaborino[3,2,1-kl]phenothiazine | [Molecular Formula]
C30H17BN2S2 | [MOL File]
2250280-17-0.mol | [Molecular Weight]
480.41 |
| Hazard Information | Back Directory | [Description]
2PTZBN is a multi-resonance thermally activated delayed fluorescence (MR-TADF) green emitter featuring a DABNA-1 triarylboron core. Two heavy sulfur atoms are incorporated opposite the nitrogen atoms to bridge the peripheral phenyl rings, resulting in a more rigid molecular structure. By incorporating non-metal sulfur atoms into the multi-resonance B–N framework, 2PTZBN can accelerate the reverse intersystem crossing (RISC) rate to up to 2.8 × 10^5 s⁻¹ in toluene, owing to its larger spin–orbit coupling (SOC) and smaller singlet–triplet energy splitting (ΔE_ST), compared with the oxygen-incorporated green MR-TADF emitter 2PXZBN (PXZ-BN). | [References]
[1] Hua, Tao, et al. “Heavy-Atom Effect Promotes Multi-Resonance Thermally Activated Delayed Fluorescence.” Chemical Engineering Journal, 426 1, 2021, p. 131169, https://doi.org/10.26434/chemrxiv.14046296.v1.
[2] Khyasudeen*, M. Faisal, et al. “Insights into High-Level Reverse Intersystem Crossing in a Multiresonance Thermally Activated Delayed Fluorescent Compound.” The Journal of Physical Chemistry C, 129 36, 2025, pp. 16122–30, https://doi.org/10.1021/acs.jpcc.5c01675.
[3] Hu, Yu Xuan, et al. “Efficient Selenium-Integrated TADF OLEDs with Reduced Roll-Off.” Nature Photonics, 16 11, 2022, pp. 803–10, https://doi.org/10.1038/s41566-022-01083-y. |
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