Citation: Hong-Cheng Li, Xun Tang, Sheng-Yi Yang, Yang-Kun Qu, Zuo-Quan Jiang, Liang-Sheng Liao. Spatial donor/acceptor architecture for intramolecular charge-transfer emitter[J]. Chinese Chemical Letters, ;2021, 32(3): 1245-1248. doi: 10.1016/j.cclet.2020.08.045 shu

Spatial donor/acceptor architecture for intramolecular charge-transfer emitter

a.
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
b.
Institute of Organic Optoelectronics, Jiangsu Industrial Technology Research Institute (JITRI), Suzhou 215211, China

zqjiang@suda.edu.cn

Received Date: 12 June 2020
Revised Date: 11 August 2020
Accepted Date: 26 August 2020
Available Online: 29 August 2020

Figures(4)

Charge transfer via electron hopping from an electron donor (D) to an acceptor (A) in nanoscale, plays a crucial role in optoelectronic materials, such as organic light-emitting diodes (OLEDs) and organic photovoltaic cells (OPVs). Here, we propose a strategy for binding D/A units in space, where intramolecular charge-transfer can take place. The resulted material DM-Me-B is able to give bright emission in this molecular architecture because of the good control of D/A interaction and conformational rigidity. Moreover, DM-Me-B presents small singlet-triplet splitting energy, enabling thermally activated delayed fluorescence. Therefore, the DM-Me-B exhibits ~20% maximum external quantum efficiency and low efficiency roll-off at 1000cd/m², certifying an effective strategy in controlling D/A blocks through space.
- Thermally activated delayed fluorescence,
- Donor/acceptor,
- Organic light-emitting,
- Efficiency roll-off,
- Triazine
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沈阳化工大学材料科学与工程学院沈阳 110142