期刊
ACS APPLIED ENERGY MATERIALS
卷 1, 期 2, 页码 649-654出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.7b00161
关键词
TADF emitter; two-component gel; self-assembly; TADF gel; aggregation induced emission
资金
- Marie Sklodowska-Curie Individual Fellowship (MCIF) [749557]
- Leverhulme Trust [RPG-2016-047]
- EPSRC [EP/P010482/1]
- EPSRC [EP/P010482/1] Funding Source: UKRI
- Marie Curie Actions (MSCA) [749557] Funding Source: Marie Curie Actions (MSCA)
Luminescent materials that can spontaneously assemble into highly ordered networks are essential to improve the quality of thin films in stacked device architectures and enhance the performances of solution-processed organic light emitting devices (OLEDs). Herein, we report two pyridine-decorated thermally activated delayed fluorescence (TADF) emitters, 3PyCzBP and 4PyCzBP. 4PyCzBP shows robust two-component gel formation in the presence of either tartaric acid or succinic acid along with significant emission enhancement. Morphology studies reveal that these gels consist of homogeneous nanofibers assembled in hierarchical supramolecular networks. Transient photoluminescence spectra confirm that the gels emit via a TADF mechanism, making them the first examples of TADF gels. These nanofibers are promising candidates as self-assembled emitting nanofibers in thin films in solution-processed OLEDs.
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