FATPA, host material for green PhOLED devices
Exhibits excellent thermal and morphological stability
FATPA, namely 4,4,8,8,12,12-Hexa-p-tolyl-4H-8H-12H-12C-aza-dibenzo[cd,mn]pyrene, is a fully diarylmethylene-bridged triphenylamine (TPA) derivative with six methylphenyl side arms. FATPA has an almost planar triphenylamine core with nitrogen sitting right in the centre of carbon and hydrogen structure. With a Tg of 178 °C, FATPA exhibits excellent thermal and morphological stability.
Green phosphorescent OLED device with the novel FATPA as host material and Ir(ppy)3 as triplet emitter shows a maximum current efficiency of 83.5 cd/A and a maximum power efficiency of 71.4 lm/W 
|Molecular weight||822.09 g/mol|
|Absorption||λmax 311 nm (Toluene)|
|Photoluminescence||λem 375 nm (Toluene)|
|HOMO/LUMO||HOMO = 5.22 eV, LUMO = 1.62 eV; ET = 2.78 eV |
|Classification / Family||Triphenylamine derivatives, Phosphorescent host materials, Sublimed materials, Semiconducting small molecules|
|Purity||Sublimed >99.0% (HPLC)|
|Melting point||Tg = 178°C (lit.)|
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the sublimed materials for OLED devices page.
|Device structure||ITO/MoO3 (10 nm)/NPB (80 nm)/mCP (5 nm)/FATPA:Ir(ppy)3 (20 nm)/TAZ (40 nm)/LiF (1 nm)/Al (100 nm) |
|Max. Current Efficiency||83.5 cd/A|
|Max. Power Efficiency||71.4 Im/W|
|Sublimed (>99.0% purity)||M2290A1||100 mg||£200|
|Sublimed (>99.0% purity)||M2290A1||250 mg||£400|
|Sublimed (>99.0% purity)||M2290A1||500 mg||£700|
|Sublimed (>99.0% purity)||M2290A1||1 g||£1200|
Literature and Reviews
- A Fully Diarylmethylene-Bridged Triphenylamine Derivative as Novel Host for Highly Efficient Green Phosphorescent OLEDs, Z. Jiang et al., Org. Lett., 11(7), 1503-6 (2009);DOI:10.1021/ol9001152.
- Functionalization of phosphorescent emitters and their host materials by main-group elements for phosphorescent organic light-emitting devices, X. Yang et al., Chem. Soc. Rev., 44, 8484-8575 (2015); DOI: 10.1039/C5CS00424A.
- Solution-Processed Undoped Deep-Blue Organic Light-Emitting Diodes Based on Starburst Oligofluorenes with a Planar Triphenylamine Core, C. Liu et al., Chem. Eur. J. 18 (22), 6928-6934 (2012); DOI: 10.1002/chem.201200062.
- Leakage-free solution-processed organic lightemitting diode using a ternary host with single-diode emission area up to 6 × 11.5 cm2, S-Y. Liao et al., RSC Adv., 9, 10584 (2019); DOI: 10.1039/c8ra10363.
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