Order Code: M2129A1
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General Information

CAS number 177799-16-5
Full name 9,10-Bis[N,N-di-(p-tolyl)-amino]anthracene
Chemical formula C42H36N2
Molecular weight 568.75 g/mol
Absorption λmax 294, 471 nm in DCM
Fluorescene λem 554 nm in DCM
HOMO/LUMO HOMO = 5.5 eV, LUMO = 3.1 eV [1]
Synonyms TTP1; ATTP
Classification / Family Triarylamine derivatives, Organic electronics, Hole transport layer materials (HTL), Electron-blocking layer materials (EBL), TADF green dopant materials, TADF-OLEDs, Sublimed materials.

Product Details

Purity Sublimed: 99.22% (HPLC)
Melting point TGA: >280 °C (0.5% weight loss)
Appearance Yellow powder/crystals

*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.


ttpa chemical structure
Chemical structure of TTPA; CAS No. 177799-16-5.



9,10-Bis[N,N-di-(p-tolyl)-amino]anthracene, TTPA, is commonly used as a green dopant material in TADF-OLED devices.

Bearing two triarylamine units, TTPA is also electron-rich in nature. It can be used as a hole-transporting material for OLED, OPV and perovskite solar cell applications.


Device structure ITO/α-NPD (30 nm)/DPEPO (10 nm)/TPBi (40 nm)/1 wt% DBP:10 wt% TTPA:mCP (8 nm)/mCP (2 nm)/DMAC-DPS (7.5 nm)/LiF (0.5 nm)/Al (100 nm) [1]
Colour White white
Max. EQE 12.1%
Max. Power Efficiency 22 Im/W
Device structure ITO/TAPC (35 nm)/1 wt%-TTPA:50 wt%-ACRXTN:mCP (15 nm)/TPBi (65 nm)/LiF (0.8 nm)/Al (100 nm) [2]
Colour Green  green
Max Current Efficiency 45 cd/A 
Max EQE 15.8%
Max. Power Efficiency 47 lm W-1
Device structure ITO/MoO3 (2 nm)/TAPC (40 nm)/TCTA (10 nm)/CzSi (3 nm)/CzSi:Pd-B-1* (10%):TTPA (1%) (20 nm)/TSPO1 (10 nm)/TmPyPb (40 nm)/LiF (1.2 nm)/Al (150 nm) [3]
Colour Green  green
Max Current Efficiency 38.85 cd/A 
Max EQE 10.41%
Max. Power Efficiency 38.14 lm W-1

*For chemical structure information, please refer to the cited references.


Literature and Reviews

  1. High-Efficiency White Organic Light-Emitting Diodes Based on a Blue Thermally Activated Delayed Fluorescent Emitter Combined with Green and Red Fluorescent Emitters, T. Higuchi et al., Adv. Mater., 27, 2019–2023 (2015); DOI: 10.1002/adma.201404967.
  2. High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. commun., 5:4016 (2014); DOI: 10.1038/ncomms5016
  3. Highly luminescent palladium(II) complexes with sub-millisecond blue to green phosphorescent excited states. Photocatalysis and highly efficient PSF-OLEDs, P-K. Chow et al., Chem. Sci., 7, 6083-6098 (2016); DOI: 10.1039/C6SC00462H.
  4. Wide-Range Tuning and Enhancement of Organic Long-Persistent Luminescence Using Emitter Dopants, K. Jinnai et al., adv. Mater., 30, 1800365 (2018); DOI: 10.1002/adma.201800365.