2-TNATA

Order Code: M612
MSDS sheet

Price

(excluding Taxes)

£109.30


Pricing

 Grade Order Code Quantity Price
Sublimed (>99.6% purity) M611 500 mg £126.5
Unsublimed (>99.5% purity) M612 1 g £109.3
Sublimed (>99.6% purity) M611 1 g £199.8
Unsublimed (>99.5% purity) M612 5 g £376.7

General Information

CAS number 185690-41-9
Chemical formula C66H48N4
Molecular weight 897.11 g/mol
Absorption λmax 326 nm (THF)
Fluorescence λem 490 nm (THF)
HOMO/LUMO HOMO = 5.1 eV, LUMO = 2.2 eV
Synonyms
  • 2-TNATA
  • 2TNATA
  • 2T-NATA
  • 4,4′,4′′-Tris[2-naphthyl(phenyl)amino] triphenylamine
Classification / Family Triphenylamine derivatives, Hole-injection materials, Hole-transporting materials, Light-emitting diodes

 

Product Details

Purity

>99.6% (sublimed) 

>99.5% (unsublimed)
Melting point 246-248 °C (lit.)
Colour Pale yellow to 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.

 

Chemical Structure

chemical structure of 2-tnata
Chemical Structure of 2-TNATA; CAS No. 185690-41-9; Chemical formula C66H48N4.

 

Applications

4,4',4''-Tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA), a starburst type molecule, gives very homogeneous thin-films that are ideal as hole-injection layers due to its low ionisation potential (of around 5.1 eV [1]) .

It has been demonstrated that p-i-n organic light-emitting diodes (OLEDs) incorporating a p-doped transport layer that comprises tungsten oxide (WO3) and 2-TNATA significantly improves hole injection and conductivity of the Alqbased p-i-n OLEDs with long lifetime, low driving voltage (3.1 V), and high power efficiency (3.5 lm/W) at 100 cd/m[2].

 

Device structure                                            ITO/2-TNATA:33% WO3 (100 nm)/NPB (10 nm)/Alq3 (30 nm)/Bphen (20 nm)/BPhen: 2% Cs (10 nm)/Al (150 nm) [2]
Colour Green  green
Operating Voltage for 100 cd/m2 3.1 V
Current Efficiency for 20 mA/cm2 4.4 cd/A
Power Efficiency for 20 mA/cm2 3.3 lm W1
Device structure                      ITO/2-TNATA (60 nm)/NPB (15 nm)/TAT* (30 nm)/ Alq3 (30 nm)/LiF (1 nm)/Al (200 nm) [4]   
Colour Deep Blue  dellp blue
EQE at 10 mA/cm2          7.18
Current Efficiency at 10 mA/cm2 3.64 cd/A
Power Efficiency at 10 mA/cm2 1.87 lm W1
Device structure

ITO/2T-NATA (17 nm)/TPAHQZn* (25 nm)/NPBX* (15 nm)/BCP (8 nm)/

Alq3 (35 nm)/LiF (0.5 nm)/Al (120 nm) [6]

Colour White  white
Max. EQE                           17.5%
Max. Luminance 12,930 cd/m(12 V) 
Max. Current Efficiency 2.66 cd/A (10 V)
Device structure                                       ITO/2T-NATA (20 nm)/NPB (60 nm)/Zn(BTZ)2:Ir(DBQ)2(acac) (80 nm)/Alq3 (70 nm)/LiF (1nm)/Al (200 nm) [7]
Colour                                  Red  red
Max. Luminance 25,000 cd/m2
Max. Current Efficiency 12 cd/A
Device structure glass/Ag (100 nm)/ITO (90 nm)/2-TNATA (60 nm)/NPB (15 nm)/ DPVBi:DCJTB (1.2%, 30 nm)/Alq3 (20 nm)/Li (1.0 nm)/Al (2.0 nm)/Ag (20 nm)/ITO(63 nm)/SiO2 (42 nm) [8]
Colour White  white
Max. Luminance  14,500 cd/m2
Max. Power Efficiency  1.4 lm W1
Device structure

glass/ITO (150 nm)/2-TNATA (60 nm)/NPB (15 nm)/DPVBi:DCJTB (20 nm, 0.08%)/Alq3 (35 nm)/Li (1.0 nm)/Al (100 nm) [9]

Colour White  white
Max. EQE 2.47%
Max. Luminance  64,200 cd/m2
Max. Power Efficiency  4.27 lm W1
Device structure ITO (150 nm)/2T-NATA (25 nm)/NPB (5 nm) ITCTA (10 nm)/GD* 10 wt% doped GH* (20 nm)/ TPBi (30 nm)/ LiF (0.5 nm)/ AI (l00 nm) [10]
Colour Green  green
Current Efficiency for 20 mA/cm2 62.6 cd/A
Power Efficiency for 20 mA/cm2 61.4 lm W1

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

Characterisation 

hplc 2-tnata

HPLC trace of 4,4′,4′′-Tris[2-naphthyl(phenyl)amino]triphenylamine (2-TNATA), sublimed.

Literature and Reviews

  1. Exciplex formation at the organic solid/solid interface and tuning of the emission color in organic electroluminescent devices, K. Okumoto et al., , J. Lumin. 87–89, 1171 (2000). doi:10.1016/S0022-2313(99)00584-0.
  2. Highly Power Efficient Organic Light-Emitting Diodes with a p-Doping Layer, C-C. Chang et al., Appl. Phys. Lett., 89, 253504 (2006); doi: 10.1063/1.2405856.
  3. Pure White Organic Light-Emitting Diode with Lifetime Approaching the Longevity of Yellow Emitter, J-H. Jou et al., ACS Appl. Mater. Interfaces, 3, 3134–3139 (2011). dx.doi.org/10.1021/am2006383.
  4. Exceedingly efficient deep-blue electroluminescence from new anthracenes obtained using rational molecular design, S-K. Kim et al., J. Mater. Chem., 18, 3376–3384 (2008). DOI: 10.1039/B805062G.
  5. Control of the Color Coordinates of Blue Phosphorescent Organic Light-Emitting Diodes by Emission Zone, S. H. Rhee et al., ECS Solid State Letters, 3 (3) R7-R10 (2014). DOI: 10.1149/2.003403ssl.
  6. White organic light-emitting devices based on novel (E)-2-(4-(diphenylamino) styryl)quinolato zinc as a hole- transporting emitter, G. Ding et al., Semicond. Sci. Technol. 24, 025016 (2009). stacks.iop.org/SST/24/025016.
  7. Effect of A Series of Host Material on Optoelectronic Performance of Red Phosphorescent OLED, H. Li et al., Chin. J. Luminance, 5, 585-589, 2009.
  8. White top-emitting organic light-emitting diodes using one-emissive layer of the DCJTB doped DPVBi layer, M. Kim et al., Thin Solid Films 516, 3590–3594 (2008); doi:10.1016/j.tsf.2007.08.078.
  9. High Efficiency White Organic Light-Emitting Diodes from One Emissive Layer, C. Jeong et al., Jpn. J. Appl. Phys., 46 (2), 806-809 (2007); http://iopscience.iop.org/1347-4065/46/2R/806.
  10. High-Efficiency Green Phosphorescent Organic Light-Emitting Devices, L. Li et al., ICEOE, V4-96-97 (2011); DIO:10.1109/ICEOE.2011.6013434