TAPC

1,1-Bis[(di-4-tolylamino)phenyl]cyclohexane, known as TAPC, has been widely used as a hole transport material in organic light-emitting diodes (OLEDs) due to its high hole mobility.
Having a higher ET (2.87 eV) than the typical blue phosphorescent guest material, TAPC can be used as both hole-transport layer material and as host for blue phosphorescent (such as FIrpic) guest molecules, resulting in a reduction of the number of organic layers and simplified OLED structures.
General Information
CAS number | 58473-78-2 |
Chemical formula | C46H46N2 |
Molecular weight | 626.87 g/mol |
Absorption | λmax 305 nm (in THF) |
Fluorescence | λem 414 nm (in THF) |
HOMO/LUMO | HOMO = 5.5 eV, LUMO = 2.0 eV |
Synonyms |
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Classification / Family | Triphenylamine derivatives, Hole-injection layer (HIL) materials, Hole transport layer (HTL) materials, Electron blocking layer (EIL) materials, Phosphorescent host materials, Thermally-activated delayed fluorescence (TADF) materials, Organic light-emitting diodes (OLEDs), Organic electronics |
Product Details
Purity |
>99.5% (sublimed*) >98.0% (unsublimed) |
Melting point | 186 °C (lit.) |
Appearance | White powder/crystals |
*For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.
Chemical Structure

Device Structure(s)
Device structure | ITO(50 nm)/PEDOT:PSS(60 nm)/TAPC(20 nm)/mCP(10 nm)/mCP:BmPyPb*:4CzIPN(25 nm)/TSPO1(35 nm)/LiF(1 nm)/Al(200 nm) [1] |
Colour | Green ![]() |
Max. EQE | 28.6% |
Max. Power Efficiency | 56.6 lm W−1 |
Device structure | ITO/TAPC (40 nm)/TCTA (2 nm)/26DCzPPy:TCTA:FIrpic (0.4:0.4:0.2) (5 nm)/26DCzPPy:PPT:FIrpic (0.4:0.4:0.2) (5 nm)/3TPYMB (55 nm)/CsF (2 nm)/Al (180 nm) [2] |
Colour | Blue ![]() |
Current Efficiency @ 1000 cd/m2 | 42 cd/A |
Power Efficiency @ 1000 cd/m2 | 30 lm W−1 |
Device structure |
ITO/TAPC:MoOx (10 nm, 15 wt.%)/TAPC(35 nm)/TcTa:Ir(BT)2(acac) (5 nm, 4 wt.%)/26DCzPPy:FIrpic (5 nm, 15 wt.%)/26DCzPPy:Ir(BT)2(acac) (5 nm, 4 wt.%)/BPhen (40 nm)/Cs2CO3 (1 nm)/Al (100 nm) [3] |
Colour | White ![]() |
Max. EQE | 13.2% |
Max. Current Efficiency | 35.0 cd/A |
Max. Power Efficiency | 30.6 lm W−1 |
Device structure |
Si/SiO2/Al (80 nm)/MoOx: TAPC (43 nm, 15 wt.%)/TAPC (10 nm)/Ir(piq)3:TcTa (3 nm, 6%)/TcTa (2 nm)/FIrpic:26DCzPPy (5 nm, 12 wt.%)/BPhen (2 nm)/PO-01*:26DCzPPy (5 nm, 6 wt.%)/BPhen (40 nm)/Cs2CO3 (1 nm)/Al (2 nm)/Cu (18 nm)/TcTa (60 nm) [4] |
Colour | White ![]() |
EQE @ 1000 cd/m2 | 10% |
Current Efficiency @ 1000 cd/m2 | 25.6 cd/A |
Power Efficiency @ 1000 cd/m2 | 20.1 lm W−1 |
Device structure | ITO (90 nm)/HATCN (5 nm)/TAPC (65 nm)/10 wt% fac -Ir(mpim)3 –doped TCTA (5 nm)/10 wt% fac -Ir(mpim)3 -doped 26DCzPPy (5 nm)/B3PyPB* (65 nm)/Liq (2 nm)/Al (80 nm) [5] |
Colour | Blue ![]() |
EQE @ 100 cd/m2 | 29.6% |
Current Efficiency @ 100 cd/m2 | 73.2 cd/A |
Power Efficiency @ 100 cd/m2 | 75.6 lm W−1 |
Device structure | ITO/TAPC (40 nm)/TcTa (10 nm)/5a* (4%):TcTa (5 nm)/5a* (4%):26DCzPPy (10 nm)/TmPyPB (40 nm)/LiF(1 nm)/Al(100 nm) [6] |
Colour | Red ![]() |
Max. Luminance | 11,023 cd/m2 |
Max. Current Efficiency | 17.36 cd/A |
Max. Power Efficiency | 14.73 lm W−1 |
Device structure | ITO /TAPC/(1wt% DPB:99wt%tri-PXZ-TRZ*):CBP (15:85)/LiF/Al [7] |
Colour | Red ![]() |
Max EQE | 17.5% |
Max. Power Efficiency | 28 lm W−1 |
Device structure | ITO (180 nm)/TAPC (60 nm)/mCP:Firpic–8 wt% (10 nm)/Ir(ppz)3 (1.5 nm)/mCP:Firpic–8 wt% (10 nm)/Ir(ppz)3 (1.5 nm)/mCP:Firpic–8 wt% (10 nm)/TPBi (30 nm)/Liq (2 nm)/Al (120 nm) [8] |
Colour | Blue ![]() |
Luminance @ 200 cd/m2 | 32,570 cd/m2 |
Max. Current Efficiency | 43.76 cd/A |
Max. EQE | 23.4% |
Max. Power Efficiency | 21.4 lm W−1 |
Device structure | ITO/TAPC (50 nm)/TcTa:FIrpic (7%,10 nm)/26DCzPPy:FIrpic (20%, 10 nm)/Tm3PyPB (20 nm)/Tm3PyPB:Cs (30 nm)/LiF (1 nm)/Al (120 nm) [9] |
Colour | Blue ![]() |
Max. EQE | 20.3% |
Max. Power Efficiency | 36.7 lm W−1 |
Device structure | ITO/MoO3 (8 nm)/(NPB)(80 nm)/TAPC(5 nm)/TCTA:4 wt% Ir(MDQ)2(acac) (4 nm)/TCTA:2 wt% Ir(ppy)3 (4 nm)/43 wt% TCTA: 43 wt% 26DCzPPy: 14 wt% FIrpic (5 nm)/TmPyPb (40 nm)/LiF/Al [10] |
Colour | White ![]() |
Max. EQE | 19.4% |
Max. Current Efficiency | 43.6 cd/A |
Max. Power Efficiency | 45.8 lm W−1 |
Device structure | ITO/PEDOT:PSS(40 nm)/TCTA:TAPC:FIrpic:Ir(ppy)3:Ir(MDQ)2(acac) (40nm)/TmPyPB (50 nm)/LiF (1 nm)/Al [11] |
Colour | White ![]() |
Max. Current Efficiency | 37.1 cd/A |
Max. Power Efficiency | 32.1 lm W−1 |
Device structure | ITO/HAT-CN (10 nm)/HAT-CN:TAPc (2:1, 60 nm)/TAPc (20 nm)/TcTa:Be(pp)2:Ir(mppy)3 (1:1:8 wt% 10 nm)/Be(pp)2:Liq (1:10%, 35 nm)/Liq (1 nm)/Al (1 nm)/HAT-CN (20 nm)/HAT-CN:TAPc (2:1, 10 nm)/TAPc (40 nm)/ TcTa:Be(pp)2:Ir(mppy)3 (1:1:8 wt% 10 nm)/Be(pp)2 (15 nm)/Be(pp)2:Liq (1:10%, 35 nm)/Liq (1 nm)/Al (100 nm) [12] |
Colour | Green ![]() |
Max. Current Efficiency | 241 cd/A |
Max. Power Efficiency | 143 lm W−1 |
Device structure | ITO/HAT-CN (10 nm)/TAPC (45 nm)/BCzSCN*:FIrpic:PO-01 (8 wt%, 0.5 wt%, 20 nm)/TmPyPB (50 nm)/Liq (2 nm)/Al (120 nm) [13] |
Colour | Blue ![]() |
Max. EQE | 22% |
Max. Current Efficiency | 66.0 cd/A |
Max. Power Efficiency | 64.0 lm W−1 |
Device structure | ITO/HAT-CN (10 nm)/TAPC (45 nm)/mCP:Ir(dbi)3 10 wt% (20 nm)/TmPyPB (40 nm)/Liq (2 nm)/Al (120 nm) [14] |
Colour | Sky Blue ![]() |
Max. EQE | 23.1% |
Max. Current Efficiency | 61.5 cd/A |
Max. Power Efficiency | 43.7 lm W−1 |
Device structure | Graphene (2–3 nm)/TAPC (30 nm)/HAT-CN (10 nm)/TAPC (30 nm)/HAT-CN (10 nm)/TAPC (30 nm)/ TCTA:FIrpic (5 nm)/DCzPPy: FIrpic (5 nm)/BmPyPB (40 nm)/LiF (1 nm)/Al (100 nm) [15] |
Colour | Blue ![]() |
Max. EQE | 15.1% |
Max. Power Efficiency | 14.5 lm W−1 |
Device structure | ITO/TAPC (40 nm)/TCTA:Ir(piq)3 2 wt % (1 nm)/TCTA 46 wt %:BP4mPy 46 wt %: FIrpic 8 wt % (28 nm)/BP4mPy:Ir(piq)3 3 wt % (1 nm)/BP4mPy (40 nm)/LiF (0.8 nm)/Al (150 nm) [16] |
Colour | White ![]() |
Max. Luminance | 19,007 cd/m2 |
Max EQE | 11.3% |
Max. Current Efficiency | 15.6 cd/A |
Max. Power Efficiency | 16.3 lm W−1 |
*For chemical structure information please refer to the cited references
Pricing
Grade | Order Code | Quantity | Price |
Sublimed (>99.5%) | M811 | 500 mg | £230.00 |
Unsublimed (>98.0%) | M812 | 1 g | £227.00 |
Sublimed (>99.5%) | M811 | 1 g | £368.00 |
MSDS Documentation
Literature and Reviews
- Engineering of Mixed Host for High External Quantum Efficiency above 25% in Green Thermally Activated Delayed Fluorescence Device, B. Kim et al., Adv. Funct. Mater., 24, 3970–3977 (2014).
- Blue and white phosphorescent organic light emittingdiode performance improvementbyconfining electrons and holes inside double emitting layers, Y-S.Tsai et al., J. Luminescence 153, 312–316 (2014); http://dx.doi.org/10.1016/j.jlumin.2014.03.040.
- Color stable and low driving voltage white organic light-emitting diodes with low efficiency roll-off achieved by selective hole transport buffer layers, Z. Zhang et al., Org. Electronics 13, 2296–2300 (2012); http://dx.doi.org/10.1016/j.orgel.2012.07.001.
- High performance top-emitting and transparent white organic light-emitting diodes based on Al/Cu/TcTa transparent electrodes for active matrix displays and lighting applications, Z. Zhang et al., Org. Electronics,14, 1452–1457 (2013); http://dx.doi.org/10.1016/j.orgel.2013.03.007.
- Low-Driving-Voltage Blue Phosphorescent Organic Light-Emitting Devices with External Quantum Efficiency of 30%, K. Udagawa et al., Adv. Mater., 26, 5062–5066 (2014); DOI: 10.1002/adma.201401621.
- Efficient red organic electroluminescent devices by doping platinum(II) Schiff base emitter into two host materials with stepwise energy levels, L. Zhou et al., Opt. Lett., 38 (14), 2373-2375 (2013); http://dx.doi.org/10.1364/OL.38.002373.
- High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. Commun., 5, 4016, DOI: 10.1038/ncomms5016.
- Luminous efficiency enhancement in blue phosphorescent organic light-emitting diodes with an electron confinement layers, J-S. Kang et al., Optical Materials 47, 78–82 (2015); doi:10.1016/j.optmat.2015.07.003.
- Dependence of Light-Emitting Characteristics of Blue Phosphorescent Organic Light-Emitting Diodes on Electron Injection and Transport Materials, Jeong-Ik Lee et al. ETRI J., 34 (5), 690-695 (2012).
- High-Efficiency Phosphorescent White Organic Light-Emitting Diodes with Stable Emission Spectrum Based on RGB Separately Monochromatic Emission Layers, Q. Zhang et al., Chin. Phys. Lett., 31 (4) 046801 (2014).
- Solution-Processed Small Molecules As Mixed Host for Highly Efficient Blue and White Phosphorescent Organic Light-Emitting Diodes, Q Fu. et al., ACS Appl. Mater. Interfaces, 4, 6579−6586 (2012); dx.doi.org/10.1021/am301703a.
- Highly efficient and stable tandem organic light-emitting devices based on HAT-CN/HAT-CN:TAPC/TAPC as a charge generation layer, Y. Dai et al., J. Mater. Chem. C, 3, 6809-6814 (2015);DOI: 10.1039/C4TC02875A.
- Bipolar host materials for high efficiency phosphorescent organic light emitting diodes: tuning the HOMO/LUMO levels without reducing the triplet energy in a linear system, L. Cui et al., J. Mater. Chem. C, 1, 8177-8185 (2013); DOI: 10.1039/C3TC31675K.
- Highly efficient phosphorescent organic light-emitting diodes using a homoleptic iridium(III) complex as a sky-blue dopant, J. Zhuang et al., Org. Electronics 14, 2596–2601 (2013); http://dx.doi.org/10.1016/j.orgel.2013.06.029.
- Multilayered graphene anode for blue phosphorescent organic light emitting diodes, J. Hwang et al., Appl. Phys. Lett. 100, 133304 (2012); http://dx.doi.org/10.1063/1.3697639.
- Efficient red, green, blue and white organic light-emitting diodes with same exciplex host, C-H. Chang et al., Jpn. J. Appl. Phys. 55, 03CD02 (2016); http://doi.org/10.7567/JJAP.55.03CD02.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.