T2T
2,4,6-tris(biphenyl-3-yl)-1,3,5-triazine (T2T) is a family member of triazine. It has one electron-withdrawing triazine core and three electron-rich biphenyl groups. It has been widely used as a host material for phosphorescent OLEDs and electron transport layer material (ETL) for TADF-OLEDs.
Due to its electron-deficient nature, T2T and its derivatives are also used as acceptor materials to form exciplexes in blue-emission TADF devices.
General Information
| CAS number | 1201800-83-0 |
| Chemical formula | C39H27N3 |
| Molecular weight | 537.65 g/mol |
| Absorption | λmax 270 nm in DCM |
| Fluorescene | λem 380 nm in DCM |
| HOMO/LUMO | HOMO = 6.5 eV, LUMO = 3.0 eV; T1 = 2.80 eV [1] |
| Synonyms | 2,4,6-tris(biphenyl-3-yl)-1,3,5-triazine |
| Classification / Family | Triazine, TADF blue emitter materials, TADF host materials, Phosphorescent organic light-emitting devices (PHOLEDs), Sublimed materials |
Product Details
| Purity | Sublimed >99.0% (HPLC) |
| Melting point | TGA: >300 °C (0.5% weight loss) |
| Appearance | Off-white 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
Device Structure(s)
| Device structure | ITO/PEDOT:PSS/a-NPD (20 nm)/TCTA (5 nm)/(PPy)2Ir(acac):T2T (25 nm)/TPBi (50 nm)/LiF (0.5 nm)/Al (100 nm) [2] |
| Colour | Green 
|
| Max. EQE | 17.5% |
| Max. Power Efficiency | 65.2 Im/W |
| Device structure | ITO/MoO3 (3 nm)/TAPC (25 nm)/TAPC:T2T (15 nm)/T2T (5 nm)/Bphen (30 nm)/LiF (1 nm)/Al (100 nm) [3] |
| Colour | Green
|
| Max. Current Efficiency | 40.4 cd/A |
| Max. EQE | 11.6% |
| Max. Power Efficiency | 42.2 Im/W |
| Device structure | ITO/TAPC (35 nm)/1 wt%-TBRb:25 wt%-PXZ-TRX:mCBP (30 nm)/T2T (10 nm)/Alq3 (55 nm)/LiF (0.8 nm)/Al (100 nm) [4] |
| Colour | Yellow 
|
| Max. Current Efficiency | 60 cd/A |
| Max. EQE | 18.0% |
| Max. Power Efficiency | 58 Im/W |
| Device structure | ITO (100 nm)/HAT-CN (10 nm)/TAPC (30 nm)/0.65mol%-TBRb:6.3mol%-4CzIPN-Me:mCBP (30 nm)/T2T (10 nm)/Alq3 (55 nm)/LiF (0.8 nm)/Al (100 nm) [5] |
| Colour | Green
|
| Max. Current Efficiency | 73 cd/A |
| Max. EQE | 21% |
Pricing
| Grade | Order Code | Quantity | Price |
| Sublimed (>99.0% purity) | M2103A1 | 250 mg | £249.00 |
| Sublimed (>99.0% purity) | M2103A1 | 500 mg | £423.00 |
| Sublimed (>99.0% purity) | M2103A1 | 1 g | £738.00 |
MSDS Documentation
T2T MSDS sheetLiterature and Reviews
- Operational stability enhancement in organic light-emitting diodes with ultrathin Liq interlayers, D. Tsang et al., Sci. Rep., 6:22463 (2016); DOI: 10.1038/srep22463.
- 1,3,5-Triazine derivatives as new electron transport–type host materials forhighly efficient green phosphorescent OLEDs, H-F. Chen et al., J. Mater. Chem., 19, 8112–8118 (2009); DOI: 10.1039/b913423a.
- Thermally activated delayed-fluorescence organic light-emitting diodes based on exciplex emitter with high efficiency and low roll-off, T. Lin et al., Org. Electronics, 38, 69-73 (2016); DIO: 10.1016/j.orgel.2016.08.001.
- High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. Commun., 5:4016 (2014); DOI: 10.1038/ncomms5016.
- Dual enhancement of electroluminescence efficiency and operational stability by rapid upconversion of triplet excitons in OLEDs, T. Furukawa1 et al., Sci. Rep., 5:8429 (2015) DOI: 10.1038/srep08429.
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.