TXO-TPA
CAS Number 1623010-63-8
Dopant Materials, High Purity Sublimed Materials, Materials, OLED Materials, Semiconducting Molecules, TADF Materials
TXO-TPA, red dopant material in TADF-OLED devices
High-purity (>99.0%) and available online for priority dispatch, sublimed grade, CAS 1623010-63-8
TXO-TPA has an ambipolar D-A type structure with TXO as the electron-accepting and triphenylamine (TPA) as the electron-donating unit. The twice-oxidised thiophene on TXO moiety can greatly enhance the electron-accepting ability as the channel for higher electron mobility. On the other hand, electron-rich TPA is used as the channel for higher hole mobility.
TXO-TPA is commonly used as a red dopant material in TADF-OLED devices. This is due to its high device performance capabilities with high external quantum efficiency (EQE).
General Information
| CAS number | 1623010-63-8 |
|---|---|
| Full name | 2-[4-(diphenylamino)phenyl]-10,10-dioxide-9H-thioxanthen-9-one |
| Chemical formula | C31H21NO3S |
| Molecular weight | 487.57 g/mol |
| Absorption | λmax 310, 375 nm in film |
| Fluorescence | λem 625 nm in film |
| HOMO/LUMO | HOMO 5.37 eV, LUMO 3.49 eV [1] |
| Synonyms | 9-H-Thioxanthen-9-one-10,10-dioxide-triphenylamine |
| Classification / Family | Thioxanthone derivatives, Organic electronics, TADF-OLEDs, TADF red dopant materials, Sublimed materials. |
Product Details
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | TGA: >250 °C (0.5% weight loss) |
| Appearance | Orange powder/crystals |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials.
Chemical Structure
Device Structure(s)
| Device structure | ITO/PEDOT (30 nm)/TAPC (20 nm)/5 wt%TXO-TPA:mCP (35 nm) /TmPyPB (55 nm)/LiF(0.9 nm)/Al [1] |
|---|---|
| Colour | Yellow 
|
| Current Efficiency@100 cd/m2 | 43.3 cd/A |
| EQE@100 cd/m2 | 18.5 % |
| Power Efficiency@100 cd/m2 | 47.4 lm W-1 |
| Device structure | ITO/PEDOT (20 nm)/TAPC (30 nm)/TXO-TPA (0.5 nm)/4P-NPB* (0.5 nm)/mCP (10 nm)/TmPyPB (50 nm)/LiF (0.9 nm)/Al (100 nm) [2] |
|---|---|
| Colour | White 
|
| Max. Current Efficiency | 10.5 cd/A |
| Max. EQE | 4.4% |
| Max. Power Efficiency | 8.9 lm W-1 |
*For chemical structure information, please refer to the cited references
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99% purity) | M2128A1 | 100 mg | £260 |
| Sublimed (>99% purity) | M2128A1 | 250 mg | £520 |
| Sublimed (>99% purity) | M2128A1 | 500 mg | £900 |
| Sublimed (>99% purity) | M2128A1 | 1 g | £1450 |
Literature and Reviews
- Novel Thermally Activated Delayed Fluorescence Materials–Thioxanthone Derivatives and Their Applications for Highly Efficient OLEDs, H. Wang et al., Adv. Mater., 26, 5198–5204 (2014); DOI: 10.1002/adma.201401393.
- White organic light emitting diodes based on a yellow thermally activated delayed fluorescent emitter and blue fluorescent emitter, L. Meng et al., RSC Adv., 5, 59137-59141 (2015); DOI: 10.1039/C5RA09168C.
- Purely Organic Thermally Activated Delayed Fluorescence Materials for Organic Light‐Emitting Diodes, M. Wong et al., Adv.Mater., 29, 1605444 (2017); DOI: 10.1002/adma.201605444.