DPAVBi
CAS Number 119586-44-6
Dopant Materials, High Purity Sublimed Materials, Materials, Semiconducting Molecules
DPAVBi, HTL material in organic electronic devices
Sky-blue fluorescent emitter in OLED devices
DPAVBi, 4,4′ -Bis[4-(di-p-tolylamino)styryl]biphenyl is widely used as a sky-blue fluorescent emitter in OLED devices. It is also used as a blue dopant for white TADF-OLED devices.
Bearing two triarylamine end units, DPAVBi is electron-rich in nature. It has applications as a hole-transporting material in organic electronic devices.
General Information
| CAS number | 119586-44-6 |
|---|---|
| Full name | 4,4′-Bis[4-(di-p-tolylamino)styryl]biphenyl |
| Chemical formula | C56H48N2 |
| Molecular weight | 748.99 g/mol |
| Absorption* | λmax 405 nm in THF |
| Fluorescence | λmax 474 nm in THF |
| HOMO/LUMO | HOMO = 5.3 eV, LUMO = 2.6 eV [1] |
| Synonyms | 4,4'-[Biphenyl-4,4'-diyldi(E)ethene-2,1-diyl]bis[N,N-bis(4-methylphenyl)aniline] |
| Classification / Family | Triarylamines, Blue fluorescent emitter and dopant materials, OLED materials, Organic electronics, Sublimed materials. |
* Measurable with an USB spectrometer, see our spectrometer application notes.
Product Details
| Purity | Sublimed* > 99% (HPLC) |
|---|---|
| Melting point | > 300 °C (0.5% weight loss) |
| Appearance | Greenish-yellow crystals/powder |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials.
Chemical Structure
Device Structure(s)
| Device structure | ITO/HATCN (5 nm)/TAPC (40 nm)/2F-DPA*:DPAVBi (7%, 20 nm)/TPBi (40 nm)/LiF (1 nm)/Al (100 nm) [1] |
|---|---|
| Colour | Blue 
|
| Max. Power Efficiency | 7.7 lm W−1 |
| Max. Current Efficiency | 9.6 cd/A |
| Max. Luminance | 27,638 cd/m2 |
| Max. EQE | 5.2% |
| Device structure | ITO/m-MTDATA(15 nm)/a-NPD (40 nm)/PATSPA*:DPAVBi (1% wt%, 30 nm)/Alq3 (40 nm)/LiF/Al [2] |
|---|---|
| Colour | Blue
|
| Max. Current Efficiency | 7.5cd/A |
| Max. Luminance | 48,128 cd/m2 |
| Max. EQE | 6.3% |
| Device structure | PET/Graphene/GraHIL (50 nm)/NPB (20 nm)/NPB:TBADN:rubrene (1%) (10 nm)/NPB:TBADN:DPAVBi (5%) (10 nm)/TBADN:DPAVBi (5%) (15 nm)/Bebq2 (20 nm)/BaF2 (1 nm)/aluminium (130 nm) [3] |
|---|---|
| Colour | White 
|
| Max. Power Efficiency | 37.2 lm W−1 |
| Max. Current Efficiency | 30.2 cd/A |
| Device structure | ITO (95 nm)/ HATCN (10 nm)/ NPB (40 nm)/ TCTA (10 nm)/ 0.8 wt.% TBRb: 10wt.% 4CzPN: mCBP (12 nm)/ 30 wt.% Bepp2: mCBP (5 nm)/ Bepp2 (3 nm)/ 5 wt.% DPAVBi:MADN (8 nm)/ Bepp2 (50 nm)/ LiF (1 nm)/ Al (100 nm) [4] |
|---|---|
| Colour | White
|
| Max. Power Efficiency | 37.6 lm W−1 |
| Max. Current Efficiency | 38.1 cd/A |
| Max. EQE | 11.9% |
*For chemical structure information, please refer to the cited references
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99% purity) | M2189A1 | 500 mg | £290 |
| Sublimed (>99% purity) | M2189A1 | 1 g | £480 |
MSDS Documentation
DPAVBi MSDS sheetLiterature and Reviews
- Fluorinated anthracene derivatives as deep-blue emitters and host materials for highly efficient organic light-emitting devices, L. Li et al., RSC Adv., 5, 59027 (2015); DOI: 10.1039/c5ra02357b.
- Silicon-Cored Anthracene Derivatives as Host Materials for Highly Efficient Blue Organic Light-Emitting Devices, Y. Lyu et al., Adv. Mater., 20, 2720–2729 (2008); DOI: 10.1002/adma.200602885.
- Extremely efficient flexible organic light-emitting diodes with modified graphene anode, T. Han et al., Nat. Photonics, 6, 105 (2012); DOI: 10.1038/NPHOTON.2011.318.