v-DABNA
CAS Number 2251782-13-3
Blue Dopant Materials, Dopant Materials, High Purity Sublimed Materials, Materials, MR-TADF Materials, OLED Materials,
Blue Dopant Material with Boron-based Pseudo-pentacene Decorated with Triarylamines
High purity sublimed narrowband multiresonance thermally activated delayed fluorescent (MR-TADF) emitter for highly efficient OLEDs
v-DABNA (CAS number 2251782-13-3), N7,N7,N13,N13,5,9,11,15-octaphenyl-5,9,11,15-tetrahydro-5,9,11,15-tetraaza-19b,20b-diboradinaphtho[3,2,1-de:1',2',3'-jk]pentacene-7,13-diamine, can be considered as a structure having a pseudo-pentacene core symmetrically containing boron and nitrogen on the second and fourth rings, decorated with peripheral diphenylamines.
Thermally stable
5% weight loss at 496° C in TGA
Worldwide shipping
Quick and reliable shipping
Provides narrow band emission
Full-width half-maximum of 14 nm in toluene
Excellent performance
Outstanding external quantum efficiency of 34.4%
v-DABNA has been demonstrated to be an efficient terminal emitter with high PLQY of about 100% and narrowband emission with an FWHM of 14 nm in toluene. Deep blue device based on v-DABNA as emitting layer shows outstanding EQE of 34.4% and very low efficiency roll-off of 5% at 100 cd m−2.
Comparing with t-DABNA, v-DABNA has relatively longer device lifetime albeit it has a red- shifted peak emission wavelength. v-DABNA has also a planar molecular π framework which makes it prone to excimer formation via π-π intermolecular interaction. For this reason, low doping concentration as low as 1% should be used for higher color purity emission.
General Information
| CAS number | 2251782-13-3 |
|---|---|
| Chemical formula | C78H54B2N6 |
| Molecular weight | 1096.93 g/mol |
| Absorption* | λmax 457 nm (in toluene) |
| Fluorescence | λem 468 nm (in toluene) |
| HOMO/LUMO | HOMO = 5.4 eV, LUMO = 2.8 eV (ES = 2.64 eV, ET = 2.62 eV) |
| Synonyms | N7,N7,N13,N13,5,9,11,15-Octaphenyl-5,9,11,15-tetrahydro-5,9,11,15-tetraaza-19b,20b-diboradinaphtho[3,2,1-de:1',2',3'-jk]pentacene-7,13-diamine |
| Classification / Family | Triarylamine derivatives, Blue dopant, Multiresonance thermally activated delayed fluorescent (MR-TADF), Narrowband TADF molecule, Sublimed materials. |
Product Details
| Purity | Sublimed* >99% (HPLC) |
|---|---|
| Melting point | TGA: Td = 496° C (5% weight loss) [5] |
| Appearance | Yellow crystals/powder |
* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.
Chemical Structure
Device Structure(s)
| Device structure | ITO/PEDOT:PSS/PYD2:10 wt.% Au-1:0.5 wt.% v-DABNA (50 nm)/DPEPO (10 nm)/TPBi (40 nm)/LiF (1.2 nm)/Al (100 nm) [2] |
|---|---|
| Colour |  Deep blue |
| Max Current Efficiency | 22.5 cd/A |
| Max EQE | 16..6% |
| Max. Power Efficiency | 17.9 lm W-1 |
| Device structure | ITO/HATCN (5 nm)/NPB(30 nm)/TCTA (10 nm)/mCPBC:30 wt% 23PCX:1wt% v-DABNA (30 nm)/CzPhPy (10 nm)/DPyPA:Liq (1:1,30 nm)/LiF (0.5 nm)/Al (150 nm) [2] |
|---|---|
| Colour | Blue |
| Max EQE | 25.2% |
| Max. Power Efficiency | 53.5 lm W-1 |
*For chemical structure information, please refer to the cited references.
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99% purity) | M2423A1 | 100 mg | £450 |
| Sublimed (>99% purity) | M2423A1 | 250 mg | £890 |
| Sublimed (>99% purity) | M2423A1 | 500 mg | £1430 |
| Sublimed (>99% purity) | M2423A1 | 1 g | £2290 |
MSDS Documentation
v-DABNA MSDS SheetLiterature and Reviews
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Narrowband deep-blue organic light-emitting diode featuring an organoboron-based emitter, Y. Kondo et al., Nat. Photonics 13, 678–682 (2019); DOI: 10.1038/s41566-019-0476-5.
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A gold(III)–TADF emitter as a sensitizer for high-color-purity and efficient deep-blue solution-processed OLEDs, J. Mater. Chem. C, 10, 4590 (2022); DOI: 10.1039/d1tc05487b.
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New [3+2+1] Iridium Complexes as EffectivePhosphorescent Sensitizers for Efficient NarrowbandSaturated–Blue Hyper–OLEDs, C. Wu et al., Adv. Sci., 10, 2301112 (2023); DOI: 10.1002/advs.202301112.