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Product Code M2423A1-LT-100mg
Price $563 ex. VAT

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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, 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 2251782-13-3

Thermally stable

5% weight loss at 496° C in TGA

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narrow band emission v-DABNA

Provides narrow band emission

Full-width half-miximum of 14 nm in toluene

Excellent 2251782-13-3 performance

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

v-dabna - 2251782-13-3 - chemical structure
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 (v-DABNA) chemical structure, 2251782-13-3

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 blue light emitting device 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 light emitting device 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 - 2251782-13-3v-DABNA MSDS Sheet

Literature and Reviews

  1. 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.
  2. 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.
  3. 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.
  4. Unexpected Quasi-Axial Conformer in Thermally Activated Delayed Fluorescence DMAC-TRZ, Pushing Green OLEDs to Blue, K. Stavrou et al., Adv. Funct. Mater., 33, 2300910 (2023); DOI: 10.1002/adfm.202300910.
  5. Carbazole-Decorated Organoboron Emitters with Low-Lying HOMO Levels for Solution-Processed Narrowband Blue Hyperfluorescence OLED Devices, K. Zhang et al., e202313084 (2023); DOI: 10.1002/ange.202313084.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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