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Product Code M2420B1-100mg
Price £190 ex. VAT

Blue Dopant Material with Boron-based triarylamines

High purity sublimed narrowband multi-resonance thermally activated delayed fluorescent (MR-TADF) emitter for highly efficient OLEDs

t-DABNA (CAS number 1802003-07-1), namely 2,12-di-tert-butyl-5,9-bis(4-(tert-butyl)phenyl)-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracene, is a DABNA derivative having four bulky tert-butyl side groups. Multiresonance MR-TADF emitter t-DABNA shows a high EQE of 25% and maintains the high efficiency even at high doping concentrations, owing to the intermolecular interaction being suppressed by the bulky tert-butyl group. t-DABNA has a suitable emission spectrum for application as pure blue OLEDs, showing a narrow FWHM of less than 50 nm, a high PLQY of around 90% and a CIEy of 0.07.

unsublimed t-DABNA  >99.0%, sublimed t-DABNA >99.5%

Sublimed & Unsublimed

unsublimed >99.0%, sublimed >99.5%

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Developing longer life-time OLEDs 1802003-07-1

Developing longer life-time OLEDs

high external quantum efficiency of 7.6% and longer life time than conventional pyrene blue emitter

Narrow band emission 1802003-07-1

Narrow band emission

full-width half-maximum < 50nm

t-DABNA emitter, together with 9,10-bis(1-naphtyl)anthracene (α-ADN) host to harvest only singlet excitons, showed high external quantum efficiency of 7.6% as fluorescent emitters and lifetime longer than that of a conventional pyrene derived blue emitter.

Boron-based multiresonance MR-TADF emitters show great application potential in great color purity with narrowband emission and superior photoluminescence quantum yield (PLQY) coupled with the small singlet–triplet energy splitting.

A planar structure, v-DABNA, is also available in sublimed grade purity.

General Information

CAS number 1802003-07-1
Chemical formula C46H53BN2
Molecular weight 644.74 g/mol
Absorption* λmax 445 nm
Fluorescence λem 462 nm (film)
HOMO/LUMO HOMO = 5.72eV, LUMO = 3.02 eV (ES = 2.80 eV, ET = 2.63 eV)
Synonyms 2,12-di-tert-butyl-5,9-bis(4-(tert-butyl)phenyl)-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracene
Classification / Family Triarylamine derivatives, Blue dopant, Multiresonance thermally activated delayed fluorescent (MR-TADF), Sublimed materials.

Product Details

Purity Sublimed* >99.5% (HPLC), Unsublimed >99% (HPLC)
Melting point TGA: Td = 418.7° C. (5% weight loss)
Appearance Yellow powder/crystals

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

t-DABNA - 1802003-07-1 - 2,12-di-tert-butyl-5,9-bis(4-(tert-butyl)phenyl)-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracene chemical structure
2,12-di-tert-butyl-5,9-bis(4-(tert-butyl)phenyl)-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracene (t-DABNA) chemical structure, 1802003-07-1

Device Structure(s)

Device structure ITO/HATCN (10 nm)/TAPC (25 nm)/mCBP:30% f-tpb1*:1.0% t-DABNA (30 nm)/TmPyPB (35 nm)/LiF (1 nm)/Al (100 nm) [1]
Colour blue light emitting device Blue
Max Current Efficiency 28.7 cd/A 
Max EQE 29.6%
Max. Power Efficiency 19.6 lm W-1

 *For chemical structure information, please refer to the cited references.


Grade Product Code Quantity Price
Unsublimed (>99.0% purity) M2420B1 100 mg £190
Unsublimed (>99.0% purity) M2420B1 250 mg £380
Unsublimed (>99.0% purity) M2420B1 500 mg £610
Unsublimed (>99.0% purity) M2420B1 1 g £970
Sublimed (>99.5% purity) M2420A1 100 mg £250
Sublimed (>99.5% purity) M2420A1 250 mg £500
Sublimed (>99.5% purity) M2420A1 500 mg £800
Sublimed (>99.5% purity) M2420A1 1 g £1280

MSDS Documentation

t-DABNA - 1802003-07-1 - 2,12-di-tert-butyl-5,9-bis(4-(tert-butyl)phenyl)-5,9-dihydro-5,9-diaza-13b-boranaphtho[3,2,1-de]anthracenet-DABNA MSDS Sheet

Literature and Reviews

  1. Blue Phosphorescence and Hyperluminescence Generatedfrom Imidazo[4,5-b]pyridin-2-ylidene-Based Iridium(III)Phosphors, X. Yang et al., Adv. Sci., 9, 2201150 (2022); DOI: 10.1002/advs.202201150.
  2. Ideal blue thermally activated delayed fluorescence emission assisted by a thermally activated delayed fluorescence assistant dopant through a fast reverse intersystem crossing mediated cascade energy transfer process, S. Han et al., J. Mater. Chem. C, 7, 3082-3089 (2019); DOI: 10.1039/C8TC06575F.
  3. Efficient and Stable Deep-Blue Fluorescent Organic Light-Emitting Diodes Employing a Sensitizer with Fast Triplet Upconversion, D. Zhang et al., Adv. Mater., 32 (19), 1908355 (2020); DOI: 10.1002/adma.201908355.
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