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Product Code M2420B1-100mg
Price $238 ex. VAT

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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, 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.

Pricing

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.
  4. High Efficiency of over 25% and Long Device Lifetime of over 500 h at 1000 nit in Blue Fluorescent Organic Light-Emitting Diodes, J. Park et al., Adv. Mater., 34 (21), 2108581 (2022);
  5. Paradigm change of blue emitters: Thermally activated fluorescence emitters as long-living fluorescence emitters by triplet exciton quenching, K. Lee et al., Org. Electron., 75, 105377 (2019); DOI: 10.1016/j.orgel.2019.105377.
  6. Phosphor sensitized thermally activated delayed fluorescence organic light-emitting diodes with ideal deep blue device performances, K. Lee et al., J. Mater. Chem. C, 7, 8562-8568 (2019); DOI: 10.1039/C9TC02746G.

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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