t-DABNA

CAS Number 1802003-07-1

Blue Dopant Materials, Dopant Materials, High Purity Sublimed Materials, Materials, MR-TADF Materials, OLED Materials, Semiconducting Molecules, TADF Materials

MSDS

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.

Sublimed & Unsublimed

unsublimed >99.0%, sublimed >99.5%

Worldwide shipping

Quick and reliable shipping

Developing longer life-time OLEDs

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

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*	λ_max 445 nm
Fluorescence	λ_em 462 nm (film)
HOMO/LUMO	HOMO = 5.72eV, LUMO = 3.02 eV (E_S = 2.80 eV, E_T = 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: T_d = 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

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
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 MSDS Sheet

Literature and Reviews

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.
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.
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.

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);
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.
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.