DPAVBi

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DPAVBi, HTL material in organic electronic devices

Sky-blue fluorescent emitter in OLED devices

DPAVBi, 4,4′ -Bis[4-(di-p-tolylamino)styryl]biphenyl is widely used as a sky-blue fluorescent emitter in OLED devices. It is also used as a blue dopant for white TADF-OLED devices.

Bearing two triarylamine end units, DPAVBi is electron-rich in nature. It has applications as a hole-transporting material in organic electronic devices.

General Information

CAS number	119586-44-6
Full name	4,4′-Bis[4-(di-p-tolylamino)styryl]biphenyl
Chemical formula	C₅₆H₄₈N₂
Molecular weight	748.99 g/mol
Absorption*	λ_max 405 nm in THF
Fluorescence	λ_max 474 nm in THF
HOMO/LUMO	HOMO = 5.3 eV, LUMO = 2.6 eV [1]
Synonyms	4,4'-[Biphenyl-4,4'-diyldi(E)ethene-2,1-diyl]bis[N,N-bis(4-methylphenyl)aniline]
Classification / Family	Triarylamines, Blue fluorescent emitter and dopant materials, OLED materials, Organic electronics, Sublimed materials.

* Measurable with an optical spectrometer, see our spectrometer application notes.

Product Details

Purity	Sublimed* > 99% (HPLC)
Melting point	> 300 °C (0.5% weight loss)
Appearance	Greenish-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/HATCN (5 nm)/TAPC (40 nm)/2F-DPA:DPAVBi* (7%, 20 nm)/TPBi (40 nm)/LiF (1 nm)/Al (100 nm) [1]
Colour	Blue
Max. Power Efficiency	7.7 lm W⁻¹
Max. Current Efficiency	9.6 cd/A
Max. Luminance	27,638 cd/m²
Max. EQE	5.2%

Device structure	ITO/m-MTDATA(15 nm)/a-NPD (40 nm)/PATSPA:DPAVBi* (1% wt%, 30 nm)/Alq₃ (40 nm)/LiF/Al [2]
Colour	Blue
Max. Current Efficiency	7.5cd/A
Max. Luminance	48,128 cd/m²
Max. EQE	6.3%

Device structure	PET/Graphene/GraHIL (50 nm)/NPB (20 nm)/NPB:TBADN:rubrene (1%) (10 nm)/NPB:TBADN:DPAVBi (5%) (10 nm)/TBADN:DPAVBi (5%) (15 nm)/Bebq₂ (20 nm)/BaF₂ (1 nm)/aluminium (130 nm) [3]
Colour	White
Max. Power Efficiency	37.2 lm W⁻¹
Max. Current Efficiency	30.2 cd/A

Device structure	ITO (95 nm)/ HATCN (10 nm)/ NPB (40 nm)/ TCTA (10 nm)/ 0.8 wt.% TBRb: 10wt.% 4CzPN: mCBP (12 nm)/ 30 wt.% Bepp2: mCBP (5 nm)/ Bepp2 (3 nm)/ 5 wt.% DPAVBi:MADN (8 nm)/ Bepp2 (50 nm)/ LiF (1 nm)/ Al (100 nm) [4]
Colour	White
Max. Power Efficiency	37.6 lm W⁻¹
Max. Current Efficiency	38.1 cd/A
Max. EQE	11.9%

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

Pricing

Grade	Order Code	Quantity	Price
Sublimed (>99% purity)	M2189A1	500 mg	£260
Sublimed (>99% purity)	M2189A1	1 g	£440

MSDS Documentation

DPAVBi MSDS sheet

Literature and Reviews

Fluorinated anthracene derivatives as deep-blue emitters and host materials for highly efficient organic light-emitting devices, L. Li et al., RSC Adv., 5, 59027 (2015); DOI: 10.1039/c5ra02357b.
Silicon-Cored Anthracene Derivatives as Host Materials for Highly Efficient Blue Organic Light-Emitting Devices, Y. Lyu et al., Adv. Mater., 20, 2720–2729 (2008); DOI: 10.1002/adma.200602885.
Extremely efficient flexible organic light-emitting diodes with modified graphene anode, T. Han et al., Nat. Photonics, 6, 105 (2012); DOI: 10.1038/NPHOTON.2011.318.
Exciton-Adjustable Interlayers for High Efficiency, Low Efficiency Roll-Off, and Lifetime Improved Warm White Organic Light-Emitting Diodes (WOLEDs) Based on a Delayed Fluorescence Assistant Host, Z. Wang et al., Adv. Funct. Mater., 28, 1706922 (2018); DOI: 10.1002/adfm.201706922.

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.