FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code M2189A1-500mg
Price $363 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


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* λmax 405 nm in THF
Fluorescence λmax 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.

Chemical Structure

Chemical structure of DPAVBi
Chemical structure of DPAVBi

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 blue light emitting device
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 blue light emitting device
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 white light emitting device
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 white light emitting device
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 £290
Sublimed (>99% purity) M2189A1 1 g £480

MSDS Documentation

DPAVBi MSDSDPAVBi MSDS sheet

Literature and Reviews

  1. 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.
  2. 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.
  3. 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.
  4. 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. 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.

Return to the top