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Product Code M2189A1-500mg
Price £290 ex. VAT

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


Grade Order Code Quantity Price
Sublimed (>99% purity) M2189A1 500 mg £290
Sublimed (>99% purity) M2189A1 1 g £480

MSDS Documentation


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.
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