dPVBi

Order Code: M431
MSDS sheet

Price

(excluding Taxes)

£79.00


General Information

CAS number 142289-08-5
Chemical formula C40H30
Molecular weight 510.67 g/mol
Absorption λmax 351 nm (THF)
Fluorescence λem 447 nm (THF)
HOMO/LUMO HOMO = 5.9 eV, LUMO = 2.8 eV
Synonyms 4,4'-Bis(2,2-diphenylvinyl)biphenyl
4,4-Bis(2,2-diphenylvinyl)-1,1-diphenyl
4,4'-Bis(2,2-diphenylethenyl)-1,1'-biphenyl
Classification / Family Hole-injection materials, Hole-transporting materials, Blue light-emitting materials, Host materials, Organic light-emitting diodes (OLEDs), Organic electronics

 

Product Details

Purity Sublimed* >99.7%
Melting point  207 °C
Colour Pale yellow powder/crystals

*Sublimation is a technique used to obtain ultra pure grade chemicals to get rid of mainly trace metals and inorganic impurities. Sublimation happens under certain pressure for chemicals to only go through two physical stages from a solid sate to vapour (gas) and then the vapour condensed to a solid state on a cool surface (referred to as cold finger). The most typical examples of sublimation are iodine and dry ice. For more details about sublimation, please refer to sublimed materials for OLEDs and perovskites and our collection of sublimed materials.

 

Chemical Structure

dPVBi chemical structure

Chemical Structure of 4,4 -bis(2,2 -diphenylvinyl)-1,1 -diphenyl (dPVBi); CAS No. 142289-08-5; Chemical Formula C40H30.

 

Applications

DPVBi, 4,4 -bis(2,2 -diphenylvinyl)-1,1 -diphenyl, is a wide bandgap small molecule semiconducting materials commonly used as a blue host emitting material in OLEDs.

It has been reported that DPVBi can effectively manipulate the Schottky energy barrier between the ITO and the emitting layer and thus significantly enhance hole-injection and greatly improving the current and luminance efficiencies of OLEDs as well as their stability [1].

Device structure

ITO/CuPc/NPB/DPVBi:DCJTB/Alq/LiF/Al [2]                       
Colour White   white
Max. Luminance 7,822 cd/m2
Max. Current Efficiency 2.45 cd/A                                                     
Max. Power Efficiency 1.75 lm W1
Device structure  ITO/ NPB (70 nm)/DPVBi:BCzVBi (15 wt%, 15 nm)/ADN:BCzVBi (15% wt%, 15 nm)/BPhen (30 nm)/ Liq (2 nm)/Al (100 nm) [3]
Colour Deep Blue   deep blue
Max. Luminance       8,668 cd/m2
Max. Current Efficiency  5.16 cd/A
Device structure ITO/MoO3 (5 nm)/ NPB (35 nm)/CBP (5 nm)/DPVBi (I) (10 nm)/CBP:Rubrene (4:1) (3 nm)/DPVBi (II) (30 nm)/CBP (HBL3) (2 nm)/BPhen (10 nm)/LiF/Al [4]
Colour White   white
Max. Luminance  2,650 cd/m2
Max. Current Efficiency  4.6 cd/A
Device structure ITO/MoO3 (5 nm)/ NPB (35 nm)/CBP (5 nm)/DPVBi (I) (10 nm)/CBP:Rubrene (4:1) (3 nm)/DPVBi (II) (30 nm)/CBP (HBL3) (2 nm)/BPhen (10 nm)/LiF/Al [5]
Colour White   white
Max. Luminance  12,100 cd/m2
Current Efficiency @ 11 V 5.03 cd/A
Device structure ITO/NPB/DPVBi:BCzVBi-6%/MADN:DCM2-0.5%/Bphen/Liq/Al [6]
Colour White   white
Max. Luminance  15,400 cd/m2
Max. Current Efficiency 6.19 cd/A

Device structure                      ITO/TBADN:3 wt% DSA-Ph (27 nm)/DPVBi:5 wt% BCzVB (3 nm)/LiF/Al [7]
Colour Blue   blue
Max. Luminance  16,530
Max. Current Efficiency  9.77 cd/A
Max. Power Efficiency  5.68 lm W1

Device structure glass/Ag (100 nm)/ITO (90 nm)/2-TNATA (60 nm)/NPB (15 nm)/ DPVBi:DCJTB (1.2%, 30 nm)/Alq3 (20 nm)/Li (1.0 nm)/Al (2.0 nm)/Ag (20 nm)/ITO(63 nm)/SiO2 (42 nm) [8]
Colour White   white
Max. Luminance  14,500 cd/m2
Max. Power Efficiency  1.4 lm W1

 

Characterisations

hplc of dpvbi

HPLC trace of 4,4 -bis(2,2 -diphenylvinyl)-1,1 -diphenyl (dPVBi).

 

Literature and Reviews

  1. Enhanced Performance of Organic Light Emitting Device by Incorporating 4,4-Bis(2,2-diphenylvinyl)-1,1-Biphenyl as an Efficient Hole-Injection Nano-Layer, W. Yun et al., J. Nanosci. Nanotechnol., 13 (3), 2166-2170 (2013).
  2. A white OLED based on DPVBi blue light emitting host and DCJTB red dopant, X. Zheng et al., Display, 24 (3), 121-124 (2003), doi:10.1016/j.displa.2003.09.004.
  3. Highly efficient blue organic light-emitting diodes using dual emissive layers with host-dopant system, B. Lee et al., J. Photon. Energy. 3(1), 033598 (2013), doi:10.1117/1.JPE.3.033598.
  4. Enhancing Color Purity and Stable Efficiency of White Organic Light Diodes by Using Hole-Blocking Layer, C-J. Huang et al., J. Nanomater., 2014, http://dx.doi.org/10.1155/2014/915894.
  5. Efficient white organic light-emitting diodes based on a balanced split of the exciton-recombination zone using a graded mixed layer as an electron-blocking layer, C. K. Kim et al., J. Soc. Info. Display, 18 (1), 97-102 (2012).
  6. High efficient white organic light-emitting diodes using BCzVBi as blue fluorescent dopant,
    Y. Kim et al., J Nanosci. Nanotechnol., 8(9), 4579-83 (2008).
  7. Color tunability in multilayer OLEDs based on DCM and DPVBi as emitting materials, P. Petrova et al., J. Phys.: Conference Series 514, 012015 (2014), doi:10.1088/1742-6596/514/1/012015.
  8. White top-emitting organic light-emitting diodes using one-emissive layer of the DCJTB doped DPVBi layer, M. Kim et al., Thin Solid Films 516, 3590–3594 (2008); doi:10.1016/j.tsf.2007.08.078.