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Product Code M2289A1-100mg
Price $311 ex. VAT

CbBPCb, highly efficient bipolar phosphorescent host

Can achieve high quantum efficiencies in blue PhOLEDs


CbBPCb, having similar structure to the well-known host material mCBP, is a highly efficient carboline-based phosphorescent host with oligophenyl spacer. CbBPCb is bipolar, but shows a higher electron mobility of 3.83×10-6 cm2 V-1 s-1 than its hole mobility of 6.33×10-7 cm2 V-1 s-1.

With a wide bandgap and high triplet energy level, CbBPCb can achieve high quantum efficiencies of over 30.0% in blue phosphorescent organic light emitting diodes. This is due to the host-guest energy transfer, balanced charge injection / transporting and effective exciton confinement within the emitting layer [1, 2]

General Information


CAS number 1469997-91-8
Chemical formula C34H22N4
Molecular weight 486.57 g/mol
Absorption λmax 240 nm, 297 nm (THF)
Photoluminescence λem 382 nm (THF)
HOMO/LUMO HOMO = 6.25 eV, LUMO = 2.79 eV; ET = 2.77 eV [1]
Chemical name 3,3'-Di(9H-pyrido[2,3-b]-indol-9-yl)biphenyl
Synonyms mCbBP
Classification / Family Carboline derivatives, Phosphorescent host materials, Sublimed materials, Semiconducting small molecules

Product Details


Purity Sublimed >99.0% (HPLC)
Melting point mp = 251 °C, Tg = 96 °C (lit.)
Appearance Off-white powder/crystals

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the sublimed materials.

Chemical Structure


CbBPCb chemical structure, 1469997-91-8
Chemical structure of 3,3'-Di(9H-pyrido[2,3-b]-indol-9-yl)biphenyl (CbBPCb)

Device Structure(s)


Device structure ITO (50 nm)/PEDOT:PSS (60 nm)/TAPC (20 nm)/mCP (10 nm)/CbBPCb:10wt% FIrpic (25 nm)/TSPO1 (35 nm)/LiF (1 nm)/Al (200 nm) [2]
Colour blue light emitting device Blue
Max. Current Efficiency 53.6 cd/A
Max. EQE 30.1
Max. Power Efficiency 50.6 Im/W

Pricing


Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2289A1 100 mg £230
Sublimed (>99.0% purity) M2289A1 250 mg £460
Sublimed (>99.0% purity) M2289A1 500 mg £800
Sublimed (>99.0% purity) M2289A1 1 g £1400

MSDS Documentation


CbBPCb MSDSCbBPCb MSDS sheet

Literature and Reviews


  1. Above 30% External Quantum Efficiency in Blue Phosphorescent Organic Light-Emitting Diodes Using Pyrido[2,3-b]indole Derivatives as Host Materials, C. Lee et al., Adv. Mater., 25(38), 5450-4 (2013); DOI: 10.1002/adma.201301091.
  2. FIrpic: archetypal blue phosphorescent emitter for electroluminescence, E. Baranoff et al., Dalton Trans. 44, 8318-8329 (2015); DOI: 10.1039/C4DT02991G.
  3. Functionalization of phosphorescent emitters and their host materials by main-group elements for phosphorescent organic light-emitting devices, X. Yang et al., Chem. Soc. Rev., 44, 8484-8575 (2015); DOI: 10.1039/C5CS00424A.
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