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Product Code M2186A1
Price £196.00 ex. VAT

mCBP, 3,3′-Di(9H-carbazol-9-yl)-1,1′-biphenyl, is an isomer of CBP, 4,4′-Di(9H-carbazol-9-yl)-1,1′-biphenyl. The meta-linkage in mCBP limits conjugation to the central biphenyl, preventing excimer formation and thus resulting in a higher triplet energy of 2.8 eV.

Like CBP and CDBP, mCBP is widely used in OLED and TADF-OLED devices as a host material for blue, green, orange, and yellow fluorescent and phosphorescent emitters.

With two carbazole units, mCBP is electron-rich and can be used to form exciplexes with electron acceptors (such as POT2T) as blue emitters.

General Information

CAS number 342638-54-4
Full name 3,3′-Di(9H-carbazol-9-yl)-1,1′-biphenyl
Chemical formula C36H24N2
Molecular weight 484.59 g/mol
Absorption λmax 340 nm in toluene
Fluorescence n/a
HOMO/LUMO HOMO = 6.0 eV, LUMO = 2.4 eV [1]
Synonyms n/a
Classification / Family Carbazole derivatives, fluorescent host materials, blue exciplex host materials, sublimed materials, OLED-TADF, Organic electronics.

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

Product Details


Sublimed* >99% (HPLC),

Unsublimed >98% (1H NMR)

Melting point n/a
Appearance White crystals/powder

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

mCBP structure
Chemical Structure of mCBP

Device Structure(s)

Device structure ITO/ZnO (20 nm)/10 wt% Cs2CO3:BPhen (20 nm)/BPhen (20 nm)/10 wt% TXO-PhCz:mCBP (30 nm)/TAPC (40 nm)/MoO3 (10 nm)/Al (100 nm) [1]
Colour Green green
Max. Power Efficiency 35.6 lm W1
Max. Current Efficiency 53.9 cd/A
Max. EQE 16.4%
Device structure ITO/HATCN (15 nm)/TAPC (60 nm)/TCTA (5 nm)/mCBP (5 nm)/mCBP:POT2T:Ir(tptpy)2acac (1:1:0.2%, 15 nm)/POT2T (45 nm)/Liq (1.5 nm)/Al (150 nm) [2]
Colour White white
Max. Power Efficiency 97.1 lm W1
Max. Current Efficiency 74.2 cd/A
Max. EQE 22.45%
Device structure ITO (50 nm)/NPD (40 nm)/TCTA (15 nm)/mCP) (15 nm)/1 wt% DABNA-2*:mCBP (20 nm)/TSPO1* (40 nm)/LiF (1 nm)/Al (100 nm) [3]
Colour Blue blue
Max. Power Efficiency 15.1 lm W1
Max. Current Efficiency 21.1 cd/A
Max. EQE 20.2%
Device structure ITO/HATCN (10 nm)/NPD (30 nm)/TAPC (10 nm)/ 2 % Pt7O7*:mCBP (25 nm)/DPPS (10 nm)/BmPyPB (40 nm)/LiF/Al [4]
Colour Blue blue
Max. Power Efficiency 32.4 lm W1
Max. EQE 26.3%
Device structure ITO/HATCN (10 nm)/NPD (30 nm)/TAPC (10 nm)/ 18 % Pt7O7*:mCBP (25 nm)/DPPS (10 nm)/BmPyPB (40 nm)/LiF/Al [4]
Colour White white
Max. Power Efficiency 56.7 lm W1
Max. EQE 24.1%
Device structure ITO (50 nm)/NPD (40 nm)/TCTA (15 nm)/mCP) (15 nm)/1 wt% DABNA-2*:mCBP (20 nm)/TSPO1* (40 nm)/LiF (1 nm)/Al (100 nm) [5]
Colour Yellow yellow
Max. Power Efficiency 56.2 lm W1
Max. Current Efficiency 66.2 cd/A
Max. EQE 23.2%
Device structure ITO/TAPC (35 nm)/1 wt%-TBRb:25 wt%-PXZ-TRX*:mCBP (30 nm)/T2T (10 nm)/Alq3 (55 nm)/LiF (0.8 nm)/Al (100 nm) [6]
Colour Yellow yellow
Max. Power Efficiency 33.0 lm W1
Max. Current Efficiency 56.0 cd/A
Max. EQE 17.2%

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


Grade Order Code Quantity Price
Sublimed (>99% purity) M2186A1 500 mg £196.00
Sublimed (>99% purity) M2186A1 1 g £312.00
Sublimed (>99% purity) M2186A1 5 g £1250.00
Unsublimed (>98% purity) M2186B1 1 g £156.00
Unsublimed (>98% purity) M2186B1 5 g £624.00

MSDS Documentation


Literature and Reviews

  1. n-Doping-induced efficient electron-injection for high efficiency inverted organic light-emitting diodes based on thermally activated delayed fluorescence emitter, Y. Chen et al., J. Mater. Chem. C, 5, 8400 (2017); DOI: 10.1039/c7tc02406a.
  2. High efficiency (~ 100 lm W-1) hybrid WOLEDs by simply introducing ultrathin non-doped phosphorescent emitters in a blue exciplex host, S, Ying et al., J. Mater. Chem. C, 6, 7070 (2018); DOI: 10.1039/c8tc01736k.
  3. Ultrapure Blue Thermally Activated Delayed Fluorescence Molecules: Efficient HOMO–LUMO Separation by the Multiple Resonance Effect, T. Hatakeyama et al., Adv. Mater., 28, 2777–2781 (2016); DOI: 10.1002/adma.201505491.
  4. Efficient and Stable White Organic Light-Emitting Diodes Employing a Single Emitter, G. Li et al., Adv. Mater., 26, 2931–2936 (2014); DOI: 10.1002/adma.201305507.
  5. Aromatic-Imide-Based Thermally Activated Delayed Fluorescence Materials for Highly Efficient Organic Light-Emitting Diodes, M. Li et al., Angew. Chem. Int. Ed., 56, 8818 –8822 (2017); DOI: 10.1002/anie.201704435.
  6. High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. Commun., 5, 4016 (2014); DOI: 10.1038/ncomms5016.

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.

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