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.

Product Details

Purity	Sublimed >99% (HPLC), Unsublimed >98% (1H NMR)
Melting point	n/a
Appearance	White crystals/powder

Chemical Structure

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
Max. Power Efficiency	35.6 lm W−1
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
Max. Power Efficiency	97.1 lm W−1
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
Max. Power Efficiency	15.1 lm W−1
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
Max. Power Efficiency	32.4 lm W−1
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
Max. Power Efficiency	56.7 lm W−1
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
Max. Power Efficiency	56.2 lm W−1
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
Max. Power Efficiency	33.0 lm W−1
Max. Current Efficiency	56.0 cd/A
Max. EQE	17.2%

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

Pricing

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

mCBP MSDS sheet

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.

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To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.

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