mCBP

CAS Number 342638-54-4

MSDS

Host Material for Fluorescent and Phosphorescent Emitters

Applications in blue, green, orange, and yellow OLED and TADF-OLED devices

mCBP is an isomer of CBP. 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.

mCBP from Ossila was used in the high-impact paper (IF 38.5), Pure-blue single-layer organic light-emitting diodes based on trap-free hyperfluorescence, O. Sachnik et al., Nat. Mater., 24, 1742–1748 (2025); DOI: 10.1038/s41563-025-02294-8.

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	λ_max 340 nm in toluene
Fluorescence	N/A
HOMO/LUMO	HOMO = 6.0 eV, LUMO = 2.4 eV [1]
Synonyms	n/a
Classification or Family	Carbazole derivatives, fluorescent host materials, blue exciplex host materials, sublimed materials, OLED-TADF, Organic electronics.

*Measurable with a USB spectrometer

Product Details

Purity	Sublimed* >99% (HPLC), Unsublimed >98% (1H NMR)
Melting Point	272 °C
Appearance	White crystals/powder

Purity

Sublimed* >99% (HPLC),

Unsublimed >98% (1H NMR)

Melting Point

272 °C

Appearance

White crystals/powder

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

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]
Color	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]
Color	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]
Color	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]
Color	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]
Color	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]
Color	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-TRz:mCBP* (30 nm)/T2T (10 nm)/Alq₃ (55 nm)/LiF (0.8 nm)/Al (100 nm) [6]
Color	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	£260
Sublimed (>99% purity)	M2186A1	1 g	£400
Sublimed (>99% purity)	M2186A1	5 g	£1650
Unsublimed (>98% purity)	M2186B1	1 g	£200
Unsublimed (>98% purity)	M2186B1	5 g	£800

MSDS Documentation

mCBP MSDS sheet

Literature and Reviews

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.
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.
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.

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.
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.
High-efficiency organic light-emitting diodes with fluorescent emitters, H. Nakanotani et al., Nat. Commun., 5, 4016 (2014); DOI: 10.1038/ncomms5016.

CBP, 4,4′-Bis(N-carbazolyl)-1,1′-biphenyl

From $173

oCBP

From $285

BCBP

From $285

Technical Support

To find out more, complete the form below to contact our technical team directly. You can also email info@ossila.com to request a quote or place an order.

Please fill the field

Please enter valid email address

Please enter your message