mCBP
CAS Number 342638-54-4
High Purity Sublimed Materials, Host Materials, Materials, Semiconducting Molecules, TADF Materials
mCBP, host material for blue, green, orange, and yellow fluorescent and phosphorescent emitters
Applications in OLED and TADF-OLED devices, now available online for priority dispatch
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 |
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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
Purity |
Sublimed* >99% (HPLC), Unsublimed >98% (1H NMR) |
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Melting point | n/a |
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] |
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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] |
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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] |
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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] |
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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] |
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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] |
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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] |
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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 | £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
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.