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mCBP-CN, electron transporting host material
Better film morphology and device thermal stability compared to mCBP
mCBP-CN, or 3,3′-di(carbazol-9-yl)-5-cyano-1,1′-biphenyl, has a structure of two carbazole units attached to a biphenyl linker. The only difference that it has to the well known host mCBP is that a polar cyano (CN) group is attached to one of the phenyls. The asymmetrically attached CN group can both increase the ground-state dipole moment and greatly improve film morphology and device thermal stabilities.
The strong electron withdrawing CN group can also effectively alter the electron densities of the orbitals, making mCBP-CN an electron transporting host with deep HOMO/LUMO energy levels (while mCBP is a hole transport host material).
General Information
| Full name | 3,3′-di(carbazol-9-yl)-5-cyano-1,1′-biphenyl |
|---|---|
| CAS number | n.a. |
| Chemical formula | C37H23N3 |
| Molecular weight | 509.60 g/mol |
| Absorption | λmax 326 nm, 335 nm in film |
| PL | λem 412 nm in film |
| HOMO/LUMO | HOMO = 6.10 eV, LUMO = 2.50 eV [1] |
| Synonyms | mCBPCN, 3′,5-di(9H-carbazol-9-yl)-[1,1′-biphenyl]-3-carbonitrile |
| Classification / Family | Carbazole derivatives, Fluorescent and phosphorescent host materials, Sublimed materials |
Product Details
| Purity | Sublimed >99.0% (HPLC) |
|---|---|
| Melting point | mp = 256 °C, Tg = 113 °C |
| Appearance | Pale 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
Device Structure(s)
| Device structure | ITO (50 nm)/HAT-CN (10 nm)/TAPC (40 nm)/mMCP (10 nm)/3 wt% BOBS-Z*:mCBP-CN (30 nm)/PPF (10 nm)/B3PyPB (30 nm)/Liq (1 nm)/Al (100 nm) [2] |
|---|---|
| Colour |
 Blue |
| Max Current Efficiency | 15.7 cd/A |
| Max. Power Efficiency | 24.2 Im/W |
| Max. EQE | 24.2% |
| Device structure | ITO (50 nm)/HAT-CN (10 nm)/TAPC (40 nm)/mMCP (10 nm)/3 wt% BSBS-Z*:mCBP-CN (30 nm)/PPF (10 nm)/B3PyPB (30 nm)/Liq (1 nm)/Al (100 nm) [2] |
|---|---|
| Colour |
Blue |
| Max Current Efficiency | 18.7 cd/A |
| Max. Power Efficiency | 20.2 Im/W |
| Max. EQE | 24% |
| Device structure | ITO (50 nm)/HAT-CN (10 nm)/TAPC (40 nm)/mMCP (10 nm)/3 wt% ν-DABNA*:mCBP-CN (30 nm)/PPF (10 nm)/B3PyPB (30 nm)/Liq (1 nm)/Al (100 nm) [2] |
|---|---|
| Colour |
Blue |
| Max Current Efficiency | 21.4 cd/A |
| Max. Power Efficiency | 22.1 Im/W |
| Max. EQE | 22.7% |
| Device structure | ITO/BPBPA* : HATCN (40 nm : 30%)/BPBPA (10 nm)/PCZAC(10 nm)/mCBPCN:oCBP:CNIr (30 nm:50%:10%)/26DBFPTPy* (5 nm)/ZADN (20 nm)/LiF (1.5 nm)/Al (200 nm) [3] |
|---|---|
| Colour |
Blue |
| Max Current Efficiency | 42.0 cd/A |
| Max. Power Efficiency | 43.9 Im/W |
| Max. EQE | 24.1% |
| Device structure | ITO/BPBPA* : HATCN (40 nm : 30%)/BPBPA (10 nm)/PCZAC(10 nm)/mCBPCN:oCBP:CNIr (30 nm:50%:10%)/26DBTPTPy* (5 nm)/ZADN (20 nm)/LiF (1.5 nm)/Al (200 nm) [3] |
|---|---|
| Colour |
Blue |
| Max Current Efficiency | 41.0 cd/A |
| Max. Power Efficiency | 42.7 Im/W |
| Max. EQE | 23.6% |
| Device structure | ITO/BPBPA* : HATCN (40 nm : 30%)/BPBPA (10 nm)/PCZAC(10 nm)/mCBPCN:oCBP:CNIr (30 nm:50%:10%)/BmPyPB (5 nm)/ZADN (20 nm)/LiF (1.5 nm)/Al (200 nm) [3] |
|---|---|
| Colour |
Blue |
| Max Current Efficiency | 39.1 cd/A |
| Max. Power Efficiency | 40.9 Im/W |
| Max. EQE | 22.3% |
*For chemical structure information, please refer to the cited references.
Pricing
| Grade | Order Code | Quantity | Price |
|---|---|---|---|
| Sublimed (>99.0% purity) | M2345A1 | 100 mg | £260 |
| Sublimed (>99.0% purity) | M2345A1 | 250 mg | £520 |
| Sublimed (>99.0% purity) | M2345A1 | 500 mg | £850 |
| Sublimed (>99.0% purity) | M2345A1 | 1 g | £1400 |
MSDS Documentation
mCBP-CN MSDS sheetLiterature and Reviews
- An Alternative Host Material for Long-Lifespan Blue Organic Light-Emitting Diodes Using Thermally Activated Delayed Fluorescence, S. Ihn et al., Adv. Sci., 1600502 (2017); DOI: 10.1002/advs.201600502.
- Achieving Ultimate Narrowband and Ultrapure Blue Organic Light-Emitting Diodes Based on Polycyclo-Heteraborin Multi-Resonance Delayed-Fluorescence Emitters, I Park et al., Adv. Mater., 34 (9), 2107951 (2022); DOI: 10.1002/adma.202107951.
- Novel hole blocking materials based on 2,6-disubstituted dibenzo[b,d]furan and dibenzo[b,d]thiophene segments for high-performance blue phosphorescent organic light-emitting diodes, S. Jang et al., J. Mater. Chem. C, 7, 826 (2019); DOI: 10.1039/c8tc04900a.
- Rigid Oxygen-Bridged Boron-Based Blue Thermally Activated Delayed Fluorescence Emitter for Organic Light-Emitting Diode: Approach towards Satisfying High Efficiency and Long Lifetime Together, D. Ahn et al., Adv. Optical Mater., 8 (11), 2000102 (2020); DOI: 10.1002/adom.202000102.
- Photophysics of TADF Guest−Host Systems: Introducing the Idea of Hosting Potential, K. Stavrou et al., ACS Appl. Electron. Mater., 2, 9, 2868–2881 (2020); DOI: 10.1021/acsaelm.0c00514.
To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.