FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on info@ossila.com, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.


Product Code M2345A1-100mg
Price $325 ex. VAT

Quality assured

Expert support

Volume discounts

Worldwide shipping

Fast and secure


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

chemical structure of mCBP-CN
Chemical structure of 3,3′-di(carbazol-9-yl)-5-cyano-1,1′-biphenyl (mCBP-CN)

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 light emitting device 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 light emitting device 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 light emitting device 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 light emitting device 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 light emitting device 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 light emitting device 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 MSDSmCBP-CN MSDS sheet

Literature and Reviews

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.

Return to the top