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mCBP-CN CAS 1327163-09-6
Product Code M2345A1-100mg
Price $338 ex. VAT
$ USD

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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 1327163-09-6
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.

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