mCBP-CN

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

Product Details

*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials for OLED devices page.

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

MSDS Documentation

mCBP-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. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.