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Product Code M2219A1-250mg
Price £420 ex. VAT

5CzBN, light-blue TADF fluorescence emitter

High-purity (>99.0%) and available online for priority dispatch

5CzBN, penta-carbazolylbenzonitrile, is sterically hindered due to the five bulky electron-donating carbazolyl groups on the benzene ring struggling for space. It is a light-blue TADF fluorescence emitter widely used for highly efficient TADF-OLED devices.

General Information

CAS number 1469700-24-0
Full name 2,3,4,5,6-penta(carbazol-9-yl)benzonitrile
Synonyms 5CzCN, 2,3,4,5,6-penta(9H-carbazol-9-yl)benzonitrile
Chemical formula C67H40N6
Molecular weight 929.1 g/mol
Absorption λmax 325 nm, 348 nm and 420 nm in DCM
Fluorescence λem 488 nm in toluene
HOMO/LUMO HOMO = 5.55 eV, LUMO = 2.74 eV, T1 = 2.68 eV [1]
Classification / Family Carbazole, Phthalonitrile, TADF materials, Blue dopant materials, Sublimed materials

Product Details

Purity Unsublimed >98%; Sublimed >99.0% (1H NMR)
Melting point Tg = 318 °C (lit.)
Appearance Yellow 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 2,3,4,5,6-penta(carbazol-9-yl)benzonitrile (5CzBN).

Device Structure(s)

Device structure ITO/HATCN (5 nm)/NPB (30 nm)/TCTA (10 nm)/mCBP:5CzBN (20 wt%) (30 nm)/DpyPA:Liq (1:1, 30 nm)/LiF (0.5 nm)/Al (150 nm) [2]
Colour Blue blue light emitting device
Max. EQE 16.7%
Max. Power Efficiency 40.0 Im/W
Device structure ITO (100 nm)/HATCN (10 nm)/TrisPCz (30 nm)/mCBP (10 nm)/15wt%-5CzBN:mCBP (30 nm)/T2T (10 nm)/BPyTP2 (40 nm)/LiF (0.8 nm)/Al (100 nm) [3]
Colour Blue blue light emitting device
Max. EQE 18.0%
Max. Power Efficiency 49.9 Im/W

*For chemical structure information, please refer to the cited references.

MSDS Documentation



Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2219A1 250 mg £420
Sublimed (>99.0% purity) M2219A1 500 mg £700
Sublimed (>99.0% purity) M2219A1 1 g £1150
Unsublimed (>98.0% purity) M2219B1 250 mg £260
Unsublimed (>98.0% purity) M2219B1 500 mg £420
Unsublimed (>98.0% purity) M2219B1 1 g £660

Literature and Reviews

  1. Recent progress of green thermally activated delayed fluorescent emitters, Y. Im et al., J. Info. Display, 18 (3), 101-117 (2017); DOI: 10.1080/15980316.2017.1333046.
  2. Sterically shielded blue thermally activated delayed fluorescence emitters with improved efficiency and stability, D. Zhang et al., Mater. Horiz., 3, 145-151 (2016); doi: 10.1039/C5MH00258C.
  3. Excited state engineering for efficient reverse intersystem crossing, H. Noda et al., Sci. Adv., 4:eaao6910 (2018); DOI: 10.1126/sciadv.aao6910.
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