2CzPN is a highly efficient TADF sky blue emitter with two electron-donating carbazolyl moieties attached to the electron-withdrawing dicyanobenzene ring. The carbazolyl units are noticeably distorted from the dicyanobenzene plane by steric hindrance, leading to a small ΔEST of 0.09 eV.
When compared with 4CzIPN, 2CzPN has fewer carbazolyl groups which reduces its electron-donating ability and produces a shift of the emission maximum to shorter wavelength (473 nm).
General Information
CAS number
1416881-50-9
Full name
4,5-Bis(carbazol-9-yl)-1,2-dicyanobenzene
Chemical formula
C32H18N4
Molecular weight
458.51 g/mol
Absorption
λmax 380 nm in toluene
Fluorescence
λmax 473 nm in toluene
HOMO/LUMO
HOMO = 6.2 eV, LUMO = 3.5 eV; T1 = 2.5 eV [1]
Synonyms
1,2-Bis(carbazol-9-yl)-4,5-dicyanobenzene
Classification / Family
Blue emitting layer materials, Blue phosphorescent host materials, TADF materials.
*For chemical structure information, please refer to the cited references
Pricing
Grade
Order Code
Quantity
Price
Sublimed (>99% purity)
M2181A1
100 mg
£208.00
Sublimed (>99% purity)
M2181A1
250 mg
£416.00
Sublimed (>99% purity)
M2181A1
500 mg
£691.00
Sublimed (>99% purity)
M2181A1
1 g
£1180.00
MSDS Documentation
2CzPN MSDS sheet
Literature and Reviews
Highly efficient organic light-emitting diodes from delayed fluorescence, H. Uoyama et al., Nature, 492, 234-240 (2012); doi: 10.1038/nature11687.
High-efficiency phosphorescent organic light-emitting devices with low efficiency roll-off using a thermally activated delayed fluorescence material as host, Y. Qi et al., Org. Electron., 36, 185-191 (2016); DIO: 10.1016/j.orgel.2016.05.043.
Efficient Quantum-Dot Light-Emitting Diodes Employing Thermally Activated Delayed Fluorescence Emitters as Exciton Harvesters, Y. Zhang et al., ACS Appl. Mater. Interfaces, 10, 7435−7441 (2018); DOI: 10.1021/acsami.7b16579.
Exciplex Organic Light-Emitting Diodes with Nearly 20% External Quantum Efficiency: Effect of Intermolecular Steric Hindrance between the Donor and Acceptor Pair, T. Wu et al, ACS Appl. Mater. Interfaces (2019); DOI: 10.1021/acsami.9b04365.
Highly efficient and color-stable hybrid warm white organic light-emitting diodes using a blue material with thermally activated delayed fluorescence, D. Zhang et al, J. Mater. Chem. C, 2, 8191 (2014); DOI: 10.1039/c4tc01289e.
Bipolar host materials for high-efficiency blue phosphorescent and delayed-fluorescence OLEDs, W. Li et al., J. Mater. Chem. C, 3, 12529 (2015); DOI: 10.1039/c5tc02997j.
To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.