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Product Code M2221B1-250mg
Price £220 ex. VAT

A highly efficient TADF green emitter

As an alternative choice to 4CzIP and 4CzTPN TADF green emitters in TADF-OLED devices.


Specifications | Pricing and Options | MSDS | Literature and Reviews


4CzPN is one of three isomers (including 4CzTPN and 4CzIPN) which belong to the carbazolyl benzonitriles (CBC) family. CBC family members are well known, highly efficient thermally activated delayed fluorescence (TADF) materials.

The carbazolyl groups are located next and opposite to the nitrile groups, electrons in 4CzPN orbitals are supposedly more delocalized than its isomers. However, with four bulky carbazolyl groups next to each other, the steric hindrance can reduce the conjugation of the carbazolyl groups to the centre benzene ring.

General Information


CAS Number 1416881-51-0
Full Name 3,4,5,6-tetrakis(carbazol-9-yl)-1,2-dicyanobenzene
Synonyms 1,2,3,4-tetrakis(carbazol-9-yl)-5,6-dicyanobenzene
Chemical Formula C56H32N6
Molecular Weight 788.27 g/mol
Absorption λmax 315, 325, 364 nm in toluene
Fluorescence λem 528 nm in toluene
HOMO/LUMO HOMO = 5.83 eV, LUMO = 3.38 eV; T1=2.50 eV [1]
Classification / Family Carbazole, TADF materials, Green dopant materials, Sublimed materials

Chemical Structure


4czpn chemical structure, 1416881-51-0
Chemical Structure of 3,4,5,6-tetrakis(carbazol-9-yl)-1,2-dicyanobenzene (4CzPN), CAS 1416881-51-0

Product Details


Purity Unsublimed >98.0% (HPLC), Sublimed >99% (HPLC)
Melting Point >360 °C (lit.)
Appearance Orange powder/crystals

Device Structure(s)


Device Structure ITO/MoO3 (8 nm)/TAPC (60 nm)/TCTA (5 nm)/FIrpic (0.5 nm)/SPA-TXO2* : 4CzPN(25 nm)/TPBi (60 nm)/LiF (0.5 nm)/Al (100 nm) [1]
Colour green Green
Max. Current Efficiency 43.5 cd/A
Max. EQE 13.1%
Max. Power Efficiency 42.6 Im/W

Device Structure ITO/MoO3 (8 nm)/TAPC (60 nm)/TCTA (5 nm)/FIrpic (0.5 nm)/o-CzTHZ* : 4CzPN(25 nm)/TPBi (60 nm)/LiF (0.5 nm)/Al (100 nm) [1]
Colour green Green
Max. Current Efficiency 61.1 cd/A
Max. EQE 17.9%
Max. Power Efficiency 50.5 Im/W

Device Structure ITO/HATCN (10 nm)/Tris-PCz (35 nm)/10 wt.% 4CzPN:mCBP (G-EML) (3 nm)/6 wt.% 4CzPN:2 wt.% 4CzTPN-Ph:mCBP (R-EML) (2 nm)/10 wt.% 3CzTRZ:PPT (B-EML) (10 nm)/PPT (50 nm)/LiF (0.8 nm)/Al (100 nm) [2]
Colour white White
Max. Power Efficiency 30.3 lm W1
Max. Current Efficiency 38.6 cd/A
Max. EQE 17.6%

Device Structure ITO/HATCN (10 nm)/Tris-PCz (35 nm)/10 wt.% 4CzPN:mCBP (G-EML) (5 nm)/6 wt.% 4CzPN:2 wt.% 4CzTPN-Ph:mCBP (R-EML) (4 nm)/10 wt.% 3CzTRZ:PPT (B-EML) (6 nm)/PPT (50 nm)/LiF (0.8 nm)/Al (100 nm) [2]
Colour white White
Max. Power Efficiency 34.1 lm W1
Max. Current Efficiency 45.6 cd/A
Max. EQE 17.0%

Device Structure ITO (95 nm)/HATCN (10 nm)/ TAPC (45 nm)/TCTA (5 nm)/0.4 wt% TBRb: 6 wt% 4CzPN (8 nm)/0.8 wt% TBRb: 10 wt% 4CzPN: mCBP (4 nm)/40 wt% Bepp2: mCBP (5 nm)/Bepp2 (3 nm)/5 wt% DSA-Ph*: MADN (8 nm)/TmPyPB (50 nm)/LiF (1 nm)/Al (100 nm) [3]
Colour white White
Max Current Efficiency 48.9 cd/A
Max EQE 15.1%
Max. Power Efficiency 47.4 lm W-1

Device Structure ITO (95 nm)/ HATCN (10 nm)/ NPB (40 nm)/ TCTA (10 nm)/ 0.8 wt.% TBRb: 10wt.% 4CzPN: mCBP (12 nm)/ 30 wt.% Bepp2: mCBP (5 nm)/ Bepp2 (3 nm)/ 5 wt.% DPAVBi:MADN (8 nm)/ Bepp2 (50 nm)/ LiF (1 nm)/ Al (100 nm) [3]
Colour white White
Max. Power Efficiency 37.6 lm W1
Max. Current Efficiency 38.1 cd/A
Max. EQE 11.9%

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

Pricing


Grade Order Code Quantity Price
Unsublimed (>98.0% purity) M2221B1 250 mg £220
Unsublimed (>98.0% purity) M2221B1 500 mg £360
Unsublimed (>98.0% purity) M2221B1 1 g £580
Sublimed (>98.0% purity) M2221A1 250 mg £370
Sublimed (>98.0% purity) M2221A1 500 mg £620
Sublimed (>98.0% purity) M2221A1 1 g £1050

MSDS Documentation


4CzPN4CzPN MSDS Sheet

Literature and Reviews


  1. A new way towards high-efficiency thermally activated delayed fluorescence devices via external heavy-atom effect, W. Zhang et al., Sci. Rep., 6, 30178 (2016); doi: 10.1038/srep30178.
  2. High-efficiency white organic light-emitting diodes using thermally activated delayed fluorescence, J. Nishide et al., Appl. Phys. Lett. 104, 233304 (2014); doi: 10.1063/1.4882456.
  3. Exciton-Adjustable Interlayers for High Efficiency, Low Efficiency Roll-Off, and Lifetime Improved Warm White Organic Light-Emitting Diodes (WOLEDs) Based on a Delayed Fluorescence Assistant Host, Z. Wang et al., Adv. Funct. Mater., 28, 1706922 (2018); DOI: 10.1002/adfm.201706922.
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