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Product Code M2251B1-250mg
Price $300 ex. VAT

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2,3,5,6-tetrakis(3,6-di-tert-butylcarbazol-9-yl)-1,4-dicyanobenzene (4CzTPN-tBu) is the t-butylated derivative of 4CzTPN and it is sterically hindered with eight bulky tert-butyl peripheral end groups. Also due to the tert-butyl peripheral end groups, it becomes more soluble in most of the common organic solvents which makes all solution processing device possible.

4CzTPN-tBu as orange emitting layer, when blended in sky-blue delayed fluorescence molecule (4-(spiro[acridine-9,9’-fluoren]−10-yl)phenyl)(9-(3,5-di(carbazol-9-yl)phenyl)carbazol-3-yl)methanone (TCP-BP-SFAC) host, achieved record high power efficiency (PE) of 130.7 lm W-1, due to the balanced ambipolar transportation and high solid-state efficiency of TCP-BP-SFAC, and the effectively alleviated exciton quenching caused by the electron-trapping effect of 4CzTPN-tBu [1].

4CzTPN-tBu is an isomer to 4CzPN-tBu and 4CzIPN-tBu.

General Information

CAS Number 2153433-46-4
Full Name 2,3,5,6-tetrakis(3,6-di-tert-butylcarbazol-9-yl)-1,4-dicyanobenzene
Synonyms 4CzTPN-Bu, 4CzTPNBu
Chemical Formula C88H96N6
Molecular Weight 1237.74 g/mol
Absorption λmax 282 nm in toluene
Fluorescene λem 565 nm in toluene
HOMO/LUMO HOMO = 5.50 eV, LUMO = 3.30 eV [1]
Classification / Family Carbazole derivatives, Terephthalonitriles, TADF materials, Orange to red dopant materials, Sublimed materials

Chemical Structure

4cztpn-tbu chemical structure, 2153433-46-4
Chemical Structure of 2,3,5,6-tetrakis(3,6-di-tert-butylcarbazol-9-yl)-1,4-dicyanobenzene (4CzTPN-tBu), CAS 2153433-46-4

Product Details

Purity Unsublimed >98.0% (1H NMR)
Melting Point N/A
Appearance Orange powder/crystals

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

Device Structure

Device Structure ITO/HATCN (5 nm)/TAPC (50 nm)/TcTa (5 nm)/mCP (5 nm)/TCP-BP-SFAC (9 nm)/1 wt% 4CzTPNBu: TCP-BP-SFAC (5 nm)/TCP-BP-SFAC (6 nm)/PPF (5 nm)/TmPyPB (40 nm)/LiF (1 nm)/Al [1]
Colour white light emitting device  White
Max. Current Efficiency 104.2 cd/A
Max. EQE 31.1%
Max. Power Efficiency 130.7 Im/W

Device Structure ITO/MoO3/NPB/mCP/PADPO:DMAC-DPS:4CzTPN-Bu/PADPO/Bphen/LiF/Al [2]
Colour white light emitting device  White
Max. Current Efficiency 63.7 cd/A
Max. EQE 20.3 %
Max. Power Efficiency 67.8 Im/W

Device structure ITO/HATCN/TAPC/DBP:TCTA/4CzTPNBu:BDMAC-XT:CBP/TCTA/DCP-BP-DPAC:PPF/PPF/TmPyPB/LiF/Al [3]
Colour white light emitting device  White
Max. Current Efficiency 53.3 cd/A
Max. EQE 23.0 %
Max. Power Efficiency 64.4 Im/W

MSDS Documentation

4CzTPN-tBu MSDS4CzTPN-tBu MSDS sheet

Pricing

Grade Order Code Quantity Price
Sublimed (>99.0% purity) M2251A1 250 mg £240
Sublimed (>99.0% purity) M2251A1 500 mg £390
Sublimed (>99.0% purity) M2251A1 1 g £620

Literature and Reviews

  1. Achieving Balanced Electrical Performance of Host Material through Dual N-P=O Resonance Linkage for Efficient Electroluminescence, H. Li et al., ACS Appl. Mater. Interfaces, 14 (22), 25834–25841 (2022); DOI: 10.1021/acsami.2c02745.
  2. Achieving High Electroluminescence Efficiency and High Color Rendering Index for All‐Fluorescent White OLEDs Based on an Out‐of‐Phase Sensitizing System, H. Liu et al., Adv. Funct. Mater., 31, 2103273 (2021); DOI: 10.1002/adfm.202103273.
  3. Symmetrical spirobi[xanthene] based locally asymmetrical phosphine oxide host for low-voltage-driven highly efficient white thermally activated delayed fluorescence diodes, R. Du et al., Chem. Eng. J., 392, 124870 (2020); DOI: 10.1016/j.cej.2020.124870.
  4. Optimizing energy transfer for highly efficient single-emissive-layer white thermally activated delayed fluorescence organic light-emitting diodes, F. Gao et al., Opt. Lett., 44 (23), 5727-5730 (2019), DOI: 10.1364/OL.44.005727.
  5. Charge‐Transfer Exciton Manipulation Based on Hydrogen Bond for Efficient White Thermally Activated Delayed Fluorescence, J. Sun et al., Adv. Funct. Mater., 30 (9), 201908568 (2019); DOI: 10.1002/adfm.201908568.
  6. TADF molecules with π-extended acceptors for simplified high-efficiency blue and white organic light-emitting diodes, X. Hong et al., Chem., 8 (6), 1705-1709 (2022); DOI: 10.1016/j.chempr.2022.02.017.
  7. Direct evidence of dopant-dopant synergism in efficient single-emissive-layer white thermally activated delayed fluorescence, C. Duan et al., Nano Energy, 89 (A), 106358 (2021); DOI: 10.1016/j.nanoen.2021.106358.
  8. Thermally activated delayed fluorescence (TADF) organic molecules for efficient X-ray scintillation and imaging, W. Ma et a., Nat. Mater. 21, 210–216 (2022); DOI: 0.1038/s41563-021-01132-x.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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