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46DCzPPm (CzPhPy)

Product Code M2354A1
Price $413.00 ex. VAT

46DCzPPm, bipolar host or hole blocking material

High purity (>99% sublimed) 46DCzPPm available in quantities from 250 mg to 1 g

Like 26DCzPPy, 46DCzPPm (also know as CzPhPy) has a bipolar structure with two electron rich end carbazole units attached to an electron deficient biphenylpyrimidine center unit. It has one extra nitrogen unit than 26DCzPPy.

46DCzPPm is normally used as bipolar host material for blue, red and green phosphorescent OLED devices. An extremely low driving voltage of 3.9 V was achieved using 46DCzPPm as the bipolar host material, and FIrPic as the blue triplet emitter. In the device, an n-doping electron-transport layer consisting of Cs2CO3-doped  46DCzPPm and a p-doping hole-transport layer consisting of MoO3-doped 46DCzPPm were constructed [2].

With a deep HOMO energy level (6.19 eV), 46DCzPPm can also be employed as an efficient hole blocking layer material.

General Information

CAS number 1262678-77-2
Chemical formula C40H26N4
Molecular weight 562.68 g/mol
Absorption λmax 292 nm (in DCM)
Fluorescence λem 476 nm (in DCM)
HOMO/LUMO HOMO = 6.19 eV, LUMO = 3.06 eV; ET = 2.64 eV [1]
Full name 4,6-Bis(3-(9H-carbazol-9-yl)phenyl)pyrimidine
Synonyms CzPhPy, 9Cz46Pm
Classification / Family Carbazole derivatives, Host materials, PHOLED host materials, Hole-blocking layer, Sublimed materials, OLEDs, Organic electronics

Product Details

Purity Sublimed* >99.0%
Melting point Tm = 175 °C (Tg = 107 °C, Td = 466 °C)
Colour White Powder

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

46DCzPPM chemical structure
Chemical structure of 4,6-Bis(3-(9H-carbazol-9-yl)phenyl)pyrimidine (46DCzPPm), CAS 1262678-77-2

Device Structure(s)

Device structure ITO/HATCN (5 nm)/NPB (30 nm)/TCTA (10 nm)/mCPBC:30 wt% 33PCX:1 wt% v-DABNA (30 nm)/46DCzPPm (10 nm)/DPyPA:Liq (1:1, 30 nm)/LiF (0.5 nm)/Al (150 nm) [2]
Colour blue light emitting device Blue
Max. EQE 27.5%
Max. Power Efficiency 39.7 lm W1
Device structure ITO/HATCN (5 nm)/NPB (30 nm)/TCTA (10 nm)/mCPBC:30 wt% 23PCX:1 wt% v-DABNA (30 nm)/46DCzPPm (10 nm)/DPyPA:Liq (1:1, 30 nm)/LiF (0.5 nm)/Al (150 nm) [2]
Colour blue light emitting device Blue
Max. EQE 25.2%
Max. Power Efficiency 53.5 lm W1


 Grade Order Code Quantity Price
Sublimed (>99%) M2354A1 250 mg  £330
Sublimed (>99%) M2354A1 500 mg £520
Sublimed (>99%) M2354A1 1 g £850

MSDS Documentation

46DCzPPm MSDS46DCzPPm MSDS sheet

Literature and Reviews

  1. Highly Efficient and Stable Blue Organic Light-Emitting Diodes based on Thermally Activated Delayed Fluorophor with Donor-Void-Acceptor Motif, D. Zhang et al., Adv. Sci., 9, 2106018 (2022); DOI: 10.1002/advs.202106018.
  2. Efficient Low-Driving-Voltage Blue Phosphorescent Homojunction Organic Light-Emitting Devices, C. Cai et al., Jpn. J. Appl. Phys. 50, 040204 (2011); DOI:10.1143/jjap.50.040204.
  3. RGB Phosphorescent Organic Light-Emitting Diodes by Using Host Materials with Heterocyclic Cores: Effect of Nitrogen Atom Orientations, S. Su et al., Chem. Mater., 23, 2, 274–284 (2011); DOI: 10.1021/cm102975d.
  4. Pyridine-Containing Electron-Transport Materials for Highly Efficient Blue Phosphorescent OLEDs with Ultralow Operating Voltage and Reduced Efficiency Roll-Off, H. Ye et al., Adv. Funct. Mater., 24 (21); 3268-3275 (2014); DOI: 10.1002/adfm.201303785.
  5. Color-Tunable All-Fluorescent White Organic Light-Emitting Diodes with a High External Quantum Efficiency Over 30% and Extended Device Lifetime, C. Zhang et al., Adv. Mater., 2103102 (2021), DOI: 10.1002/adma.202103102.
  6. Approaching Nearly 40% External Quantum Efficiency in Organic Light Emitting Diodes Utilizing a Green Thermally Activated Delayed Fluorescence Emitter with an Extended Linear Donor–Acceptor–Donor Structure, Y. Chen et al., Adv. Mater., 33 (44), 2103293 (2021); DOI: 10.1002/adma.202103293.
  7. High-efficiency red, green and blue phosphorescent homojunction organic light-emitting diodes based on bipolar host materials, C Cai et al., Org. Electronics, 12(5), 843-850 (2011);DOI:10.1016/j.orgel.2011.01.021.

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.

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