Order Code: M781
MSDS sheet


(excluding Taxes)


General Information

CAS number 1013405-25-8
Chemical formula C41H27N3
Molecular weight 561.67 g/mol
Absorption λmax 307 nm, 317 nm (in CH2Cl2)
Fluorescence λem 347 nm (in CH2Cl2)
HOMO/LUMO HOMO = 6.18 eV, LUMO = 2.75 eV [1]
Synonyms 3,5-bis(3-(9H-carbazol-9-yl)phenyl)pyridine
Classification / Family Carbazole derivatives, Bipolar charge transport layer materials, Phosphorescent host materials, OLEDs, Organic electronics


Product Details

Purity >98.5%
Melting point TGA > 290 °C (0.5% weight loss)
Colour White powder/crystals


Chemical Structure

chemical structure of 35dczppy
Chemical Structure of 3,5-bis(3-(9H-carbazol-9-yl)phenyl)pyridine (35DCzPPy); CAS No. 1013405-25-8; Chemical Formula C41H27N3.



Combining a carbazole electron donor with high triplet energy, and a pyridine electron acceptor with high electron affinity, 3,5-bis(3-(carbazol-9-yl)phenyl)pyridine (35DCzPPy) is one of the most common bipolar host materials used in organic light-emitting diodes.

35DCzPPy is an isomer of 26DCzPPy, differing in the position of functionalisations of the central pyridine ring. 35DCzPPy is more electron-rich, so 26DCzPPy has a more balanced hole and electron injection and transport than 35DCzPPy.

Bipolar host materials are the molecules composed of an electron-donating moiety, capable of mediating hole injection and transportation; and an electron-withdrawing moiety capable of mediating electron injection and transportation.

Device structure  ITO (130 nm)/35DCzPPy:MoO3 (30 nm)/35DCzPPy (10 nm)/ 35DCzPPy:12 wt.% FIrpic (30 nm)/35DCzPPy (10 nm)/ 35DCzPPy:Cs2CO3 (20 nm)/Al (80 nm) [1]
Colour Blue   blue
EQE @ 100 cd/m2 16.9%
Current Efficiency @ 1000 cd/m2 27.2 cd/A
Power Efficiency @ 1000 cd/m2 19.6 lm/W
Device structure  ITO/TPDPES*:TBPAH* (20nm)/3DTAPBP* (30nm)/35DCzPPy:11 wt % FIrpic (10nm)/TmPyPBP (40nm)/LiF (0.5 nm)/Al (100 nm) [2]
Colour Blue   blue
EQE @ 100 cd/m2 19.1%
Power Efficiency @ 100 cd/m2 34.6 lm/W
Device structure                                            ITO (130 nm)/35DCzPPy:MoO3 (30 nm)/35DCzPPy (10 nm)/35DCzPPy:10 wt.% Ir(ppy)(30 nm)/35DCzPPy (10 nm)/35DCzPPy:Cs2CO3 (20 nm)/Al (80 nm) [1]
Colour Green    green
EQE @ 100 cd/m2 1.5%
Power Efficiency @ 100 cd/m2 3.2 lm W1  
Device structure                                       ITO (130 nm)/35DCzPPy:MoO3 (30 nm)/35DCzPPy (10 nm)/35DCzPPy:4 wt.% Ir(piq)3 (30 nm)/35DCzPPy (10 nm)/35DCzPPy:Cs2CO3 (20 nm)/Al (80 nm) [1]
Colour                                  Red    red
EQE @ 100 cd/m2 7.0%
Power Efficiency @ 100 cd/m2 2.7 lm W1  

*For chemical structure informations please refer to the cited references.



hplc 35dczppy
HPLC trace of 3,5-bis[3-(9H-Carbazol-9-yl)phenyl]pyridine (35DCzPPy).


Literature and Reviews

  1. High-efficiency red, green and blue phosphorescent homojunction organic light-emitting diodes based on bipolar host materials, C. Cai et al., Org. Electronics 12, 843-850 (2011); doi:10.1016/j.orgel.2011.01.021.
  2. Pyridine-Containing Bipolar Host Materials for Highly Efficient Blue Phosphorescent OLEDs, S. Su et al., Chem. Mater., 20, 1691–1693 (2008); DOI: 10.1021/cm703682q.