1,3,5-Tris(1-phenyl-1H-benzimidazol-2-yl)benzene Chemical Properties

Melting point:

272-277°C

Density 

1.26

storage temp. 

Keep in dark place,Sealed in dry,Room Temperature

solubility 

DMSO (Slightly), Methanol (Slightly)

pka

4.25±0.10(Predicted)

form 

powder

λmax

302nm(CH2Cl2)(lit.)

color 

White Powder

Absorption

λmax?305 nm?in THF

Safety Information

Risk Statements 

36/37/38

Safety Statements 

26-36/37/39

HS Code 

29339900

1,3,5-Tris(1-phenyl-1H-benzimidazol-2-yl)benzene Usage And Synthesis

Applications

2,2',2"-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole), TPBi, being electron deficient, is normally used as electron transport layer material in optoelectronic devices. Having a low LUMO energy level (2.7 eV), TPBi is also used as host material for both fluorescent and phosphorescent light emitting systems.
In some cases, TPBI is used to replace CBP (HBL)/Alq3 (ETL) to simplify the device structure for its excellent electron transporting and also its hole blocking abilities with very deep HOMO energy level (HOMO = 6.2/6.7 eV). It has also been reported that TPBi could be used as electron injection layer material between Alq3 (ETL) and Cs2O3/Al (electrode). It suggested that TPBI thin layer at the Alq3/Cs2O3 interface facilitates the electron injection and is also involved with hole-blocking and exciton confinement.

Description

2,2',2''-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole), TPBi, being electron deficient, is normally used as electron transport layer material in optoelectronic devices.?Having a low LUMO energy level (2.7 eV), TPBi is also used as host material for both fluorescent and phosphorescent light emitting systems.

Uses

Used in OLED′s devices as electron transport and exciton blocking materials.

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