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N,N'-Di-1-naphthyl-N,N'-diphenylbenzidine (NPB)

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N,N'-Di-1-naphthyl-N,N'-diphenylbenzidine (NPB) Basic information

Product Name:
N,N'-Di-1-naphthyl-N,N'-diphenylbenzidine (NPB)
Synonyms:
  • N,N'-Bis- (1-naphthalenyl)-N,N'-bis-phenyl-(1,1'-biphenyl)-4,4'-diamine
  • N,N'-BIS(NAPHTHALEN-1-YL)-N,N'-BIS(PHENYL)BENZIDINE
  • n,n'-di-[(1-naphthyl)-n,n'-diphenyl]-1,1'-biphenyl)-4,4'-diamine
  • NPB
  • NPD
  • N,N'-Bis(1-naphthyl)-N,N'-bis(phenyl)benzidine, 98%
  • ALPHA-NPB
  • ALPHA NAPHTHYLPHENYL BENZIDINE
CAS:
123847-85-8
MF:
C44H32N2
MW:
588.74
EINECS:
1312995-182-4
Product Categories:
  • oled materials
  • electronic
  • pharmacetical
  • Light yellow powder
  • fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, pharmaceutical
  • fine chemicals, specialty chemicals, intermediates, electronic chemical, organic synthesis, functional materials
  • OLED
Mol File:
123847-85-8.mol
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N,N'-Di-1-naphthyl-N,N'-diphenylbenzidine (NPB) Chemical Properties

Melting point:
279-283°C
Boiling point:
772.5±53.0 °C(Predicted)
Density 
1.213±0.06 g/cm3(Predicted)
storage temp. 
Inert atmosphere,Room Temperature
solubility 
Chloroform (Heated), DMSO (Slightly, Heated, Sonicated), Ethyl Acetate (Slightly)
pka
-0.08±0.50(Predicted)
form 
Powder
color 
Pale yellow
λmax
339nm(THF)(lit.)
InChIKey
IBHBKWKFFTZAHE-UHFFFAOYSA-N
SMILES
C1(C2=CC=C(N(C3=C4C(C=CC=C4)=CC=C3)C3=CC=CC=C3)C=C2)=CC=C(N(C2=C3C(C=CC=C3)=CC=C2)C2=CC=CC=C2)C=C1
CAS DataBase Reference
123847-85-8(CAS DataBase Reference)
Absorption
λmax = 339 nm
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Safety Information

Safety Statements 
24/25
WGK Germany 
3
HS Code 
29215900
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N,N'-Di-1-naphthyl-N,N'-diphenylbenzidine (NPB) Usage And Synthesis

Description

N,N′-Di(1-naphthyl)-N,N′-diphenyl-(1,1′-biphenyl)-4,4′-diamine, also known as NPB or NPD, has been used intensively in OLEDs and other organic electronic devices such as polymer photovoltaics (OPV) and perovskite solar cells for its outstanding hole transport capability. 
NPB is considered as one of the best materials within its competition, and has become the most common-used material in OLEDs' application. This is due to its increased Tg up to 95 °C, which enhances device morphology and is beneficial for device longevity.

Chemical Properties

Light yellow to yellow powder

Uses

N,N'-Bis- (1-naphthalenyl)-N,N'-bis-phenyl-(1,1'-biphenyl)-4,4'-diamine is used as a hole transporting material for OLED devices.

General Description

TGA/DSC Lot specific traces available upon request

N,N'-Di-1-naphthyl-N,N'-diphenylbenzidine (NPB)Supplier

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