Description

N,N'-Di(4-Biphenylyl)-N,N'-Diphenylbenzidine is a high-purity organic semiconductor material and hole-transport compound. This compound matters for its excellent charge carrier mobility and thermal stability, which are critical for device performance and longevity. It is primarily needed by manufacturers in the organic light-emitting diode (OLED) and organic photovoltaic (OPV) industries for use in display panels and energy conversion layers.

Application

• Hole-Transport Layer (HTL) in OLED devices for displays and lighting.
• Charge-Generation Layer (CGL) in tandem OLED structures.
• Key component in organic photoconductors (OPCs) for photocopiers and laser printers.
• As a p-type semiconductor material in organic thin-film transistors (OTFTs).
• Used in research and development of perovskite solar cells as a hole-transport material.
• Employed in the synthesis of more complex organic electronic materials and dyes.

Basic Information

Product Name	N,N'-Di(4-Biphenylyl)-N,N'-Diphenylbenzidine
CAS No.	134008-76-7
Molecular Formula	C48H34N2
Molecular Weight	638.80 g/mol
Synonyms	BPB; BPB-4; N,N'-Bis(4-biphenylyl)-N,N'-diphenylbenzidine; N,N'-Di([1,1'-biphenyl]-4-yl)-N,N'-diphenyl-[1,1'-biphenyl]-4,4'-diamine; TPD Derivative; 4,4'-Bis[N,N-bis(4-biphenylyl)amino]biphenyl; Hole Transport Material BPB; CAS 134008-76-7
EINECS	Contact for details

Quality Control

Our N,N'-Di(4-Biphenylyl)-N,N'-Diphenylbenzidine is produced under strict quality management systems to ensure batch-to-batch consistency for electronic applications. Each lot undergoes rigorous analytical testing, including HPLC for purity and spectroscopic methods for identity confirmation. Certificates of Analysis (COA) detailing all specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at room temperature (15-25°C) under an inert atmosphere (e.g., nitrogen or argon) to prevent oxidation. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light yellow powder or crystals
Identification (IR)	Conforms to reference spectrum
Purity (HPLC)	≥ 99.0% (Area %)
Melting Point	285 - 295 °C
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.