Description

α-Npd , N, N'-Bis(Naphthalen-1-Yl)-N,N'-Bis(Phenyl)-2,2-Dime is a high-purity organic semiconductor material belonging to the arylamine class. This compound is valued for its excellent hole-transporting properties and thermal stability, making it a critical component in advanced electronic devices. It is primarily needed by manufacturers in the organic light-emitting diode (OLED) and organic photovoltaic (OPV) industries for the development of high-efficiency displays and energy conversion systems.

Application

• As a hole-transport layer (HTL) material in OLED devices for displays and lighting.
• As a key charge-transport material in the active layer of organic solar cells (OPVs).
• As a functional dopant or host material in electrophotographic photoreceptors and xerographic applications.
• In organic field-effect transistors (OFETs) as a semiconductor layer.
• As a research chemical for developing new organic electronic materials and studying charge transport mechanisms.
• For use in perovskite solar cells as an interfacial or transport layer to enhance efficiency and stability.

Basic Information

Product Name	α-Npd , N, N'-Bis(Naphthalen-1-Yl)-N,N'-Bis(Phenyl)-2,2-Dime
CAS No.	495416-60-9
Molecular Formula	C44H32N2
Molecular Weight	588.74 g/mol
Synonyms	N,N'-Di(1-naphthyl)-N,N'-diphenylbenzidine; N,N'-Bis(1-naphthyl)-N,N'-diphenylbenzidine; α-NPD; NPD; 4,4'-Bis[N-(1-naphthyl)-N-phenylamino]biphenyl; 2,2'-Dimethyl-N,N'-di-1-naphthyl-N,N'-diphenylbenzidine; N,N'-Bis(naphthalen-1-yl)-N,N'-bis(phenyl)benzidine
EINECS	Contact for details

Quality Control

Our α-Npd is produced under stringent conditions to ensure batch-to-batch consistency and high performance in electronic applications. Quality is verified through advanced analytical techniques including HPLC, NMR, and elemental analysis to guarantee a purity level typically exceeding 99.5% (HPLC). A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment.

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 greenish-yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 99.5%
Melting Point	285 - 295 °C
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Moisture Content (KF)	≤ 0.2%

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