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Description
TCI D4253 N,N'-Di-2-naphthyl-N,N'-diphenylbenzidine (CAS 139255-17-7) is an aromatic diamine compound built on a biphenyl (benzidine) framework substituted with naphthyl and phenyl groups. In the field of electronic materials it is known as a hole-transport material for OLED devices. Triarylamine compounds of this class form the backbone of the hole-transport layer in organic light-emitting diodes, because they are able to accept positive charge from the electrode and pass it onward toward the emissive layer. In laboratory research, this material is used to build multilayer device structures and to study how layer arrangement influences light-emission performance.
The properties that make this compound a preferred choice are the combination of an extended aromatic conjugated system, electron-rich nitrogen atoms, and a large, rigid molecular structure. The naphthyl groups at the 2-position broaden the conjugated system and add molecular rigidity, which helps the material form stable amorphous thin films that do not readily crystallize while the device is operating. This morphological stability matters because crystallization of the thin film is one of the main causes of device performance degradation. In addition, the triarylamine framework provides the hole mobility needed for charge transport within the device stack.
In Indonesian laboratories, this material is typically handled in university and institutional research groups working on organic electronics and thin-film device fabrication. It is used at small research scale for preparing multilayer OLED test structures, for comparative studies of hole-transport layers, and for teaching and characterization work in materials science programs. Because it is a research-grade organic electronic material, it is normally stored and dispensed under controlled laboratory conditions alongside other thin-film deposition materials.
Laboratory Applications
Hole-transport layer fabrication in OLED devices — the triarylamine framework accepts and conducts positive charge from the electrode toward the emissive layer, which is the core function of this layer.
Multilayer OLED device construction — researchers use this material as one defined layer in a stacked structure to study how the arrangement of layers affects overall light-emission performance.
Amorphous thin-film studies — the rigid, bulky molecular structure with 2-naphthyl substituents supports formation of stable amorphous films that resist crystallization during device operation.
Device stability and degradation research — because thin-film crystallization is a leading cause of performance loss, this compound serves as a reference material for morphological stability investigations.
Organic electronic materials characterization — the extended aromatic conjugation and electron-rich nitrogen centers make it a useful model triarylamine for charge-transport and structure-property studies.
Specifications
Brand: TCI
CAS Number: 139255-17-7
Chemical name: N,N'-Di-2-naphthyl-N,N'-diphenylbenzidine
Pack sizes: available in standard TCI research-scale packaging; please confirm the required pack size when ordering
Storage: store under the conditions stated on the manufacturer's label and safety data sheet
Handling and Storage
Store this material in its original tightly closed container, kept in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and incompatible chemicals. Amber glass or the manufacturer's supplied container is suitable, since organic electronic materials are best protected from light and moisture. Handle in a fume hood using gloves, safety glasses, and a laboratory coat, and avoid generating dust when weighing or transferring the solid. Keep containers clearly labelled and close them promptly after use to limit exposure to air and humidity. Always review the manufacturer's safety data sheet before handling, and dispose of residues and contaminated materials according to the applicable laboratory chemical waste procedures.
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