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General information

  • Name: TAPC
  • Full name: 4,4′-Cyclohexylidenebis[N,N-bis(4-methylphenyl)benzenamine]
  • CAS number: 58473-78-2
  • Chemical formula: C46H46N2
  • Molecular weight: 626.87 g/mol
  • Absorption: λmax = 305 nm in THF
  • Photoluminescence: λmax = 414 nm in THF
  • HOMO/LUMO: HOMO = 5.5 eV, LUMO = 2.0 eV
  • Synonyms: 1,1-Bis[(di-4-tolylamino)phenyl]cyclohexane, Di-[4-(N,N-di-p-tolyl-amino)-phenyl]cyclohexane
  • Classification: Organic light-emitting diodes, Hole injection layer materials (HIL), Hole transport layer materials (HTL), Electron blocking layer materials (EBL), Host materials, TADF materials
  • Purity: Sublimed: >99.5%
  • Melting point: 186 °C
  • Appearance: White powder/crystals

TAPC: Pioneering Material for Advanced OLED Technologies

TAPC, known as 4,4′-Cyclohexylidenebis[N,N-bis(4-methylphenyl)benzenamine], with its CAS number 58473-78-2, is a leading compound in the OLED industry. Its chemical formula, C46H46N2, highlights its complex structure, making it a critical material for various OLED applications, including hole injection layers (HIL), hole transport layers (HTL), and electron blocking layers (EBL).

The Molecular Structure and Properties of TAPC

TAPC’s molecular design is crucial for its performance in OLEDs. Its structure, featuring two N,N-bis(4-methylphenyl)benzenamine groups linked by a cyclohexylidene ring, facilitates efficient electronic processes essential for OLED applications. The compound’s high HOMO level of 5.5 eV and lower LUMO level of 2.0 eV make it ideal for efficient hole injection and transport, crucial for high-performance OLED devices. Additionally, TAPC’s planar structure and electron-blocking capabilities enhance the overall efficiency and lifespan of OLED displays, making it a valuable material in various OLED applications.

We provide TAPC with a purity exceeding 99.5%, as verified by HPLC analysis. This high level of purity is essential for consistent OLED performance, contributing to the reliability and efficiency of devices across a range of applications.

Key Features of TAPC

  • Enhanced Hole Injection and Transport: TAPC is renowned for its ability to facilitate effective hole injection and transport, a critical factor in the performance of hole transport layers in OLEDs. This property ensures efficient charge transfer, contributing significantly to device efficiency.
  • Superior Electronic Stability: The robust electronic stability of TAPC guarantees consistent performance under varying operational conditions. This makes it an ideal material for devices requiring long-term stability and reliability.
  • Versatility in OLED Applications: TAPC’s versatility extends beyond standard OLED components. It is also a crucial material in TADF (Thermally Activated Delayed Fluorescence) and phosphorescent applications, highlighting its broad applicability in the field.


The Role of TAPC in OLED Innovation

TAPC is a material that answers the growing demands of the OLED industry for efficient, long-lasting, and energy-saving materials. Its robust molecular structure and optimal electronic properties make it a vital component in advancing OLED technology, enhancing both device performance and lifespan.


TAPC represents a significant advancement in OLED material science. As a material that enhances the efficiency and sustainability of OLED devices, TAPC is instrumental in driving the future of organic electronics. Our commitment to high-purity TAPC positions us as a leading supplier in the OLED materials market, fostering innovation and excellence in OLED technology.

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