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General information

  • Name: 4TCzBN
  • Full name: 2,3,5,6-Tetrakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile
  • CAS number: 2055722-93-3
  • Chemical formula: C87H97N5
  • Molecular weight: 1212.73 g/mol
  • Absorption: λmax = 295 nm, 345 nm, 417 nm in Toluene
  • Photoluminescence: λmax = 483 nm in Toluene
  • HOMO/LUMO: HOMO = 5.5 eV, LUMO = 2.7 eV
  • Synonyms: 2,3,5,6-Tetrakis[3,6-bis(1,1-dimethylethyl)-9H-carbazol-9-yl]benzonitrile
  • Classification: Organic light-emitting diodes, Emmiting layer materials (EML), TADF materials, Blue fluorescent dopant materials
  • Purity: Sublimed: >99% (1H NMR)
  • Melting point: Tg = 322 °C
  • Appearance: Yellow powder/crystals

4TCzBN >99% – High-Purity Blue Fluorescent Dopant for Advanced OLEDs

At Noctiluca, we are thrilled to present 4TCzBN >99%, a critical material for the advancement of OLED (organic light-emitting diode) technology. Officially named 2,3,5,6-Tetrakis(3,6-di-tert-butyl-9H-carbazol-9-yl)benzonitrile, this compound, identified by CAS number 2055722-93-3 and molecular formula C87H97N5, is meticulously synthesized to meet the highest standards of research and industrial applications. With an outstanding purity of >99% (1H NMR), 4TCzBN ensures superior performance in advanced OLED applications. Our dedication to quality ensures that 4TCzBN enhances both the efficiency and longevity of OLED devices, making it an indispensable component for modern electronics.

Molecular Structure and Properties of 4TCzBN

4TCzBN is recognized for its exceptional photophysical properties. This yellow powder/crystal compound exhibits absorption maxima at λmax = 295 nm, 345 nm, and 417 nm in toluene, and photoluminescence at λmax = 483 nm in toluene. The molecular structure features a benzonitrile core with four carbazole groups, providing a balanced combination of electron-donating and electron-accepting properties. The robust thermal stability, with a glass transition temperature (Tg) of 322 °C, ensures the compound’s resilience under high-temperature processing conditions. These attributes make 4TCzBN an ideal choice for creating efficient and reliable OLEDs.

Key Features of 4TCzBN

  • Superior Purity and Quality: Our 4TCzBN, with a purity level of >99% as confirmed by 1H NMR, undergoes a stringent purification process. This high level of purity ensures consistent and reliable material quality, which is essential for high-performance OLED applications. The exceptional purity of 4TCzBN is vital for developing highly effective emissive and charge transport layers.
  • Optimized for Various OLED Applications: 4TCzBN excels in OLEDs as a blue fluorescent dopant in the emitting layer (EML). Its integration into this layer enhances the efficiency and operational lifespan of OLED devices. The versatility of 4TCzBN allows for its application across a range of OLED technologies, fostering innovation and enabling the creation of state-of-the-art displays with vibrant colors and high energy efficiency. This adaptability makes 4TCzBN an invaluable material for researchers and manufacturers aiming to develop next-generation OLED solutions.
  • Exceptional Photophysical Attributes: 4TCzBN is characterized by its remarkable light emission properties, with absorption maxima at λmax = 295 nm, 345 nm, and 417 nm, and photoluminescence at λmax = 483 nm in toluene. These attributes are crucial for achieving high-quality light emission and efficient energy transfer in OLEDs. The compound’s ability to produce bright and stable blue fluorescence makes it a key component in developing highly efficient display technologies.
  • High Thermal Stability: Designed to maintain high performance even at elevated temperatures, 4TCzBN boasts a glass transition temperature (Tg) of 322 °C. This impressive thermal stability ensures that 4TCzBN retains its structural integrity and electronic properties under demanding conditions, making it a reliable material for OLED applications requiring long-term consistency.
  • Process Versatility: 4TCzBN’s excellent solubility and adaptability make it suitable for various fabrication processes, including solution processing methods like spin-coating and inkjet printing. This flexibility allows for seamless integration into various OLED manufacturing workflows, leading to the production of devices with improved efficiency and uniformity. Whether used in research environments or large-scale production, 4TCzBN’s excellent processability supports innovative OLED design and application.

The Role of 4TCzBN in Advanced OLEDs

4TCzBN >99%, chemically known as C87H97N5, is pivotal to the advancement of OLED technology. Its efficient charge transport and emission properties significantly enhance the light-emitting capabilities and overall performance of OLED devices. As a blue fluorescent dopant, 4TCzBN ensures vibrant color purity and brightness, which are essential for developing high-definition displays. Its application as an emitting layer (EML) material improves the stability and longevity of OLED components, contributing to the production of durable and reliable electronic devices. The unique characteristics of 4TCzBN make it a crucial component in expanding the boundaries of OLED innovation and extending its applications in modern electronics.


4TCzBN >99% exemplifies Noctiluca’s commitment to delivering top-tier chemical materials, emphasizing our dedication to advancing material science for sustainable and efficient OLED applications. As a leading supplier of OLED materials and a contract research organization (CRO), we are committed to providing our clients with premium-grade materials that drive technological and innovative progress.

Contact us today to discover how our high-purity 4TCzBN can meet your scientific and industrial needs, ensuring your projects achieve the highest standards of quality and performance, or to inquire about bulk orders of this compound.


Any questions? Contact us!