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General information

  • Name: mCPCN
  • Full name: 9-(3-(9H-Carbazol-9-yl)phenyl)-9H-carbazole-3-carbonitrile
  • CAS number: 1392506-99-8
  • Chemical formula: C31H19N3
  • Molecular weight: 433.50 g/mol
  • Absorption: λmax = 326 nm, 339 nm in DCM
  • Photoluminescence: λmax = 348 nm, 365 nm in DCM
  • HOMO/LUMO: HOMO = 5.8 eV, LUMO = 2.2 eV
  • Synonyms: mCP-CN
  • Classification: Organic light-emitting diodes, Hole transport layer materials (HTL), Host materials, TADF materials
  • Purity: Sublimed: >99.0% (HPLC)
  • Melting point: Tm = 222 °C, Td = 313 °C, Tg = 97 °C
  • Appearance: White Powder

mCPCN Specification: The Next Step in OLED Technology

The realm of organic light-emitting diodes (OLEDs) is continuously expanding. Among the plethora of materials and compounds propelling this technology, mCPCN emerges as a promising contender in the OLED stack.

Understanding mCPCN

mCPCN, fully recognized as 9-(3-(9H-Carbazol-9-yl)phenyl)-9H-carbazole-3-carbonitrile is a high-triplet-energy phosphorescent host material. Its distinctive structure, characterized by a benzene center and two carbazoles (one with cyano group), positions it as a highly desirable material in organic electronic devices.

Key Features of mCPCN

  • Exciplex Forming Nature: A standout feature of mCPCN is its capacity to form exciplexes. This characteristic is pivotal for the evolution of advanced OLEDs, particularly in the domain of TADF (Thermally Activated Delayed Fluorescence) OLEDs.
  • Hole Transport Material: Addition of cyano group in mCPCN enhances electron affinity, aiming to achieve a more equitable injection and transportation of holes and electrons. This systematic strategy ensures OLEDs operate efficiently and possess extended lifetimes.
  • Comparing to mCP: mCPCN-based devices have their thermal stabilities improved. Also, film morphology is improved.
  • Universal Host Material: mCPCN can be used for hosting blue, green, red and white light emitting TADF-OLED devices.

The Role of mCPCN in Modern OLEDs

Nowadays OLEDs necessitate materials that can provide elevated efficiency, durability, and diminished energy expenditure. mCPCN, with its unparalleled attributes, is a perfect match. The properties of single-carrier devices incorporating mCPCN suggest a well-balanced capability for injecting and transporting both holes and electrons. Utilizing mCPCN as the bipolar host material, remarkably efficient phosphorescent organic light emitting devices (PhOLEDs) have been developed. These devices achieved exceptional external quantum efficiencies, current efficiencies, and power efficiencies. Additionally, the introduction of mCPCN leads to reduction in efficiency roll-offs.


The OLED universe is vast, with an incessant demand for proficient, enduring materials. mCPCN, endowed with its unique attributes and functionalities, is poised to assume a central role in OLED technology’s future. As investigations persist and technology advances, it’s evident that mCPCN will discover an increasing array of applications in organic electronic devices.

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