General information

  • Name: TPE-TOH
  • Full name: 4,4′,4′′,4′′′-(Ethene-1,1,2,2-tetrayl)tetraphenol
  • CAS number: 119301-59-6
  • Chemical formula: C26H20O4
  • Molecular weight: 396.43 g/mol
  • Absorption: N/A
  • Photoluminescence: λmax = 434 nm in THF/Water solution
  • Synonyms: Tetrakis(4-hydroxyphenyl)ethylene, 4,4',4'',4'''-(1,2-Ethenediylidene tetrakis[phenol]
  • Classification: Organic optoelectronic materials, Fluorescent chemosensors, Aggregation-induced emission layer materials (AIE)
  • Purity: >98.0% (HPLC)
  • Melting point: 190 - 192 °C
  • Appearance: White to light yellow powder

TPE-TOH: A Luminescent Pioneer in Organic Optoelectronic Materials

The field of organic optoelectronic materials is continuously advancing, with compounds like TPE-TOH emerging as significant contributors. With its distinctive aggregation-induced emission (AIE) effect and its role as a synthetic intermediate for more complex derivatives, TPE-TOH is solidifying its position in the domain.

Understanding TPE-TOH

4,4′,4′′,4′′′-(Ethene-1,1,2,2-tetrayl)tetraphenol, commonly known as TPE-TOH, is a derivative of tetraphenylethylene (TPE) enriched with four hydroxyl groups. In a THF solution, this molecule remains predominantly non-emissive. However, the addition of water initiates an intense blue fluorescence, attributed to the aggregation-induced emission (AIE) effect.

Key Features of TPE-TOH

  • Luminescent Behavior: The AIE effect exhibited by TPE-TOH positions it as a preferred choice for optical materials and chemosensors. Its characteristic fluorescence upon aggregation is a defining trait.
  • Role as a Synthetic Intermediate: TPE-TOH acts as a foundational compound for synthesizing intricate derivatives like TPE-CA and TPE-Sulfonate, broadening its relevance in organic electronics.
  • Diverse Applications: Beyond its luminescent properties, TPE-TOH’s molecular composition allows for its deployment in a range of applications, from fluorescent chemosensors to aggregation-induced emission layer materials.

TPE-TOH in Organic Electronics

The π-electron structure of TPE-TOH, combined with its electron-deficient nature, earmarks it as a crucial material in organic electronics. Its versatility and adaptability to various applications emphasize its importance in the sector. Moreover, its function as a synthetic intermediate for more complex derivatives accentuates its value in the research and development of next-generation organic electronic devices.


TPE-TOH stands as a pivotal compound in the organic optoelectronic materials sector. Its unique molecular features, coupled with its diverse applications, position it as a material with substantial potential. As the organic electronics field progresses, the role of TPE-TOH will undoubtedly be of significant importance.

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