Semiconductor Display Materials

1. Physicochemical Properties

• CAS Number: 154346-21-1
• Molecular Formula: C₂₁H₁₇F₃
• Molecular Weight: 326.35 g/mol
• Structure: A terphenyl derivative with a pentyl substituent on one ring and 2.3.4-trifluoro substitution on the central ring.
• Key Characteristics:

The pentyl group contributes to hydrophobic behavior, while fluorine atoms enhance stability and electronic effects.

The molecule combines a rigid terphenyl backbone with multiple fluorine atoms, influencing its liquid crystalline properties.

• Boiling Point: Predicted at 414.4±45.0°C.
• Density: Predicted at 1.157±0.06 g/cm³.

2. Synthesis Method

The compound is likely synthesized via cross-coupling reactions (e.g., Suzuki-Miyaura coupling). This involves reacting a pentyl-substituted aryl halide with a trifluoro-substituted arylboronic acid/ester in the presence of a palladium catalyst, a base, and a ligand. The synthesis may require:

• Protection/deprotection steps to manage reactive sites.
• Purification via chromatography or recrystallization to achieve high purity.

3. Applications

• Liquid Crystals: The rigid terphenyl structure and multiple fluorine atoms make it a candidate for liquid crystal materials, where it could influence molecular alignment and optical properties.
• Organic Electronics: Potential use in organic light-emitting diodes (OLEDs) or photovoltaic cells due to its conjugated structure and electron-withdrawing fluorine atoms.
• Specialty Coatings: The hydrophobic nature and thermal stability may be useful in advanced surface coatings.

4. Safety Information

• Handling: Follow standard chemical safety protocols (e.g., use gloves, goggles, and fume hoods). Avoid skin contact and inhalation.
• Storage: Keep in a cool, dry place, away from oxidants and strong acids.
• Disposal: Consult local regulations for hazardous waste disposal.

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