High-purity liquid crystal intermediates

2‑Amino‑9,9‑diphenylfluorene（CAS 1268519‑74‑9）

1. English Aliases

• 9,9‑Diphenyl‑9H‑fluoren‑2‑amine

• 9,9‑Diphenylfluoren‑2‑amine

• DPF‑NH₂

• DK228

• 2‑Amino‑9,9‑diphenylfluoren

2. Physical & Chemical Properties

• Molecular Formula: C₂₅H₁₉N

• Molecular Weight: 333.43

• Appearance: White to yellow crystalline powder

• Density: 1.201 g/cm³

• Boiling Point: 496.6 ± 24.0 °C (Predicted)

• Flash Point: 268.7 °C

• Melting Point: Not widely reported (typically >150 °C for this class)

• pKa: 4.16 ± 0.40 (Predicted)

• Storage: Keep in dark, inert atmosphere, room temperature

• Solubility: Insoluble in water; soluble in organic solvents (THF, DCM, toluene)

• Structure:

  

3. Applications

• OLED Intermediate: Key building block for hole‑transport materials (HTM), emissive layers, and electron‑blocking layers in organic light‑emitting diodes。

• Organic Semiconductors: Used in synthesis of optoelectronic materials due to high thermal/photochemical stability and tunable fluorescence。

• Fluorescent Probes: Strong fluorescence makes it useful for biological imaging and sensing applications。

• Pharmaceutical Intermediate: For custom synthesis and drug development。

4. HS Code

• China HS: 2921495000