Product Name: 9,9-Bis(4-amino-3-fluorophenyl)fluorene
CAS Number: 127926-65-2
Description:
9,9-Bis(4-amino-3-fluorophenyl)fluorene is a specialized aromatic diamine, representing a fluorinated analogue of BAPF (9,9-Bis(4-aminophenyl)fluorene). This compound incorporates the rigid fluorene backbone structure linked to two 2-fluoroaniline units. Typically supplied as a light-colored solid powder, it serves as a key diamine monomer for synthesizing high-performance polymers, particularly polyimides designed for advanced electronic and optical applications. The introduction of fluorine atoms ortho to the amine groups significantly influences the resulting polymer properties, often leading to a substantially lower dielectric constant, reduced moisture absorption, modified thermal characteristics, and altered optical properties (like lower refractive index) compared to non-fluorinated counterparts. We supply high-quality 9,9-Bis(4-amino-3-fluorophenyl)fluorene for demanding material requirements.
Properties:
| Property | Value |
| Chemical Formula | |
| Molar Mass | |
| CAS Number | 127926-65-2 |
| Appearance | Light-colored solid/powder |
| Melting Point | Approx. $215-220 \, ^\circ C$ ($419-428 \, ^\circ F$) (May vary with purity) |
| Boiling Point | High boiling point; likely decomposes at atmospheric pressure |
| Solubility | Low solubility in water; Soluble in organic solvents |
| Synonyms | Fluorinated BAPF derivative, 4,4′-(9H-Fluoren-9-ylidene)bis(2-fluoroaniline) |
| Purity | e.g., >99%, Electronics Grade |
| Storage Conditions | Store in a tightly sealed container in a cool, dry, dark place. |
Usage:
9,9-Bis(4-amino-3-fluorophenyl)fluorene is primarily used as a specialty diamine monomer where specific properties imparted by fluorine are advantageous:
- Low Dielectric Constant Polymers: Its most significant application is in synthesizing polyimides and other polymers requiring very low dielectric constants and low dielectric loss.
- Example: Used in advanced microelectronics for interlayer dielectrics, substrate materials for high-frequency circuits, and semiconductor packaging.
- Polymers with Low Moisture Uptake: The hydrophobic nature of fluorine reduces water absorption.
- Example: Materials for applications where dimensional stability and consistent electrical properties are needed under humid conditions.
- Optical Polymers: Fluorination can lower the refractive index.
- Example: Development of polymers for optical waveguides, claddings, or specialty coatings.
- Gas Separation Membranes: The fluorine substituents can modify gas transport properties for specific membrane applications.
- Material Science Research: Employed to create and study fluorinated high-performance polymers for cutting-edge technological applications.