Product Name: Spiro[9H-fluorene-9,9′-[9H]xanthene]-3′,6′-diol
CAS Number: 4081-00-9
Description:
Spiro[9H-fluorene-9,9′-[9H]xanthene]-3′,6′-diol, often referred to as Spirofluorenexanthene diol, is a unique organic molecule featuring a rigid spirocyclic structure where fluorene and hydroxylated xanthene moieties are linked through a shared carbon atom. This complex, non-planar architecture makes it a valuable specialty diol monomer for synthesizing high-performance polymers. Polymers incorporating this monomer often exhibit exceptional thermal stability (high glass transition temperature, Tg), good solubility in organic solvents (due to the disruption of chain packing by the spiro structure), and potentially advantageous optical properties such as high refractive index and low birefringence. We supply high-quality Spirofluorenexanthene diol for advanced material development.
Properties:
| Property | Value |
| Chemical Formula | |
| Molar Mass | |
| CAS Number | 4081-00-9 |
| Appearance | White or off-white powder/solid |
| Melting Point | High, typically >300 |
| Boiling Point | Very high; likely decomposes before boiling at atmospheric pressure |
| Solubility | Low solubility in water; Soluble in select polar organic solvents |
| Synonyms | Spirofluorenexanthene diol, 3′,6′-Dihydroxyspiro[fluorene-9,9′-xanthene] |
| Purity | >98%, Polymer Grade |
| Storage Conditions | Store in a tightly sealed container in a cool, dry place. |
Usage:
Spiro[9H-fluorene-9,9′-[9H]xanthene]-3′,6′-diol is primarily used as a specialty diol monomer in polymer chemistry:
- High-Performance Polymers: Employed to build polymers with enhanced thermal and optical properties.
- Example: Synthesis of polyesters, polycarbonates, polyethers, or polyurethanes with very high glass transition temperatures (Tg), suitable for applications demanding high heat resistance.
- Optical Materials: Its unique structure is beneficial for polymers used in optics.
- Example: Development of polymers for optical films, lenses, or substrates requiring high clarity, thermal stability, and low birefringence (reduced optical distortion).
- Material Science Research: Used as a building block to create novel polymers with complex spiro architectures, exploring structure-property relationships for advanced materials.