1-Butyl-4-methylpyridinium hexafluorophosphate, CAS: 401788-99-6

Key Applications:

Electrochemical Systems

• Serves as a high‑stability ionic liquid electrolyte for supercapacitors, redox‑flow systems, and advanced battery research.
• Offers wide electrochemical windows and low volatility, supporting high‑voltage device development.
• Useful as a supporting electrolyte in cyclic voltammetry and electrodeposition studies where PF₆⁻ stability is advantageous.

Catalysis and Synthesis

• Functions as a non‑volatile reaction medium for transition‑metal‑catalyzed transformations, including cross‑coupling and selective alkylation.
• Enhances reaction rates and selectivity in biphasic and solvent‑free systems due to its polarity and thermal stability.
• Supports ionic‑liquid‑assisted synthesis of nanomaterials, enabling controlled nucleation and particle morphology.

Separation Science

• Applied in liquid–liquid extraction of metal ions, particularly for hydrophobic or soft‑acid species.
• Useful in chromatographic method development as an ionic liquid additive to tune retention, peak shape, and selectivity.
• Supports membrane‑based separations where ionic liquid incorporation improves ion transport and chemical resistance.

Materials and Surface Engineering

• Employed as a templating or structuring agent in the fabrication of porous materials, conductive films, and polymer composites.
• Enhances dispersion and interfacial compatibility in polymer matrices due to its amphiphilic cation and hydrophobic anion.
• Utilized in electrodeposition baths to improve coating uniformity and suppress dendritic growth.

Thermal and Chemical Stability Applications

• Suitable for high‑temperature reaction environments due to its low vapor pressure and robust PF₆⁻ anion.
• Acts as a heat‑transfer or thermal‑storage medium in specialized research settings requiring non‑flammable ionic liquids.

Solvation and Spectroscopy

• Provides a tunable, non‑coordinating solvent environment for spectroscopic studies of organometallic complexes and reactive intermediates.
• Supports solvatochromic and ion‑pairing investigations where controlled polarity and ionic strength are required.

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