1-Methyl-3-nonylimidazolium hexafluorophosphate, CAS: 343952-29-4

Key Applications:

Solvent and Electrolyte Applications

• Non‑aqueous electrolyte component in electrochemical systems requiring high electrochemical stability and controlled viscosity.
• Solvent or co‑solvent for transition‑metal catalysis, improving solubility of organometallic complexes and enabling enhanced reaction rates.
• Medium for electrodeposition of metals and alloys, where hydrophobic ionic environments support uniform film formation.

Materials Science, Nanostructures, and Magnetic Systems

• Template and dispersant for synthesizing metal nanoparticles, metal oxides, and hybrid nanomaterials, with the C9 alkyl chain enabling tunable micellar or lamellar structures.
• Processing aid for polymers and ion‑conductive membranes, where the ionic liquid modulates morphology, conductivity, and mechanical properties.
• Surface modification agent for creating hydrophobic, ion‑rich interfaces on silica, carbon materials, and metal oxides.
• Magnetic‑responsive medium in systems incorporating paramagnetic or superparamagnetic species, where the ionic liquid’s low volatility and structural organization support stable dispersions and controlled magnetic manipulation.
• Carrier phase for magnetic nanofluids and magnetically switchable materials, enabling field‑responsive viscosity, alignment, or separation behavior.

Separation Science and Extraction

• Hydrophobic extraction phase for liquid–liquid separations involving aromatic hydrocarbons, sulfur‑containing compounds, or metal ions.
• Selective solvent for biomass‑derived molecules, including lignin fragments and platform chemicals, due to its ability to disrupt hydrogen‑bond networks.

Catalysis and Reaction Media

• Reaction medium for alkylation, acylation, and nucleophilic substitution, where the PF₆⁻ anion provides low coordinating strength and stabilizes reactive intermediates.
• Support phase for immobilized catalysts, enabling biphasic catalysis and simplified product separation.

Energy, Tribology, and Environmental Applications

• Component in ionic‑liquid‑based lubricants, where the C9 chain contributes to boundary‑layer formation, thermal stability, and reduced wear.
• Absorption medium for selective gas capture (e.g., SO₂, light hydrocarbons), leveraging tunable hydrophobicity and ionic interactions.

Analytical and Spectroscopic Uses

• Matrix and solvent for spectroscopic studies requiring low volatility and high thermal stability.
• Medium for electroanalytical measurements, improving signal stability and reducing solvent evaporation.

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