1-Ethyl-3-methylimidazolium hexafluorophosphate, CAS: 155371-19-0

Key Applications:

Electrochemical Systems

• Used as a non‑volatile electrolyte component in supercapacitors and electrochemical double‑layer capacitors (EDLCs).
• Serves as a supporting electrolyte in cyclic voltammetry, electrodeposition, and high‑voltage electrochemical studies due to its wide electrochemical window.
• Provides stable ion transport in moisture‑sensitive, high‑voltage environments where PF₆⁻ salts are preferred.

Organic and Organometallic Synthesis

• Functions as a reaction medium for transition‑metal catalysis, including cross‑coupling and hydrogenation.
• Supports selective alkylation, oxidation, and nucleophilic substitution reactions by stabilizing reactive intermediates.
• Offers a low‑volatility alternative to conventional polar aprotic solvents.

Extraction and Separation Processes

• Applied in liquid–liquid extraction of metal ions, aromatic hydrocarbons, and biomass‑derived compounds.
• Used in CO₂ capture studies where hydrophobic PF₆⁻ ionic liquids act as absorbents.
• Enables ionic‑liquid biphasic catalysis, facilitating catalyst recycling and phase separation.

Materials Science and Polymer Processing

• Acts as a plasticizer or conductivity enhancer in polymer electrolytes and ion‑conducting films.
• Used in nanoparticle synthesis, particularly for stabilizing metal and metal‑oxide colloids.
• Supports templated material formation, including porous carbons and silica frameworks.

Spectroscopy and Analytical Chemistry

• Provides a high‑purity, low‑volatility matrix for NMR, FTIR, and electroanalytical studies.
• Suitable as a reference electrolyte system in ion‑transport and fundamental electrochemistry research.

Thermal and Physical Property Studies

• Commonly used in research on viscosity, ionic mobility, and phase behavior of hydrophobic ionic liquids.
• Supports benchmarking of PF₆⁻‑based ionic liquid families in thermophysical modeling.

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