1-Butyl-3-methylpyridinium bis(trifluoromethylsulfonyl)imide, CAS: 344790-86-9

Key Applications

Electrochemical Systems

• Serves as a high‑stability electrolyte or electrolyte additive in lithium, sodium, and multivalent battery research, particularly where low volatility and high oxidative stability are required.
• Enables stable electrode–electrolyte interfaces in supercapacitors and hybrid capacitors due to its broad electrochemical window.
• Functions as a solvent medium for electrodeposition of metals and alloys, improving morphology control and reducing parasitic reactions.

Catalysis and Synthesis

• Provides a non‑volatile, thermally stable reaction medium for transition‑metal catalysis, including cross‑coupling, hydrogenation, and oxidation systems.
• Supports biphasic catalysis and catalyst recycling due to its immiscibility with many organic solvents.
• Enhances selectivity and rate in ionic‑liquid‑assisted organic transformations where strong anion stability is beneficial.

Materials Science and Surface Engineering

• Used in polymer electrolyte formulations to improve ionic conductivity and mechanical stability in high‑performance membranes.
• Acts as a templating or structuring agent in the synthesis of porous materials, nanocomposites, and functional coatings.
• Serves as a lubricant or anti‑wear additive in high‑temperature or vacuum environments due to its low vapor pressure and thermal resilience.

Separation Science and Extraction

• Applied in liquid–liquid extraction systems for selective separation of metal ions, hydrophobic organics, and fluorinated species.
• Supports chromatographic method development as a stationary‑phase modifier or mobile‑phase additive, improving peak shape and selectivity.

Spectroscopy and Fundamental Research

• Provides a controlled, non‑volatile medium for spectroscopic studies (NMR, IR, UV‑Vis) of ionic transport, solvation, and ion‑pairing behavior.
• Used in fundamental investigations of pyridinium‑based ionic liquid structure–property relationships, especially those involving TFSI anion dynamics.

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