Butyltriethylammonium bis(trifluoromethylsulfonyl)imide, CAS: 258273-75-5

Key Applications:

1. Electrolytes and Ion-Transport Media

• High ionic conductivity and wide electrochemical stability window support use in lithium, sodium, and multivalent battery research.
• Serves as a non-volatile, thermally stable electrolyte component for supercapacitors and redox-flow systems.
• Useful as a dopant or plasticizer in polymer electrolytes to enhance ion mobility.

2. Polymer Science and Block Co‑Polymers

• Acts as a tunable ionic additive to modify microphase separation behavior in block co‑polymers.
• Enhances ionic domain formation, enabling improved mechanical strength, conductivity, or selective permeability.
• Supports directed self-assembly studies where ionic interactions influence morphology and long-range order.

3. Crystallization and Materials Processing

• Functions as a crystallization modifier for organic and inorganic compounds, altering nucleation rates and crystal habit.
• Useful in templating or controlling polymorph formation in pharmaceutical and fine-chemical crystallization workflows.
• Provides a low-volatility, thermally robust medium for crystallization studies requiring stable ionic environments.

4. Catalysis and Reaction Media

• Serves as a solvent or co-solvent for transition-metal catalysis, organocatalysis, and biphasic reaction systems.
• Enhances selectivity and turnover in reactions sensitive to polarity or ionic strength.
• Supports halide-free conditions due to its non-coordinating TFSI anion.

5. Separation Science

• Employed in liquid–liquid extraction, ion-exchange processes, and metal ion separations.
• High hydrophobicity and low miscibility with water enable selective partitioning of target species.

6. Thermal and Surface Applications

• Acts as a high-temperature lubricant or additive due to its thermal stability and low vapor pressure.
• Used in antistatic coatings, surface modification, and thin-film processing where ionic content must remain stable under heat.

7. Spectroscopy and Fundamental Studies

• Provides a well-defined ionic environment for NMR, IR, and Raman studies of ion pairing, solvation, and transport.
• Supports benchmarking of ionic liquid structure–property relationships.

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