1-Ethyl-4-methylpyridinium bis(trifluoromethylsulfonyl)imide, CAS: 712355-03-8

Key Applications:

Electrolytes and Electrochemical Systems

• High‑conductivity ionic liquid electrolyte for lithium, sodium, and multivalent metal batteries.
• Stable medium for high‑voltage electrochemical windows due to the TFSI anion’s exceptional electrochemical stability.
• Solvent and co‑solvent for redox‑active species in flow batteries and electrosynthesis platforms.
• Ionic liquid additive for improving SEI formation and suppressing dendrite growth.

Catalysis and Reaction Media

• Non‑volatile, thermally robust solvent for transition‑metal catalysis, organocatalysis, and acid‑base catalysis.
• Tunable polarity and ion‑pairing environment for rate enhancement and selectivity control.
• Recyclable reaction medium for biphasic catalysis and continuous‑flow processes.

Vapor–Liquid Equilibrium (VLE), Thermodynamics, and Separation Science

• Benchmark ionic liquid for VLE measurements, phase‑behavior modeling, and equation‑of‑state parameterization.
• Used in CO₂, SO₂, and light‑gas solubility studies, supporting design of gas‑capture and gas‑separation systems.
• Employed in activity‑coefficient and excess‑enthalpy measurements, enabling thermodynamic modeling for process design.
• Suitable for ionic‑liquid/organic VLE datasets used in distillation, extractive distillation, and solvent‑screening workflows.

Materials Science and Polymer Engineering

• Plasticizer and ionic mobility enhancer in polymer electrolytes, ionogels, and solid‑state membranes.
• Component in advanced dielectric materials and electroactive polymers.
• Ionic liquid dopant for conductive polymers (e.g., PEDOT‑based systems) to improve charge transport.

Surface Science and Tribology

• Boundary‑lubrication additive for reducing friction and wear under high load and temperature.
• Surface‑modification medium for creating ion‑rich interfacial layers on metals, oxides, and carbons.

Spectroscopy, Analytical Chemistry, and Fundamental Studies

• Calibration and reference ionic liquid for Raman, NMR, and IR studies of ion pairing and solvation.
• Medium for studying charge transport, viscosity–conductivity relationships, and ion‑dynamics models.
• Used in fundamental investigations of pyridinium–TFSI structure–property relationships.

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