1-Butyl-1-methylpyrrolidinium Bromide, CAS: 93457-69-3

Key Applications:

Electrochemical Systems

• Precursor for hydrophobic ionic liquids used in lithium battery electrolytes, supercapacitors, and electrochemical double‑layer systems.
• Ionic component in ionic‑liquid‑based electrolytes requiring high thermal stability and low volatility.

Ionic Liquid Synthesis and Structure–Property Studies

• Quaternary ammonium building block for preparing ionic liquids via anion exchange.
• Supports research on cation structure effects, including viscosity, conductivity, and solvation behavior.

Phase‑Transfer and Catalysis

• Functions as a phase‑transfer catalyst in organic synthesis, especially in reactions requiring strong nucleophiles or controlled ion transport.
• Useful in micellar and biphasic reaction systems due to its amphiphilic cation structure.

Materials Science and Polymer Processing

• Incorporated into polymer matrices to tune ionic conductivity, mechanical flexibility, and thermal stability.
• Applied in ion‑conducting membranes, solid polymer electrolytes, and functional coatings.

Thermal and Transport Property Research

• Used in studies of ionic mobility, viscosity, and ion–solvent interactions in quaternary ammonium systems.
• Supports modeling of transport phenomena in ionic liquids and molten‑salt analogs.

Surfactant and Solvent Systems

• Contributes to the design of task‑specific solvents with tunable polarity and miscibility.
• Applied in colloidal stabilization, nanoparticle dispersion, and controlled self‑assembly.

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