1-Butyl-4-methylpyridinium bromide, CAS: 65350-59-6

Key Applications:

Electrochemistry & Energy Storage

• Employed as a supporting electrolyte in voltammetry, electrodeposition, and redox‑active systems due to its wide electrochemical window and stable cation framework.
• Used to study ion transport, charge mobility, and interfacial behavior in ionic‑liquid–based electrolytes for batteries and capacitors.
• Serves as a medium for metal ion stabilization and controlled electrodeposition.

Catalysis & Organic Synthesis

• Functions as a non‑volatile reaction solvent for nucleophilic substitutions, oxidations, and transition‑metal‑catalyzed transformations.
• Enhances catalyst dispersion and selectivity in biphasic and phase‑transfer systems.
• Supports green‑chemistry workflows by replacing volatile organic solvents.

Solvent Extraction & Separation Science

• Applied in liquid–liquid extraction of metal ions, dyes, and organic solutes, leveraging its tunable polarity and strong anion–cation interactions.
• Used in partitioning studies to model solvation dynamics and ion‑pairing behavior.
• Supports chromatographic method development as an ionic additive or mobile‑phase modifier.

Materials Science & Polymer Research

• Incorporated into polymer matrices to modify conductivity, thermal stability, and mechanical properties.
• Used as a templating or structure‑directing agent in the synthesis of porous materials and nanostructures.
• Serves as a plasticizer or ionic dopant in advanced functional materials.

Spectroscopy & Fundamental Studies

• Provides a controlled ionic environment for NMR, IR, and UV–Vis investigations of solvation, ion pairing, and molecular interactions.
• Used in benchmarking studies comparing pyridinium ionic liquids with imidazolium and ammonium analogues.

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