1-Butyl-3-vinylimidazolium bromide, CAS: 34311-90-5

Key Applications:

Polymer and Materials Synthesis

• Serves as a reactive ionic monomer for producing poly(ionic liquid)s (PILs) with tailored mechanical, thermal, and ion‑transport properties.
• Enables in situ polymerization within composites, membranes, and coatings to impart ionic conductivity and enhanced interfacial adhesion.
• Useful in surface‑grafted polymer brushes, allowing covalent anchoring of ionic domains on substrates for antifouling, lubrication, or charge‑modulating surfaces.
• Supports crosslinked ionogel formation, where the vinyl group participates in network formation while the ionic core provides conductivity and stability.

Electrochemical and Energy‑Related Uses

• Functions as a precursor to polymer electrolytes with high ionic mobility and tunable glass‑transition behavior.
• Applied in solid‑state or quasi‑solid‑state electrolytes for batteries, supercapacitors, and electrochromic devices.
• Acts as a conductive binder or matrix in electrode fabrication, improving charge transport and mechanical cohesion.

Catalysis and Reaction Media

• Provides a low‑volatility, thermally stable ionic environment for catalytic transformations, especially polymerization, alkylation, and transition‑metal‑mediated reactions.
• The vinyl functionality allows post‑reaction immobilization of catalysts through polymerization, enabling catalyst recovery and reuse.
• Useful as a phase‑transfer medium for reactions involving polar or ionic intermediates.

Separation Science and Analytical Applications

• Serves as a stationary‑phase modifier in chromatography, where the vinyl group can be polymerized to create stable ionic coatings.
• Enhances selective extraction of metal ions, organic acids, and charged analytes due to its tunable polarity and ionic character.
• Supports membrane fabrication for ion‑exchange, pervaporation, and selective permeation processes.

Advanced Functional Materials

• Enables fabrication of stimuli‑responsive materials, where polymerized ionic domains respond to electric fields, humidity, or chemical triggers.
• Useful in optical and dielectric materials, leveraging the ionic core and polymerizable group to tune refractive index, dielectric constant, and mechanical flexibility.
• Supports additive manufacturing formulations, particularly UV‑curable systems requiring ionic functionality.

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