1-Methyl-3-propylimidazolium bromide, CAS: 85100-76-1

Key Applications:

1. Phase‑Transfer and Catalytic Media

• Serves as a high‑efficiency phase‑transfer catalyst for nucleophilic substitutions, alkylations, and condensations where bromide availability and imidazolium polarity enhance reaction rates.
• Functions as a polar, non‑volatile reaction medium for transition‑metal catalysis, enabling improved solubility of organometallic complexes and ionic substrates.
• Useful in microwave‑assisted synthesis, where its ionic character accelerates heating and reduces reaction times.

2. Electrochemical and Conductive Applications

• Acts as a supporting electrolyte in electrochemical studies requiring stable, well‑defined ionic conductivity.
• Suitable for ionic‑liquid‑modified electrodes, improving charge transfer and film stability in voltammetric and impedance experiments.
• Employed in template‑directed electrodeposition of metals and semiconductors due to its controlled ion mobility and thermal stability.

3. Materials Science and Polymer Integration

• Used as a structure‑directing agent in the preparation of mesoporous silica, metal oxides, and hybrid inorganic–organic materials.
• Serves as an ionic plasticizer or compatibilizer in polymer matrices, enhancing flexibility, ionic transport, and dispersion of charged fillers.
• Supports ion‑exchange and surface‑functionalization protocols for membranes, resins, and nanoparticle coatings.

4. Extraction, Separation, and Solvent Systems

• Effective in liquid–liquid extraction of metal ions, dyes, and organics due to its tunable polarity and strong ion‑pairing behavior.
• Applied in chromatographic method development as an additive to adjust retention, peak shape, and selectivity.
• Useful in CO₂‑related sorption studies and gas–liquid equilibria research where short‑chain imidazolium salts provide benchmark data.

5. Molecular Recognition and Supramolecular Chemistry

• Employed in host–guest assembly studies, where the imidazolium cation participates in hydrogen bonding and π‑cation interactions.
• Supports self‑assembly of ionic frameworks, including ionic liquid crystals and ordered thin films.

6. Benchmarking and Fundamental Research

• Commonly used as a model short‑chain imidazolium bromide for studying ion pairing, viscosity, conductivity, and solvation dynamics.
• Provides a reference system for computational chemistry, including MD simulations and DFT studies of cation–anion interactions.

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