1-Allyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, CAS: 655249-87-9

Key Applications:

Electrochemical Systems

• Serves as a high‑conductivity ionic medium for supercapacitors, redox‑flow systems, and advanced electrochemical cells.
• Supports wide electrochemical windows, enabling stable operation in high‑voltage environments.
• Useful as a co‑solvent or electrolyte additive to improve ion mobility and reduce interfacial resistance.

Polymer and Materials Processing

• Acts as a reactive ionic liquid for polymer modification, particularly where the allyl group enables covalent incorporation into polymer matrices.
• Facilitates dissolution and processing of polar polymers, including cellulose derivatives and specialty engineering plastics.
• Functions as a plasticizer or ionic dopant in ion‑conducting polymer films.

Catalysis and Organic Synthesis

• Provides a tunable, low‑volatility reaction medium for transition‑metal catalysis, nucleophilic substitutions, and alkylation reactions.
• The allyl substituent can participate in or stabilize reactive intermediates, offering unique selectivity profiles in certain catalytic cycles.
• Enables biphasic catalysis where product separation is simplified due to immiscibility with common organic solvents.

Separation Science and Extraction

• Effective as an extraction phase for metal ions, hydrophobic organics, and fluorinated species due to the hydrophobic TFSI anion.
• Supports task‑specific extraction workflows where the allyl group can be leveraged for further functionalization or immobilization on solid supports.

Surface and Interface Engineering

• Useful in forming ionically conductive surface films for sensors, coatings, and thin‑film devices.
• The allyl moiety allows covalent grafting onto surfaces via radical or photochemical pathways, enabling durable ionic interfaces.

Energy and Photonic Materials

• Employed in dye‑sensitized solar cells and related optoelectronic systems as a stable ionic medium with low volatility.
• Enhances charge transport in composite materials containing conductive polymers or nanostructured carbon.

General Solvent and Processing Uses

• Provides a thermally stable, non‑volatile solvent for high‑temperature reactions and moisture‑sensitive transformations.
• Compatible with a wide range of inorganic salts, enabling formulation of designer electrolytes and ionic mixtures.

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