1-Hexadecyl-3-methylimidazolium hexafluorophosphate, CAS: 219947-95-2

Key Applications

1. Surfactant‑Like and Self‑Assembly Systems

The C16 alkyl chain imparts strong amphiphilic behavior, enabling use in:

• Inclusion complex formation with host molecules such as β‑cyclodextrin
• Structural modification of soft‑matter systems (micelles, vesicles, lipid assemblies)
• Formulation and nanostructured material development

2. Electrochemical and Battery Systems

Used as an electrolyte additive in non‑aqueous electrochemical environments, including:

• Aluminum–air batteries
• Systems requiring hydrophobic ionic liquids with PF₆⁻ stability
• Interfaces where long‑chain imidazolium ions improve charge transport or wetting

3. Lipid Vesicle Engineering and Biointerfaces

Incorporation into phosphatidylcholine vesicles (10–30 mol%) has been shown to:

• Reduce vesicle size and turbidity
• Increase zeta potential
• Exhibit lower cytotoxicity than the bromide analogue (C16mimBr) in multiple cell lines

Applications include model membrane studies, drug‑delivery vesicle optimization, and biointerface engineering.

4. Hydrophobic Ionic Liquid for Extraction and Catalysis

As a hydrophobic IL, C16mim PF₆ supports:

• Microextraction of hydrophobic analytes
• Phase‑transfer catalysis
• Low‑water‑activity solvent systems for organic transformations

5. Antimicrobial and Surface‑Active Materials

Long‑chain imidazolium ionic liquids demonstrate antimicrobial activity, enabling use in:

• Antimicrobial coatings
• Functional polymer additives
• Surface‑active biocidal formulations

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