1-Methyl-1-propylpiperidinium iodide, CAS: 17874-63-4

Key Applications:

Electrochemical and Energy‑Related Uses

• Redox‑active electrolyte component in halide‑based electrochemical systems, including early‑stage battery and capacitor research where iodide ions participate in charge‑transfer processes.
• Ionic conductivity modifier in prototype electrolytes for dye‑sensitized solar cells (DSSCs) and photoelectrochemical devices that rely on I⁻/I₃⁻ redox couples.
• Supporting electrolyte in voltammetry and electroanalytical studies requiring stable, non‑volatile cations paired with iodide.

Materials Science and Ion‑Transport Studies

• Model compound for ion‑pairing and solvation studies, especially in polar aprotic solvents.
• Precursor for ion‑exchange reactions, enabling synthesis of alternative piperidinium salts (e.g., PF₆⁻, TFSI⁻, BF₄⁻) through metathesis.
• Structure–property investigations in quaternary ammonium systems, including melting point tuning, viscosity behavior, and phase‑transition mapping.

Catalysis and Organic Synthesis

• Phase‑transfer catalyst (PTC) in reactions where iodide enhances nucleophilicity or facilitates halide exchange.
• Halide source for substitution reactions or for generating reactive iodide species in situ.
• Quaternary ammonium scaffold for preparing functionalized piperidinium derivatives used in catalysis or polymer modification.

Polymer and Formulation Research

• Additive in polymer electrolytes to adjust ionic mobility or plasticization behavior.
• Template or structure‑directing agent in the formation of charged polymer networks or ion‑conducting membranes.
• Stabilizer in colloidal or micellar systems where quaternary ammonium cations influence aggregation.

Analytical and Spectroscopic Applications

• Calibration or reference material for NMR, conductivity, or ion‑mobility studies involving quaternary ammonium ions.
• Probe molecule for studying halide–cation interactions, solvation shells, and ion clustering.

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