Hydrophilicity controls thermodiffusion in alkylammonium chlorides

Key Points

• The research aims to investigate how hydrophilicity affects thermodiffusion in alkylammonium chlorides.
• Examined the Soret effect of ammonium chloride and alkyl-substituted derivatives in aqueous solution.
• Utilized infrared thermal diffusion forced Rayleigh scattering for measurements.
• Compared Soret coefficients of different alkylammonium chlorides.
• Soret coefficient increases systematically with greater alkyl substitution.
• NH4Cl shows lower Soret coefficients compared to alkyl-substituted derivatives.
• The trend indicates a strong correlation between hydrophilicity and thermodiffusion.