科研之友
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摘要
Surfactants tend to assemble into a variety of ordered structures in water, and they also can form aggregates in non-aqueous solvents but generally requiring water involvement. Interfacial hydration state directly affects structure and function of aggregates. Knowledge on hydration properties of aggregates is important for understanding assembly mechanism and developing desired functions. Characterization method is crucial for obtaining structure and dynamic properties of interfacial water in aggregates. This review focuses on research progress of surfactant aggregate hydration using different characterization methods in the past three decades. Chemical trapping method, Raman spectroscopy with multivariate curve resolution and Pulsed gradient spin-echo NMR for static state property of interfacial water are described, while Dielectric relaxation spectroscopy, Ultrafast 2D infrared spectroscopy and Time-resolved fluorescence spectroscopy aimed for dynamic behavior of interfacial water are introduced. Finally, the future research in this field is anticipated.
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