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    Area of Science:

    • Chemical Physics
    • Structural Dynamics
    • Spectroscopy

    Background:

    • Time-resolved x-ray liquidography (TRXL) probes liquid-phase reaction dynamics.
    • TRXL data analysis is complex due to mixed solute, solvent, and cross-scattering signals.
    • Existing methods often require prior knowledge of molecular structures, leading to trial-and-error analysis.

    Purpose of the Study:

    • To develop a novel method for simplifying TRXL data analysis.
    • To isolate solute kinetics from solvent hydrodynamics in TRXL data.
    • To enhance the convenience of extracting structural information from TRXL experiments.

    Main Methods:

    • Developed the projection to extract the perpendicular component (PEPC) method.
    • PEPC removes solvent kinetic contributions from TRXL data.
    • Applied PEPC to TRXL data from [Au(CN)2-]3 photochemistry in water and CHI3 in cyclohexane.

    Main Results:

    • PEPC successfully isolates solute kinetics from TRXL data.
    • The method simplifies the determination of reaction kinetics.
    • Facilitates more convenient extraction of structural dynamics information.

    Conclusions:

    • PEPC significantly improves the analysis of TRXL data.
    • The method reduces reliance on prior structural knowledge.
    • Enables more efficient investigation of chemical and biological reaction mechanisms.