1：Experimental Design and Method Selection:

The study used solvent vapor exposure to induce film formation in PS/AgNPs composites, with monitoring via fast transient fluorescence (FTRF) for fluorescence lifetimes, UV-Vis for optical transparency, and SEM for morphology. Theoretical models included Stern-Volmer kinetics and the Prager-Tirrel model for chain dynamics.

2：Sample Selection and Data Sources:

Samples were prepared with PS latex dispersions (mean diameter 349 nm, Mw 2.66×10^5 g/mol, Tg 105 °C) and PVP-covered AgNPs (average diameter 15 nm, 95% purity) at weight fractions of 0, 1, 5, 10, 20, 30, and 50 wt% AgNPs.

3：66×10^5 g/mol, Tg 105 °C) and PVP-covered AgNPs (average diameter 15 nm, 95% purity) at weight fractions of 0, 1, 5, 10, 20, 30, and 50 wt% AgNPs. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Equipment included a Malvern Instruments Nano ZS for particle size measurement, gel permeation chromatography (GPC) for molecular weight, differential scanning calorimeter (DSC) for Tg, fast transient fluorescence setup for lifetime measurements, UV-Vis spectrometer for transparency, and SEM for imaging. Materials included PS latex, AgNPs powder, glass substrates, acetone, deionized water, and solvent vapor.

4：Experimental Procedures and Operational Workflow:

PS/AgNPs dispersions were prepared by mixing, drop-cast onto cleaned glass substrates, dried at room temperature to form powder films, exposed to solvent vapor, and monitored over time for fluorescence decay, optical transmission, and imaged with SEM post-formation.

5：Data Analysis Methods:

Fluorescence decay curves were fitted to a biexponential model to calculate mean lifetimes, analyzed with Stern-Volmer kinetics for quenching, and Prager-Tirrel model for reptation frequencies. Optical data were plotted for transparency, and SEM images were qualitatively assessed.