1：Experimental Design and Method Selection:

The study involved investigating the oxygen sensing performance of selected PAHs (BzP, Cron, pyrene, and perylene) in ethanol, water/ethanol mixtures, and micelle solutions. A ratiometric method was developed based on dual-emissive luminophores, utilizing monomer emission as the signal and excimer emission as an internal reference.

2：Sample Selection and Data Sources:

Stock solutions of benzo[ghi]perylene, coronene, pyrene, and perylene were prepared in ethanol at concentrations of 1-3 mM. Diluted samples were made in ethanol, ethanol/water mixtures, and CTAB micelle solutions. Gaseous mixtures with varying N2/O2 compositions (0-100% oxygen) were used.

3：List of Experimental Equipment and Materials:

Benzo[ghi]perylene, coronene, perylene, pyrene, CTAB, silicone elastomer curing agent, silicone elastomer base, ethanol, water purified by Milli-Q system, oxygen and nitrogen gases. Instruments included a Fluoromax-4 Spectrofluorometer, FLS920 spectrofluorimeter with EPL 375 pulsed laser diode, zetasizer nano ZS-90 particle size and zeta potential analyzer, and FEI Tecnai G2 F20 electron microscope.

4：Experimental Procedures and Operational Workflow:

Solutions were purged with oxygen and nitrogen to assess quenching. Fluorescence spectra were recorded at specific excitation wavelengths (e.g., 310 nm for pyrene, 365 nm for BzP). Particle size was measured by DLS, and TEM images were obtained. Thin films were prepared by mixing probe solutions with silicone components and spin-coating on quartz substrates.

5：Data Analysis Methods:

Fluorescence intensities were analyzed using Stern-Volmer plots. The ratio of excimer to monomer emission (IE/IM) was calculated for ratiometric sensing. Data were processed to determine oxygen concentrations in samples.