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2025ï¿½ï¿½12ï¿½ï¿½12ï¿½Õ£ï¿½ï¿½ï¿½ï¿½Pï¿½ï¿½ï¿½ï¿½ï¿½ï¿½One-Step Solvent-Free Dual-Curing Strategy for Fluorine-Free Omniphobic Coatings: Synchronizing High Transparency, Durability, and Antifouling in Underwater Optical Systemsï¿½ï¿½ï¿½}ï¿½lï¿½ï¿½ï¿½ï¿½ï¿½ï¿½Advanced Functional Materialsï¿½ï¿½ï¿½Ï¡ï¿½

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Figure 1. Design and performance of PEHMC. a) Schematic illustration of dual-curing hybrid strategy. b) Illustration of anti-adhesion application. c) RT, H, and pencil hardness of PEHMC_190(5-115). The inset shows a photograph of the PEHMC_190(15). d) Evolution of WCA for PEHMC_170-210(15) during the steel wool abrasion test. e) SAs of PEHMC_170-210(15) against 10 ï¿½ï¿½L probe liquids with different surface tensions. f) Radar chart comparing the comprehensive performance between our coating with other cutting-edge, robust, and highly transparent antifouling coatings reported in recent years.

Figure 2. Characterization of the coatings. a) Surface SEM image and corresponding EDX elemental mapping (Si) of PEHMC₁₉₀. b) 2D AFM height image of the PEHMC₁₉₀ surface. c) Si content on the surface of PEHMC_130/170/210 by EDX analysis (inset: schematic illustrating enhanced organosiloxane chain migration to the surface at elevated temperatures). d) Cross-sectional SEM image of the mid-layer region of PEHMC_190(45). e) ATR-FTIR spectra of PEHMC₁₉₀ and its constituent materials. f) TG curves of PEM, PEH, and PEHM. g) DSC and DTG curves of PEHM. h) Eï¿½ï¿½ and ï¿½ï¿½ results of PEHMC_170-210. i) TG curve of PEHMC₁₉₀.

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Figure 3. Multi-functionality of the coatings. a) Diagrams of the polymer networks in PEMC₁₉₀ and PEHC₁₉₀. b) Comparative anti-graffiti performance on Glass and coated glass samples. c,d) EIS measurements of coated steel samples after immersion in simulated seawater for (c) 0 d, and (d) 7 d. e) Corrosion potential (E_corr) and corrosion current density (i_corr) obtained from polarization curves.

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Figure 4. Long-term durability of the coatings. a) Evolution of WCA for PEHMC₁₉₀@Glass during the falling sand wear cycle test. b) Changes of WCA of PEHMC₁₉₀@Glass during the tape-peeling cycle test. c) Optical microscopy images of cross-cut scratches on PEHMC₁₉₀@Glass before and after 3 m tape-peeling for 3 times. d) Changes of RT and H at the bending region of PEHMC₁₅₀@PET during 10000 cycles of bending. e) Changes in SAs of probe liquids (same as immersion solvents) on the surface of PEHMC₁₉₀ after immersion in various solvents. f) WCA of PEHMC₁₉₀@Steel after 42-day immersion in solutions of different pH. g) Variations of RT and H of PEHMC₁₉₀@Glass during the solvent-wiping resistance test. h) Variations in RT and H of PEHMC₁₉₀@Glass during the salt-deposition resistance evaluation. i) Adhesion density of BSA on different samples after a 4-day protein adhesion test.

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Figure 5. Demonstration of underwater applications. a) Comparison of sample surfaces before and after cleaning following the 14-day chlorella adhesion test. b) Simulated imaging results through Glass and PEHMC₁₉₀@Glass before and after 28-day underwater antifouling test; insets show optical photographs of the corresponding samples (scale bar: 5 mm). c) Optical images of Steel and PEHMC₁₉₀@Steel surfaces before and after the 28-day underwater antifouling test.

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