| 초록 |
Superhydrophobic materials possessing static water contact angles greater than 150° have attracted attention due to diverse applications, including water-repellent and biocompatible surfaces, and materials for controlled drug release. Tremendous techniques have been attempted to impart superhydrophobicity, including lithographic patterning, plasma etching, and chemical vapor deposition. Previously we reported a simple strategy to prepare superhydrophobic surfaces by spray-coating a composite solution of fluorinated silica particles and fluoroalkoxysilane monomers. To extend the utility of such sol-gel-derived superhydrophobic materials, we additionally impart nitric oxide (NO) release ability, a potent anticancer, antimicrobial, and anti-thrombogenic agent. The modulated surfaces are characterized in terms of surface wettability, surface topography, physical durability, and NO release kinetics. Finally, antimicrobial activity of NO-releasing superhydrophobic coatings is demonstrated. |
