In this brief experiment, students
create a superhydrophobic surface
as an application of polar–nonpolar interactions and redox
chemistry. Half of a zinc-galvanized steel strip is coated in copper
nanoparticles through electroless deposition. A layer of nonpolar
octadecanethiol is added to half of that copper surface. Students
classify the three resulting surfaces as polar or nonpolar using water
drops as a probe. This simple procedure illustrates introductory chemical
concepts while incorporating nanochemistry and illustrating surfaces
of increasing technological importance.
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