This presentation will introduce a sol-gel co-assembly approach that results in large-scale, highly ordered coatings with embedded, uniformly distributed, and accessible nanoparticles. The unique coloration of these inverse opal films combines iridescence with plasmonic effects. The composition and optical properties of these films are demonstrated to be locally tunable using selective functionalization of the doped opals. The latter exhibit a sharply defined threshold wettability for infiltration. This liquid-specific wetting behavior naturally couples to macroscopic color changes. We are exploiting this effect in the development of simple and low-cost colorimetric indicators for liquid detection and encryption, as a tag for low-cost monitoring of tampering or material aging, and in the design of novel, highly stable heterogeneous catalysts.

Inverse-opal structures for photonic, catalytic, and sensing applications

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.