Self-assemblies of nanoscale colloidal building blocks attract increasing attention for the creation of various superstructures such as clusters, superlattices, and chains. For example, patchy micelles which can be achieved from core-crosslinked spherical micelles of diblock copolymers can be polymerized to form supracolloidal chains. In addition, such superstructures themselves can be employed as building blocks for large-scale materials having nanostructures. This strategy offers structural hierarchy in nanomaterials to enhance their functional complexity. In this study, we demonstrated macroscopic thin films from supracolloidal chains of patchy micelles of diblock copolymers. First, we produced supracolloidal chains by polymerizing patchy micelles induced from core-crosslinked spherical micelles. Then, by spin-coating these supracolloidal chains onto a solid substrate, we were able to obtain thin films which have hierarchical structures consisting of nanoscale micelles, microscale chains, and macroscale networks. We also demonstrated blended thin films by mixing pure supracolloidal chains with ones having nanoparticles in the micellar cores.

Macroscopic thin films from supracolloidal chains of diblock copolymer micelles

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.