(State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012,China)
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Abstract:
The layer by layer (LbL) assembly, which involves alternate deposition of species with complementary groups, has been demonstrated to be a convenient and versatile method to fabricate functional film materials with precise control of the chemical composition and structure. The LbL assembly is usually employed as a method for ultrathin film fabrication. Compared with ultrathin films, the LbL assembled films with micrometerthickness have the irreplaceable advantages of high loading capacity, enhanced mechanical robustness, convenience in tailoring micro and nanoscaled hierarchical structures and integrating multiple functions into one film. We demonstrate herein that building blocks with large dimensions, including polymeric complexes, large sized inorganic particles and particle aggregates, can be LbL assembled to rapidly fabricate micrometer thick composite films.