Journal
LANGMUIR
Volume 29, Issue 42, Pages 12959-12968Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la402349r
Keywords
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Funding
- Texas AM University
- Texas Engineering Experiment Station
- Air Force Office
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Layer-by-layer assembly of films containing metal ions was investigated. A complex between various metal ions and branched polyethyleneimine is formed in solution and then assembled into multilayer films with poly(acrylic acid). The metal ligand complex formation results in brightly colored materials that deposit as thick layers. Cu2+-containing films were chosen as a model for studying the disassembly of these films in response to various stimuli, including pH, salt, and surfactants. The range of pH instability corresponds to the pH range over which pores are formed in the film. We demonstrate controllable disassembly of these materials, which could be used for antifungal or antibacterial applications.
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