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Flexible and Iridescent Chiral Nematic Mesoporous Organosilica Films

By Kevin E. Shopsowitz (2012323), Wadood Y. Hamad (1882510) and Mark J. MacLachlan (1263879)


Nanocrystalline cellulose (NCC) has been used to template ethylene-bridged mesoporous organosilica films with long-range chirality and photonic properties. The structural color of the organosilica films results from their chiral nematic ordering, can be varied across the entire visible spectrum, and responds to the presence of chemicals within the mesopores. To synthesize these materials, acid hydrolysis was used to remove the NCC template without disrupting the organosilica framework. The resulting mesoporous organosilica films are much more flexible than brittle mesoporous silica films templated by NCC. These materials are the first of a novel family of chiral mesoporous organosilicas with photonic properties

Topics: Biochemistry, Medicine, Microbiology, Pharmacology, Evolutionary Biology, Sociology, Immunology, Inorganic Chemistry, Virology, Space Science, Environmental Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, mesoporous silica films templated, organosilica films results, Iridescent Chiral Nematic Mesoporous Organosilica FilmsNanocrystalline cellulose, material, photonic properties, mesoporous organosilica films, NCC, chiral mesoporous organosilicas
Year: 2012
DOI identifier: 10.1021/ja210355v.s001
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Provided by: FigShare
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