期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 19, 页码 5618-5622出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201500277
关键词
cellulose nanocrystals; chiral films; nanoparticles; self-assembly
资金
- NSERC Canada
The entropically driven coassembly of nanorods (cellulose nanocrystals, CNCs) and nanospheres (dye-labeled spherical latex nanoparticles, NPs) was studied in aqueous suspensions and in solid films. In mixed CNC-latex suspensions, phase separation into an isotropic latex-NP-rich and a chiral nematic CNC-rich phase took place; the latter contained a significant amount of latex NPs. Drying the mixed suspension resulted in CNC-latex films with planar disordered layers of latex NPs, which alternated with chiral nematic CNC-rich regions. In addition, fluorescent latex NPs were embedded in the chiral nematic domains. The stratified morphology of the films, together with a random distribution of latex NPs in the anisotropic phase, led to the films having close-to-uniform fluorescence, birefringence, and circular dichroism properties.
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