期刊
ADVANCED FUNCTIONAL MATERIALS
卷 23, 期 11, 页码 1393-1403出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201202727
关键词
gold nanorods; liquid crystals; self-assembly; nanorod arrays
类别
资金
- Science and Technology International Collaboration Fund
- Natural Science and Engineering Research Council (NSERC) of Canada
- Canada Foundation for Innovation (CFI)
- Manitoba Research and Innovation Fund (MRIF)
- Kent State University
- Government of Ohio
Fascinating nematic- and smectic-like self-assembled arrays are observed for gold nanorods partially capped with either laterally or terminally attached nematic liquid crystals upon slow evaporation of an organic solvent on TEM grids. These arrays can be manipulated and reoriented by applying an external magnetic field from quasi-planar to vertical similar to a Freedericksz transition of common organic nematic liquid crystals. Birefringence and thin film textures of these self-assembled gold nanorod arrays observed by polarized optical microscopy are strongly reminiscent of common organic nematic liquid crystal textures between crossed polarizers and, additionally, support the formation of ordered liquid crystal-like anisotropic superstructures. The ordering within these arrays is also confirmed in bulk samples using small angle X-ray scattering (SAXS).
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