Journal
RECENT PATENTS ON NANOTECHNOLOGY
Volume 6, Issue 3, Pages 159-168Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/187221012803531574
Keywords
Chemical exfoliation; layered double hydroxides; nanosheets; self-assembly
Funding
- World Premier International Research Center (WPI)
- initiative on Materials Nanoarchitectonics, MEXT, Japan
- Japan Science and Technology Agency (JST)
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Layered double hydroxides, a rare family of anion-exchangeable functional materials with broad application prospects, have received much attention both in academic research reports and technological patents. It was recently discovered that they could be exfoliated into unilamellar nanosheets in different solvents. Especially, well-defined LDH nanosheets can be obtained through total delamination, in formamide, of large-sized crystallites prepared from homogeneous precipitation using hydrolysis agents. Bearing a positive charge at a two-dimensional molecular scale, layered double hydroxide nanosheets can be used as a model system for electrostatic layer-by-layer assembly in combination with polyanionic counterparts (polymer, DNA, oxide nanosheets, etc.) for various functional nanoarchitectures, such as lamellar aggregates, multilayer nanofilms and nanoshells.
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