Abstract
A new type of TiO2 nanosheet−organic complex multilayer film was successfully prepared by the Langmuir−Blodgett technique. Surface pressure−area (π−A) curves demonstrated that a stable monolayer of dioctadecyldimethylammonium bromide (DODAB) was formed on an aqueous suspension of TiO2 nanosheets derived from an exfoliated layered titanate, HxTi2-x/4□x/4O4·H2O (x ∼ 0.7; □, vacancy). The hybrid monolayer of the ammonium amphiphiles and the TiO2 nanosheet was quantitatively transferred onto a hydrophobic quartz plate to form a multilayer film. X-ray diffraction measurements confirmed the formation of an ordered structure of DODAB/TiO2 with an interlayer distance of 3.4 nm.
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