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High-Yield Spreading of Water-Miscible Solvents on Water for Langmuir–Blodgett Assembly

Langmuir–Blodgett (LB) assembly is a classical molecular thin-film processing technique, in which the material is spread onto water surface from a volatile, water-immiscible solvent to create floating monolayers that can be later transferred to solid substrates. LB has also been applied to prepare colloidal thin films with an unparalleled level of microstructural control and thickness, which has enabled the discovery of many exciting collective properties of nanoparticles and the construction of bulk nanostructured materials. To maximize the benefits of LB assembly, the nanoparticles should be well dispersed in both the spreading solvent and on water. This is quite challenging since colloids usually need contrasting surface properties in order to be stable in the water-hating organic solvents and on water surface. In addition, many organic and polymeric nanostructures dissolve in those organic solvents and cannot be processed directly. Using water-liking spreading solvents can avoid this dilemma. However,...

Authors:   Hua-Li Nie; Xuan Dou; Zhihong Tang; Hee Dong Jang; Jiaxing Huang
Journal:   Journal of the American Chemical Society
Year:   2015
DOI:   10.1021/jacs.5b06052
Publication date:   14-Aug-2015
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