Foam Films Obtained with Ionic Liquid

Bu, Weifeng; Jin, Jian; Ichinose, Izumi

doi:10.1002/anie.200704235

Cited by 9 publications

(2 citation statements)

References 34 publications

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“…2, 3 Various methods have been developed to prepare free-standing ultrathin nanoparticle films. [4][5][6][7][8][9][10][11] Among them, self-assembling free-standing polymer, nanoparticles and molecules thin films at air-water [4][5][6][7][8] and liquid-liquid interfaces [9][10][11] through specific chemical and physical interactions, reactions, and Langmuir-Blodgett techniques, 12,13 have been comprehensively investigated. Except the self-assembling at interface techniques, sacrificial layer process has been applied frequently utilized to prepare plenty functional free-standing films.…”

Section: Introductionmentioning

confidence: 99%

Ultrathin free-standing close-packed gold nanoparticle films: Conductivity and Raman scattering enhancement

Huang

Peng

et al. 2011

Nanoscale

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A simple filtration technique was developed to prepare large scale free-standing close-packed gold nanoparticle ultrathin films using metal hydroxide nanostrands as both barrier layer and sacrificial layer. As thin as 70 nm, centimeter scale robust free-standing gold nanoparticle thin film was obtained. The thickness of the films could be easily tuned by the filtration volumes. The electronic conductivities of these films varied with the size of the gold nanoparticles, post-treatment temperature, and thickness, respectively. The conductivity of the film prepared from 20 nm gold nanoparticles is higher than that of the film prepared from 40 nm gold nanoparticle by filtering the same filtration volume of their solution, respectively. Their conductivities are comparable to that of the 220 nm thick ITO film. Furthermore, these films demonstrated an average surface Raman scattering enhancement up to 6.59 × 10(5) for Rhodamine 6 G molecules on the film prepared from 40 nm gold nanoparticles. Due to a lot of nano interspaces generated from the close-packed structures, two abnormal enhancements and relative stronger intensities of the asymmetrical vibrations at 1534 and 1594 cm(-1) of R6G were observed, respectively. These robust free-standing gold nanoparticle films could be easily transferred onto various solid substrates and hold the potential application for electrodes and surface enhanced Raman detectors. This method is applicable for preparation of other nanoparticle free-standing thin films.

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Section: Introductionmentioning

confidence: 99%

Ultrathin free-standing close-packed gold nanoparticle films: Conductivity and Raman scattering enhancement

Huang

Peng

et al. 2011

Nanoscale

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“…Such films are categorized into two types: common black films and Newton black films. In general, the formers have a water layer of a few tens of nanometers in thickness, and the latters contain only water of hydration [17,18]. Unlike the model systems mentioned above, a single ultrathin layer of nanoscopic water confined in a free-standing BSF can exempt from interference of other adjacent confined water environments and their surroundings as in reverse micelles.…”

Section: Introductionmentioning

confidence: 90%