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Journal Article
Stimuli-Responsive Magneto-/Electro-Chromatic Color-Tunable Hydrophobic Surface Modified Fe3O4@SiO2 Core-Shell Nanoparticles for Reflective Display Approaches
- Issue Date
- 2017-01
- Citation
- RSC Advances, v.7, no.12, pp.6988-6993
- ISSN
- 2046-2069
- Publisher
- Royal Society of Chemistry (RSC)
- Language
- English
- Type
- Journal Article
- Abstract
- In order to provide stimuli-responsive properties under magnetic- and electric-forces enabling reflective color-changes in a liquid medium, the surface of silica coated-iron oxide core-shell nanoparticles (Fe3O4@SiO2) is successfully modified with two-different types of silane coupling agents to improve the dispersion stability as well as the color change strength as a result of the effectively increased repulsion. A stimuli-responsive magneto- and electro-chromatic ink is prepared by mixing hydrophobic surface modified Fe3O4@SiO2-Fx (x = 0 and 13) core-shell nanoparticles and a dispersing agent in a low dielectric medium (LDM). The magneto-chromatic and electro-chromatic stimuli-responsive properties are visually confirmed. Moreover, the optical reflective color spectra and color gamut calculated from the CIE chromaticity coordinates of the hydrophobic surface modified Fe3O4@SiO2-F13 core-shell nanoparticles (with "F moiety" in the molecular structure) under an applied voltage range of 0 V to 10 V show that the hydrophobic surface modified magnetite nanoparticles are promising candidates for reflective display applications.
This work is distributed under the term of Creative Commons License (CCL)
(CC BY NC)
(CC BY NC)
