상세정보
학술지
Stimuli-Responsive Magneto-/Electro-Chromatic Color-Tunable Hydrophobic Surface Modified Fe3O4@SiO2 Core-Shell Nanoparticles for Reflective Display Approaches
- 발행일
- 201701
- 출처
- RSC Advances, v.7 no.12, pp.6988-6993
- ISSN
- 2046-2069
- 출판사
- Royal Society of Chemistry (RSC)
- 협약과제
- 14PB6200, 풀컬러 색변환 전자스킨을 위한 콜로이드 광결정 필름 소재 개발, 류호준
- 초록
- 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.
- KSP 제안 키워드
- CIE chromaticity coordinates, Color changes, Color tunable, Dielectric medium, Dispersing agent, Display applications, Hydrophobic surface, Liquid medium, Low dielectric, Magneto-chromatic, Modified magnetite nanoparticles