Janus gold nanoparticles obtained via spontaneous binary polymer shell segregation† †Electronic supplementary information (ESI) available: Experimental procedures, results of SAXS, UV-vis and DLS for NPs of different core sizes, polymer coatings and in different solvents; details of emulsification using Janus Au NPs; TEM images after silica coating of Janus Au NPs; 3D images of different stained Au NPs. See DOI: 10.1039/c5cc10454h Click here for additional data file.
نویسندگان
چکیده
Janus gold nanoparticles are of high interest because they allow directed self-assembly and display plasmonic properties. We succeeded in coating gold nanoparticles with two different polymers that form a Janus shell. The spontaneous segregation of two immiscible polymers at the surface of the nanoparticles was verified by NOESY NMR and most importantly by electron microscopy analysis in two and three dimensions. The Janus structure is additionally shown to affect the aggregation behavior of the nanoparticles.
منابع مشابه
Synthesis of open-mouthed, yolk–shell Au@AgPd nanoparticles with access to interior surfaces for enhanced electrocatalysis† †Electronic supplementary information (ESI) available: Detailed experimental procedure, supplementary TEM images and UV-vis spectra of as-prepared samples, possible formation mechanism of core–shell Au@AgPd NPs, half-encased, core–shell Au@AgPd NPs, conventional yolk–shell Au@AgPd NPs and open-mouthed, yolk–shell Au@AgPd NPs, HAADF-STEM image, HAADF-STEM-EDS images and cross-sectional compositional line profiles of the conventional YS Au@AgPd NPs, UV-vis spectra of conventional and open-mouthed YS Au@AgPd NPs obtained in different solvents of varying refractive indexes, electrocatalytic data of as-prepared samples. See DOI: 10.1039/c5sc01088h
State Key Laboratory of Crystal Materials, S China. E-mail: [email protected] Ian Wark Research Institute, University Australia † Electronic supplementary information procedure, supplementary TEM images samples, possible formation mechan half-encased, core–shell Au@AgPd NPs, and open-mouthed, yolk–shell Au@ HAADF-STEM-EDS images and cross-sect conventional YS Au@AgPd NPs, UV open-mouthed YS Au@A...
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متن کاملA systematic growth of Gold nanoseeds on Silica for Silica@Gold core-shell nanoparticles and investigation of optical properties
Metal nanoshells consists of a dielectric core surrounded by a thin noble metal shell, possess unique optical properties, which render nanoshells attractive for use in different technologies. This paper reports a facile method for growth of small gold nanoparticles on the functionalized surface of larger silica nanoparticles. Mono-dispersed silica particles and gold nanoparticles were prepared ...
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عنوان ژورنال:
دوره 52 شماره
صفحات -
تاریخ انتشار 2016