NDLI: Multifunctional Fe<sub>3</sub>O<sub>4</sub>/Au core/satellite nanocubes: an efficient chemical synthesis, characterization and functionalization of streptavidin protein

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Dalton Transactions Vol - 46 Issue - 6

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Multifunctional Fe₃O₄/Au core/satellite nanocubes: an efficient chemical synthesis, characterization and functionalization of streptavidin protein

Content Provider	Royal Society of Chemistry (RSC)
Author	Abbas, Mohamed RamuluTorati, Sri Kim, CheolGi
Copyright Year	2017
Abstract	A novel and efficient chemical approach for the synthesis of Fe3O4/Au core/satellite nanocubes is reported. In a one-pot reaction, metallic Au nanodots were successfully deposited on the polyvinylpyrrolidone (PVP) functionalized Fe3O4 nanocube surface for the fabrication of a core/satellite structure (Fe3O4/Au) by the reduction of HAuCl4 using ammonia. Transmission electron microscopy and energy dispersive spectroscopy mapping revealed that small Au nanodots of about 2 nm average size decorated the surface of Fe3O4 nanocubes. X-ray diffraction data was used to confirm the formation of both the phases of a cubic inverse spinel structure for Fe3O4 and a bcc structure for Au in the core/satellite structure of Fe3O4/Au nanocubes. The magnetic properties of the seed Fe3O4 nanocubes and Fe3O4/Au core/satellite nanocubes were measured by using a superconducting quantum interference device at 300 K. For biological application purposes, the as-synthesized Fe3O4/Au core/satellite nanocubes were functionalized by cysteamine followed by successful immobilization of streptavidin protein as confirmed through the fluorescence confocal microscopy images.
Starting Page	2303
Ending Page	2309
Page Count	7
File Format	HTM / HTML PDF
ISSN	14779226
Volume Number	46
Issue Number	7
Journal	Dalton Transactions
DOI	10.1039/c6dt04486g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	PVP One-pot synthesis Polyvinylpyrrolidone Ammonia Transmission electron microscopy Spectroscopy X-ray crystallography Spinel Quantum tunnelling Cysteamine Streptavidin Protein Fluorescence Confocal microscopy
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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