TAILIEUCHUNG - CoNiP/Au Multisegment Magnetic Nanowires: Synthesis and Aminothiophenol (4-ATP) Functionalization
The magnetic properties in CoNiP/Au multisegments nanowire were investigated. All the samples were prepared by electrodeposition method with pH of and room temperature. The electrochemical potential of CoNiP was determined by cycle voltammetary. The crystalline structure and morphology of the samples were characterized by X-ray diffraction (XRD), Scanning Electron Miroscopy (SEM) and High-resolution transmission electron microscopy (HRTEM), respectively. | VNU Journal of Science: Mathematics – Physics, Vol. 33, No. 2 (2017) 16-23 CoNiP/Au Multisegment Magnetic Nanowires: Synthesis and Aminothiophenol (4-ATP) Functionalization Do Quang Ngoc1, Hoang Thi Nu1, Luu Van Thiem2, Luu Manh Quynh1, Le Tuan Tu1,* 1 Faculty of Physics, VNU University of Science, 334 Nguyen Trai, Hanoi, Vietnam Faculty of Basic Science, Hanoi Industrial College for Textile, Garment and Fashion, Gia Lam, Hanoi 2 Received 17 March 2017 Revised 20 April 2017; Accepted 25 May 2017 Abstract: The magnetic properties in CoNiP/Au multisegments nanowire were investigated. All the samples were prepared by electrodeposition method with pH of and room temperature. The electrochemical potential of CoNiP was determined by cycle voltammetary. The crystalline structure and morphology of the samples were characterized by X-ray diffraction (XRD), Scanning Electron Miroscopy (SEM) and High-resolution transmission electron microscopy (HRTEM), respectively. The hysteresis loops were measured at room temperature using vibrating sample magnetometry (VSM). The SEM and TEM image showed that the CoNiP/Au nanowires with diameters about 50 nm. The lattice spacing of the CoNiP samples were nm. The obtained results of VSM show that, the coercivity is 1006 Oe. The 4-Aminothiophenol (4-ATP) functionalized CoNiP/Au were combined by inverse emulsion method in order to apply to biomedicine. The characteristic Surface Enhanced Raman peak positions of 4-ATP absorbed on the Au segments were occurred without any alterations, which significantly predicted attractive applicability of the colloids for biomedical labeling. Keywords: Nanowires, multisegment, electrodeposition, magnetic properties, functionalized. 1. Introduction Among these types of nanowires, multisegment nanowires play the most important role in the significant application in multiplexed bioanalysis, biosensors, magnetic cell separation and gene delivery with multiple functionalities [1]. The strength of
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