Synthesis and characterization of self-assembled monolayer and bilayer carboxyl-group functionalized magnetic nanoparticles

L. Li; K. Y. Mak; Chi Wah Leung; K. Y. Chan; W. K. Chan; W. Zhong; P. W.T. Pong

doi:10.1109/TMAG.2012.2196504

Synthesis and characterization of self-assembled monolayer and bilayer carboxyl-group functionalized magnetic nanoparticles

L. Li, K. Y. Mak, Chi Wah Leung, K. Y. Chan, W. K. Chan, W. Zhong, P. W.T. Pong

Research output: Journal article publication › Journal article › Academic research › peer-review

16 Citations (Scopus)

Abstract

Magnetic nanoparticles functionalized with carboxyl-group have considerable potential to be used as bio-labels due to their conjugation abilities with proteins. Here, we synthesized the iron oxide nanoparticles functionalized with carboxyl groups through self-assembled monolayer coating using citric acid and self-assembled bilayer coating using fatty acids. Their dimension, hydrodynamic size, surface property, and magnetic behavior were characterized through transmission electron microscopy, dynamic light scattering, Fourier transform infrared spectroscopy, thermal gravimetric analysis, and vibrating sample magnetometry. We also confirmed the binding ability of these nanoparticles with bovine serum albumin on thin gold film.

Original language	English
Article number	6332897
Pages (from-to)	3299-3302
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	48
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2012.2196504
Publication status	Published - 29 Oct 2012

Keywords

Citric acid
Fatty acid
Magnetic nanoparticle
Self-assembled

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

More information

10.1109/TMAG.2012.2196504

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AU - Li, L.

AU - Mak, K. Y.

AU - Leung, Chi Wah

AU - Chan, K. Y.

AU - Chan, W. K.

AU - Zhong, W.

AU - Pong, P. W.T.

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AB - Magnetic nanoparticles functionalized with carboxyl-group have considerable potential to be used as bio-labels due to their conjugation abilities with proteins. Here, we synthesized the iron oxide nanoparticles functionalized with carboxyl groups through self-assembled monolayer coating using citric acid and self-assembled bilayer coating using fatty acids. Their dimension, hydrodynamic size, surface property, and magnetic behavior were characterized through transmission electron microscopy, dynamic light scattering, Fourier transform infrared spectroscopy, thermal gravimetric analysis, and vibrating sample magnetometry. We also confirmed the binding ability of these nanoparticles with bovine serum albumin on thin gold film.

KW - Citric acid

KW - Fatty acid

KW - Magnetic nanoparticle

KW - Self-assembled

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JO - IEEE Transactions on Magnetics

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ER -

Synthesis and characterization of self-assembled monolayer and bilayer carboxyl-group functionalized magnetic nanoparticles

Abstract

Keywords

ASJC Scopus subject areas

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