Synthesis and Characterization of Fe₃O₄-CdX (X = S, Se) Core-Shell Nanoparticles

Authors: Patel, Daksha; Chang, Yongmin; Kim, Tae Jeong; Jung, Myung-Hwa; Lee, Gang Ho

Source: Journal of Nanoscience and Nanotechnology, Volume 8, Number 9, September 2008 , pp. 4826-4829(4)

Publisher: American Scientific Publishers

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Abstract:

We report a facile one-pot synthesis of Fe₃O₄-CdX (X = S, Se) core-shell nanoparticles and characterized them with XRD, TEM, squid magnetometer, and UV-visible absorption and PL spectrometers. We observed that the core Fe₃O₄ nanoparticles showed a superparamagnetism at room temperature, whereas the shell CdX (X = S, Se) showed blue-shifts from the bulk materials in UV-visible absorption spectra, due to quantum confinement effect. These superparamagnetic and optical properties of the Fe₃O₄-CdX (X = S, Se) core-shell nanoparticles can be used for both MR and optical imagings. This dual imaging capability will increase a possibility of an early observation of disease such as cancer.

Keywords: FE3O4-CDX (X = S, SE) CORE-SHELL NANOPARTICLES; ONE-POT SYNTHESIS; SUPERPARAMAGNETISM; OPTICAL PROPERTIES

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2008.IC19

Publication date: 2008-09-01

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Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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