Superatom Paramagnetism Enables Gold Nanocluster Heating in Applied Radiofrequency Fields

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• 作者：Ruthanne S. McCoy ; Sam Choi ; George Collins ; Bruce J. Ackerson ; Christopher J. Ackerson
• 刊名：ACS Nano
• 出版年：2013
• 出版时间：March 26, 2013
• 年：2013
• 卷：7
• 期：3
• 页码：2610-2616
• 全文大小：322K
• 年卷期：v.7,no.3(March 26, 2013)
• ISSN：1936-086X

文摘

The Au<sub>102sub>(pMBA)<sub>44sub> nanocluster becomes a superatom paramagnet after chemical oxidation. Solutions of paramagnetic Au<sub>102sub>(pMBA)<sub>44sub> heat in an oscillating magnetic field component of an RF field, but not in the electric component. Combined, these experiments suggest that paramagnetic Au<sub>102sub>(pMBA)<sub>44sub> heats through interactions of spin magnetic moment with an external oscillating magnetic field. These results may clarify some current controversy regarding gold nanoparticle heating in radiofrequency fields.

Keywords:

gold nanoparticles; hyperthermal therapy; radiofrequency; gold nanoclusters