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Issue 22, 2011
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Is black iron oxide nanoparticle always a light absorber?

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Abstract

Here we report the presence of an unexpected fluorescence enhancement zone (E-zone) in the mechanically mixed system of superparamagnetic iron oxide nanoparticles (SPIONs) and upconversion fluorescent nanoparticles (UCNPs). This new finding differs from the traditional consideration that black SPIONs are always strong light absorbers. Our study also showed that the quenching behavior of UCNPs in the quenching zone (Q-zone) by SPIONs is surface state-dependent, with a lower quenching effect when UCNPs was shielded with a hydrophilic silica shell.

Graphical abstract: Is black iron oxide nanoparticle always a light absorber?

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Publication details

The article was received on 28 Jan 2011, accepted on 24 Mar 2011 and first published on 26 Apr 2011


Article type: Paper
DOI: 10.1039/C1JM10437C
Citation: J. Mater. Chem., 2011,21, 7990-7995
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    Is black iron oxide nanoparticle always a light absorber?

    F. Chen, W. Bu, L. Zhang, Y. Fan and J. Shi, J. Mater. Chem., 2011, 21, 7990
    DOI: 10.1039/C1JM10437C

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