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Dynamic surface properties of PEG-coated CuS nanoparticles alter their interaction with cells as revealed by surface-enhanced infrared spectroscopy

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Abstract

Characterization of the dynamic changes of the basic surface properties of nanoparticles is of great significance to reveal the interaction mechanism between nanoparticles and cells; however, it is often neglected due to the limitations of existing analytical methods. This knowledge has been renewed by using surface enhanced infrared absorption spectroscopy (SEIRAS) to study the interaction between PEG-CuS nanoparticles and living cells attached to rGO-Au modified Au films. Based on the difference spectra of cell membranes and the associated water, we clearly revealed that Cu2+ ions produced by the degradation of PEG-CuS can coordinate with PEG, thus changing the interaction between nanoparticles and cells including how and how many nanoparticles enter the cells and the sequential photothermal effect, which breaks through the limitations of the present analytical methods.

Graphical abstract: Dynamic surface properties of PEG-coated CuS nanoparticles alter their interaction with cells as revealed by surface-enhanced infrared spectroscopy

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Publication details

The article was received on 13 Jun 2019, accepted on 16 Sep 2019 and first published on 17 Sep 2019


Article type: Communication
DOI: 10.1039/C9NA00371A
Nanoscale Adv., 2019, Advance Article
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    Dynamic surface properties of PEG-coated CuS nanoparticles alter their interaction with cells as revealed by surface-enhanced infrared spectroscopy

    F. Cao, L. Wu, X. Zhang, S. Li, C. Wang, W. Zhen and X. Jiang, Nanoscale Adv., 2019, Advance Article , DOI: 10.1039/C9NA00371A

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