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Title of Journal: J Nanopart Res

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Abbravation: Journal of Nanoparticle Research

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Springer Netherlands

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DOI

10.1002/ps.2780310103

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ISSN

1572-896X

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Studies on interaction and illumination damage of

Authors: Li Liu Ling Xiao HuaYue Zhu XiaoWen Shi
Publish Date: 2013/01/13
Volume: 15, Issue: 1, Pages: 1394-
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Abstract

In this study the interaction of chitosan CS coated CSFe3O4ZnSMn magneticfluorescent nanoparticles MFNPs with bovine serum albumin BSA was studied by means of ultraviolet–visible and fluorescence spectra evidences for the damage of BSA molecule in the presence of CSFe3O4ZnSMn MFNPs under UV illumination were also obtained The results show that the dominating fluorescence quenching mechanism of CSFe3O4ZnSMn MFNPs with BSA belongs to static quenching Fluorescence resonance energy transfer FRET occurred from BSA to CSFe3O4ZnSMn MFNPs The thermodynamic parameters indicated that electrostatic interaction play major roles in CSFe3O4ZnSMnBSA while binding processes exist spontaneously In addition the damage of CSFe3O4ZnSMn MFNPs to BSA molecule under UV illumination was studied under various experimental parameters It was proved that the damage of BSA is prone to happen in the presence of CSFe3O4ZnSMn MFNPs under UV illumination there is synergic effect of oxygen and UV illumination on the damage of BSA and the fluorescence quenching of BSA by CSFe3O4ZnSMn MFNPs under UV illumination is mainly a result of a photoinduced free radical procedure

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