标题：Studies on interaction and illumination damage of CS-Fe3O4@ZnS:Mn to bovine serum albumin作者：Liu, Li; Xiao, Ling;Zhu, Hua-Yue; Shi, Xiao-Wen
来源出版物：JOURNAL OF NANOPARTICLE RESEARCH 卷：15 期：1 文献编号：1394 DOI：10.1007/s11051-012-1394-3 出版年：JAN 2013
摘要：In this study, the interaction of chitosan (CS) coated CS-Fe3O4@ZnS:Mn magnetic-fluorescent 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 CS-Fe3O4@ZnS:Mn MFNPs under UV illumination were also obtained. The results show that the dominating fluorescence quenching mechanism of CS-Fe3O4@ZnS:Mn MFNPs with BSA belongs to static quenching. Fluorescence resonance energy transfer (FRET) occurred from BSA to CS-Fe3O4@ZnS:Mn MFNPs. The thermodynamic parameters indicated that electrostatic interaction play major roles in CS-Fe3O4@ZnS:Mn-BSA, while binding processes exist spontaneously. In addition, the damage of CS-Fe3O4@ZnS: Mn 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 CS-Fe3O4@ZnS:Mn 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 CS-Fe3O4@ZnS:Mn MFNPs under UV illumination is mainly a result of a photo-induced free radical procedure.
作者关键词：Magnetic-fluorescent nanoparticles, Bovine serum albumin (BSA), Interaction, UV illumination, Reactive oxygen species (ROS)
扩展关键词：SEMICONDUCTOR QUANTUM DOTS; VISIBLE-LIGHT IRRADIATION; RESONANCE ENERGY-TRANSFER; SPECTROSCOPIC TECHNIQUES; MAGNETIC NANOPARTICLES; ULTRASONIC IRRADIATION; AQUEOUS-MEDIA; FLUORESCENCE; PROTEIN; NANOCOMPOSITES
通讯作者地址：Xiao, Ling; Luojia Mt Wuchang, Wuhan 430072, Hubei, Peoples R China.
电子邮件地址：email@example.com; firstname.lastname@example.org; email@example.com; firstname.lastname@example.org
[Liu, Li; Xiao, Ling; Zhu, Hua-Yue; Shi, Xiao-Wen] Wuhan Univ, Coll Resource & Environm Sci, Hubei Biomass Resource Chem & Environm Biotechnol, Wuhan 430072, Peoples R China.
[Liu, Li; Xiao, Ling; Zhu, Hua-Yue; Shi, Xiao-Wen] Luojia Mt Wuchang, Wuhan*430072*,Hubei, Peoples RChina.
研究方向：Chemistry; Science & Technology - Other Topics; Materials Science
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