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题名: Ultra-small Nd3+-doped nanoparticles as near-infrared luminescent biolabels of hemin in bacteria
作者: Xi, YL; Chang, ZZ; Ye, XM; Huang, HY; Huang, YN; Xiao, QB(肖清波); Lin, HZ(蔺洪振)
通讯作者: Xiao, QB(肖清波)
刊名: NANOSCALE
发表日期: 2016
DOI: 10.1039/c5nr06106g
卷: 8, 期:3
收录类别: SCI ; EI
文章类型: 期刊论文
部门归属: 纳米研究国际实验室
英文摘要: Near-infrared (NIR) luminescent Nd3+-doped nanoparticles (NPs) have attracted considerable attention in bioimaging and biodetection. Here, we demonstrate sub-6 nm NaGdF4:Nd3+, Fe3+ NPs as luminescent biolabels of hemin molecules that act as the exogenous electron carriers in microbial communities. Contrary to the severe quenching of the visible luminescence for either upconverting or downconverting NPs, the Nd3+-doped NPs show superior properties in avoiding the optical absorption of hemin within the UV and visible spectral regions. A detailed examination showed that the Nd3+-doped NPs exhibit no obvious toxic effects on the microbial communities and show scarce influence on the characteristics of labeled hemin molecules in enhancing the reducing power of the fermentation system. More importantly, by monitoring the NIR luminescence of Nd3+-doped NPs, the selective accumulation of exogenous electron carriers in bacteria that are lacking reducing power has been revealed for the first time. The application of Nd3+-doped NPs as biolabels in bacteria would provide new opportunities for further unravelling the role of exogenous electron carriers in anaerobic digestion.
关键词[WOS]: UP-CONVERSION NANOPARTICLES ; ESCHERICHIA-COLI ; NANO-BIOPROBES ; BIOIMAGING PROBES ; ENZYMES ; CYTOCHROME-P450 ; NANOCRYSTALS ; THERAPY ; METHANE ; NANOPHOSPHORS
语种: 英语
JCR小类分区: 一区
WOS记录号: WOS:000368040200004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/4627
Appears in Collections:纳米研究国际实验室_蔺洪振团队_期刊论文

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Recommended Citation:
Xi, YL,Chang, ZZ,Ye, XM,et al. Ultra-small Nd3+-doped nanoparticles as near-infrared luminescent biolabels of hemin in bacteria[J]. NANOSCALE,2016,8(3).
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