Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 27th March 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 3, 2016
Previous Article Next Article

Ultra-small Nd3+-doped nanoparticles as near-infrared luminescent biolabels of hemin in bacteria

Author affiliations

Abstract

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.

Graphical abstract: Ultra-small Nd3+-doped nanoparticles as near-infrared luminescent biolabels of hemin in bacteria

Back to tab navigation

Supplementary files

Publication details

The article was received on 06 Sep 2015, accepted on 06 Dec 2015 and first published on 07 Dec 2015


Article type: Communication
DOI: 10.1039/C5NR06106G
Citation: Nanoscale, 2016,8, 1288-1292

  •   Request permissions

    Ultra-small Nd3+-doped nanoparticles as near-infrared luminescent biolabels of hemin in bacteria

    Y. Xi, Z. Chang, X. Ye, H. Huang, Y. Huang, Q. Xiao and H. Lin, Nanoscale, 2016, 8, 1288
    DOI: 10.1039/C5NR06106G

Search articles by author

Spotlight

Advertisements