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Authors
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Qie, X.W. ; Zan, M.H. ; Li, L. ; Gui, P. ; Chang, Z. ; Ge, M. ; Wang, R. ; Guo, Z. ; Dong, W.F.
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Title
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High photoluminescence nitrogen, phosphorus co-doped carbon nanodots for assessment of microbial viability
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Date
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10.06.2020
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Number
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58625
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Abstract
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Assessment of microbial viability plays a key role in human health protection. Optical imaging based on fluorescent dyes is a simple and convenient way to assess microbial viability. However, it is still a challenge to obtain stable, nontoxic and low-cost dyes. Herein, we prepared a nitrogen and phosphorus co-doped carbon nanodots (N, P-CDs) via a one-step solvothermal method. The prepared CDs possess plenty of functional groups and exhibit high stability, good biocompatibility, excellent photoluminescent and low toxicity. Especially, the properties of high quantum yield (89.9%) and highly negative surface charge (-41.9·mV) make the prepared N, P-CDs ideal materials for microbial differentiation. Compared with commercial dyes, our CDs are more stable, cost less, which can rapidly distinguish dead microorganisms from living ones with higher specificity.
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Publisher
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Colloids and Surfaces B: Biointerfaces
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Wikidata
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Citation
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Colloids and Surfaces B: Biointerfaces 191 (2020) 110987
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DOI
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https://doi.org/10.1016/J.COLSURFB.2020.110987
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Tags
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