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Issue 100, 2015
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Differentiation of multi-metal ions based on fluorescent dual-emission carbon nanodots

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Abstract

A new fluorescent nanosensor for the selective determination and differentiation of Fe3+, Bi3+ and Al3+ was reported based on dual-emission carbon nanodots (DECNDs), which contained blue emitters (λex = 315 nm, λem = 386 nm) and yellow emitters (λex = 365 nm, λem = 530 nm). In this assay, Fe3+ could quench the fluorescence of the blue emitters; Bi3+ and Al3+ could be differentiated by the yellow emitters, such as the fluorescence dropping for Bi3+, and the blue-shifted emission upon the addition of Al3+ with signal amplification. The different responses were considered to be associated with the various ligands on the two emitters. Moreover, this sensing system also exhibited good sensitivity and selectivity. Finally, the present method was used to detect Fe3+, Bi3+ and Al3+ in common drugs.

Graphical abstract: Differentiation of multi-metal ions based on fluorescent dual-emission carbon nanodots

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Supplementary files

Article information


Submitted
14 Aug 2015
Accepted
17 Sep 2015
First published
18 Sep 2015

RSC Adv., 2015,5, 82570-82575
Article type
Paper

Differentiation of multi-metal ions based on fluorescent dual-emission carbon nanodots

F. Qu, S. Wang, D. Liu and J. You, RSC Adv., 2015, 5, 82570
DOI: 10.1039/C5RA16373K

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