Synthesis of bifunctional fluorescent nanohybrids of carbon dots-copper nanoclusters a facile method for Fe and Tb ratiometric detection
In this work, a dual-emission ratiometric fluorescent probe of carbon dots-copper nanoclusters (CDs-Cu NCs) nanohybrids with bifunctional features was successfully assembled through mechanical mixing. The CDs were synthesized using ascorbic acid as a carbon source, and Cu NCs were prepared using d -...
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Published in | Analytical methods Vol. 13; no. 32; pp. 3577 - 3584 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Published |
19.08.2021
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Online Access | Get full text |
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Abstract | In this work, a dual-emission ratiometric fluorescent probe of carbon dots-copper nanoclusters (CDs-Cu NCs) nanohybrids with bifunctional features was successfully assembled through mechanical mixing. The CDs were synthesized using ascorbic acid as a carbon source, and Cu NCs were prepared using
d
-penicillamine as the stabilizer and reducing agent. The as-prepared CDs-Cu NCs displayed two emission peaks (blue at 424 nm and red at 624 nm) when excited at 360 nm, and showed great stability. Interestingly, trace amount of Fe
3+
could lead to the aggregation of Cu NCs, and induce a drastic static fluorescence quenching at 624 nm because of the electrostatic combination between them, while the fluorescence of the emission peak at 424 nm remained constant. Moreover, an attractive fluorescence enhancement phenomenon at 424 nm was observed when trace Tb
3+
was added to the above system, which may due to the combination of fluorescence resonance energy transfer (FRET) and photo-induced electron transfer (PET) mechanisms. Thus, CDs-Cu NCs were applied for the ratiometric detection of Fe
3+
and Tb
3+
in aqueous solution, and the detection limit (3σ/slope) was 45 nM and 62 nM with the linear range from 0.01 to 40 μM and 0.1 to 50 μM, respectively. Furthermore, the developed sensor was successfully applied for the detection of Fe
3+
and Tb
3+
in real-water samples.
A bifunctional fluorescent nanohybrids sensor is designed to realize the simultaneous detection of Fe
3+
and Tb
3+
in the same solution. |
---|---|
AbstractList | In this work, a dual-emission ratiometric fluorescent probe of carbon dots-copper nanoclusters (CDs-Cu NCs) nanohybrids with bifunctional features was successfully assembled through mechanical mixing. The CDs were synthesized using ascorbic acid as a carbon source, and Cu NCs were prepared using
d
-penicillamine as the stabilizer and reducing agent. The as-prepared CDs-Cu NCs displayed two emission peaks (blue at 424 nm and red at 624 nm) when excited at 360 nm, and showed great stability. Interestingly, trace amount of Fe
3+
could lead to the aggregation of Cu NCs, and induce a drastic static fluorescence quenching at 624 nm because of the electrostatic combination between them, while the fluorescence of the emission peak at 424 nm remained constant. Moreover, an attractive fluorescence enhancement phenomenon at 424 nm was observed when trace Tb
3+
was added to the above system, which may due to the combination of fluorescence resonance energy transfer (FRET) and photo-induced electron transfer (PET) mechanisms. Thus, CDs-Cu NCs were applied for the ratiometric detection of Fe
3+
and Tb
3+
in aqueous solution, and the detection limit (3σ/slope) was 45 nM and 62 nM with the linear range from 0.01 to 40 μM and 0.1 to 50 μM, respectively. Furthermore, the developed sensor was successfully applied for the detection of Fe
3+
and Tb
3+
in real-water samples.
A bifunctional fluorescent nanohybrids sensor is designed to realize the simultaneous detection of Fe
3+
and Tb
3+
in the same solution. |
Author | Wang, Li Zhang, Bangwen Xu, Jia Yuan, Zeming Han, Pei Jia, Lina Dong, Jiangxue Lin, Shumin Lu, Chunxiao |
AuthorAffiliation | Key Laboratory of Analytical Science and Technology of Hebei Province College of Chemistry and Environmental Science Inner Mongolia University of Science and Technology Hebei University Analysis and Testing Center |
AuthorAffiliation_xml | – name: Analysis and Testing Center – name: College of Chemistry and Environmental Science – name: Inner Mongolia University of Science and Technology – name: Key Laboratory of Analytical Science and Technology of Hebei Province – name: Hebei University |
Author_xml | – sequence: 1 givenname: Shumin surname: Lin fullname: Lin, Shumin – sequence: 2 givenname: Jiangxue surname: Dong fullname: Dong, Jiangxue – sequence: 3 givenname: Bangwen surname: Zhang fullname: Zhang, Bangwen – sequence: 4 givenname: Zeming surname: Yuan fullname: Yuan, Zeming – sequence: 5 givenname: Chunxiao surname: Lu fullname: Lu, Chunxiao – sequence: 6 givenname: Pei surname: Han fullname: Han, Pei – sequence: 7 givenname: Jia surname: Xu fullname: Xu, Jia – sequence: 8 givenname: Lina surname: Jia fullname: Jia, Lina – sequence: 9 givenname: Li surname: Wang fullname: Wang, Li |
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Snippet | In this work, a dual-emission ratiometric fluorescent probe of carbon dots-copper nanoclusters (CDs-Cu NCs) nanohybrids with bifunctional features was... |
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