Organic acid participation strategy for the synthesis of highly fluorescent carbon dots and their application in dual-mode determination of copper ions
Source abstract
Abstract
Abstract In-depth research on surface functionalization of carbon dots (CDs) has opened new horizons for their application in chemosensing and biosensing. However, the practicability of CDs is still limited due to their unmanageable fluorescence properties. In this study, organic acid was employed to regulate and control the fluorescence performance of CDs. A remarkable enhancement of fluorescence and redshift of the fluorescent band of CDs was observed via organic acids’ participation in the water phase preparation process. Furthermore, a colorimetric and fluorescent dual-readout strategy was constructed for the analysis of copper ions (Cu2+) based on ethylenediaminetetraacetic acid (EDTA)-regulated carbon dots. The proposed sensing system can be used in the fast detection of Cu2+ via an obvious solution color change from yellow to brown under natural light, and the trace analysis of Cu2+ can be realized by quenching the green fluorescence band with detection limit of 21 nM. The designed sensor has been employed to the analysis of Cu2+ in water and urine samples successfully, and cell imaging experiment was performed to evaluate the feasibility of biomedical applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Carbon and Quantum Dots Applications · Nanocluster Synthesis and Applications · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (46)
Show source-provided references
1. Copper signaling in the mammalian nervous system: synaptic effects10.1002/jnr.23143 ↗
2. Divalent metal ions in plant mitochondria and their role in interactions with proteins and oxidative stress-induced damage to respiratory function10.1104/pp.109.147942 ↗
3. Determination of copper and nickel in vegetable oils by direct sampling graphite furnace atomic absorption spectrometry10.1016/j.talanta.2006.05.055 ↗
4. Determination of cadmium, cobalt, copper, iron, manganese, and zinc in thyroid glands of patients with diagnosed nodular goitre using ion chromatography10.1016/j.jchromb.2009.11.014 ↗
5. On-chip electrochemical microsystems for measurements of copper and conductivity in artificial seawater10.1016/j.talanta.2013.04.057 ↗
6. A novel “turn-on” fluorometric and magnetic bi-functional strategy for ascorbic acid sensing and in vivo imaging via carbon dots-MnO2 nanosheet nanoprobe10.1016/j.talanta.2019.04.022 ↗
7. SERS-fluorescence joint spectral encoding using organic-metal-QD hybrid nanoparticles with a huge encoding capacity for high-throughput biodetection: putting theory into practice10.1021/ja208154m ↗
8. Upconversion fluorescence-SERS dual-mode tags for cellular and in vivo imaging10.1021/am500411m ↗
9. Colorimetric and fluorescent dual mode sensing of alcoholic strength in spirit samples with stimuli-responsive infinite coordination polymers10.1021/acs.analchem.5b01617 ↗
10. Red emission B, N, S-co-doped carbon dots for colorimetric and fluorescent dual mode detection of Fe3+ ions in complex biological fluids and living cells10.1021/acsami.6b15746 ↗
11. A “light-on” colorimetric assay for anion detection using the inhibitory effect of anions on the catalytic activity of metal nanoparticles for the degradation of methyl orange10.1039/C4AN01475H ↗
12. Fluorescent and colorimetric dual-readout assay for inorganic pyrophosphatase with Cu2+-triggered oxidation of o-phenylenediamine10.1021/acs.analchem.5b03848 ↗
13. Controllable and eco-friendly synthesis of P-riched carbon quantum dots and its application for copper (II) ion sensing10.1016/j.apsusc.2018.03.246 ↗
14. Dual-mode melamine detection based on gold nanoparticles aggregation-induced fluorescence “turn-on” and “turn-off” of CdTe quantum dots10.1016/j.snb.2016.08.107 ↗
15. Dual channel sensor for detection and discrimination of heavy metal ions based on colorimetric and fluorescence response of the AuNPs-DNA conjugates10.1016/j.bios.2016.05.038 ↗
16. Gold nanoparticles for the colorimetric and fluorescent detection of ions and small organic molecules10.1039/c0nr00887g ↗
17. Fabrication and application of a ratiometric and colorimetric fluorescent probe for Hg2+ based on dual-emissive metal-organic framework hybrids with carbon dots and Eu3+10.1039/C5TC04002G ↗
18. Ratiometric fluorescence and visual imaging detection of dopamine based on carbon dots/copper nanoclusters dual-emitting nanohybrids10.1016/j.talanta.2017.09.019 ↗
19. A dual-mode nanosensor based on carbon quantum dots and gold nanoparticles for discriminative detection of glutathione in human plasma10.1016/j.bios.2013.12.038 ↗
20. Ultratrace and robust visual sensor of Cd2+ ions based on the size-dependent optical properties of Au@g-CNQDs nanoparticles in mice models10.1016/j.bios.2017.12.025 ↗
21. Carbon quantum dots and their applications10.1039/C4CS00269E ↗
22. Highly fluorescent carbon dots from enokitake mushroom as multifaceted optical nanomaterials for Cr6+ and VOC detection and imaging applications10.1016/j.apsusc.2018.04.199 ↗
23. Carbon dots-assisted colorimetric and fluorometric dual-mode protocol for acetylcholinesterase activity and inhibitors screening based on the inner filter effect of silver nanoparticles10.1039/C6AN00514D ↗
24. Red, green, and blue luminescence by carbon dots: full-color emission tuning and multicolor cellular imaging10.1002/anie.201501193 ↗
25. Excitation wavelength independent visible color emission of carbon dots10.1039/C6NR09200D ↗
26. Towards efficient dual-emissive carbon dots through sulfur and nitrogen co-doped10.1039/C7TC01819C ↗
27. Triple-mode emission of carbon dots: applications for advanced anti-counterfeiting10.1002/anie.201602445 ↗
28. Controlling speciation of nitrogen in nitrogen-doped carbon dots by ferric ion catalysis for enhancing fluorescence10.1016/j.carbon.2016.09.038 ↗
29. Water-soluble and phosphorus-containing carbon dots with strong green fluorescence for cell labeling10.1039/C3TB21370F ↗
30. Photoluminescent carbon nanodots: synthesis, physicochemical properties and analytical applications10.1016/j.mattod.2015.04.005 ↗
31. Blue photoluminescence from chemically derived graphene oxide10.1002/adma.200901996 ↗
32. Synthesis of high-quality carbon nanodots from hydrophilic compounds: role of functional groups10.1039/c2cc30188a ↗
33. Deep ultraviolet photoluminescence of water-soluble self-passivated graphene quantum dots10.1021/nn300760g ↗
34. Carbon nanodots prepared from o-phenylenediamine for sensing of Cu2+ ions in cells10.1039/C4NR03213F ↗
35. Low-temperature hydrothermal synthesis of green luminescent carbon quantum dots (CQD), and optical properties of blends of the CQD with poly(3-hexylthiophene)10.1007/s11664-015-3893-3 ↗
36. Microwave-assisted facile synthesis of yellow fluorescent carbon dots from o-phenylenediamine for cell imaging and sensitive detection of Fe3+ and H2O210.1039/C6RA02554D ↗
37. Ultrafast chemical aerosol flow synthesis of biocompatible fluorescent carbon dots for bioimaging10.1039/C4TB01004C ↗
38. Carbon nanodots: synthesis, properties and applications10.1039/c2jm34690g ↗
39. On-off-on fluorescent carbon dot nanosensor for recognition of chromium(VI) and ascorbic Acid based on the inner filter effect10.1021/am4042355 ↗
40. Carbon dots with concentration-tunable multicolored photoluminescence for simultaneous detection of Fe3+ and Cu2+ ions10.1016/j.snb.2017.07.031 ↗
41. Room temperature preparation of water-soluble polydopaminepolyethyleneimine copolymer dots for selective detection of copper ions10.1016/j.talanta.2019.01.070 ↗
42. Green synthesis of carbon dots from prawn shells for highly selective and sensitive detection of copper ions10.1016/j.snb.2015.09.065 ↗
43. Rapid detection of an anthrax biomarker based on the recovered fluorescence of carbon dot–Cu(II) systems10.1039/C7TC01058C ↗
44. Carbon-dot-loaded alginate gels as recoverable probes: fabrication and mechanism of fluorescent detection10.1021/la402647t ↗
45. Sensitive and selective detection of copper ions with highly stable polyethyleneimine-protected silver nanoclusters10.1021/ac402158j ↗
46. Full-colour carbon dots: from energy-efficient synthesis to concentration-dependent photoluminescence properties10.1039/C7CC00461C ↗