Highly efficient Förster resonance energy transfer between carbon nanoparticles and europium–tetracycline complex

Lopez, T; González, Ángeles Fernández; Dı́az-Garcı́a, Marta Elena; Badía‐Laiño, Rosana

doi:10.1016/j.carbon.2015.06.066

Cited by 18 publications

(7 citation statements)

References 36 publications

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“…The TCDs resulted in having excitation-independent emissions, with the maximum emission at 426 nm and the maximum excitation at 343 nm in aqueous media and 430 nm and 344 nm, respectively, in PBS, suggesting a slight stabilization of the surface-excited states due to the presence of the buffer. This absorption wavelength is attributable to n-π* transitions from C=O bonds [23]. This excitation independency has already been described in carbon dots and is explained by the conjugated π-system acting as a center for quantum confinement and the absorption of photons, whereas N-containing and Ocontaining surface groups provide different vibration relaxations [25].…”

Section: Spectroscopic Characterizationsupporting

confidence: 56%

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Biocompatibility and Antioxidant Capabilities of Carbon Dots Obtained from Tomato (Solanum lycopersicum)

et al. 2022

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Since their discovery in 2004, carbon dots have attracted strong interest in the scientific community due to their characteristic properties, particularly their luminescence and their ease of synthesis and derivatization. Carbon dots can be obtained from different carbon sources, including natural products, resulting in a so-called ’green synthesis’. In this work, we obtain carbon dots from tomato juice in order to obtain nanoparticles with the antioxidant capabilities of the natural antioxidants present in that fruit. The obtained material is characterized regarding nanoparticle size distribution, morphology, surface functional groups and optic properties. Antioxidant properties are also evaluated through the DPPH method and their cytotoxicity is checked against human dermal fibroblast and A549 cell-lines. The results indicate that carbon dots obtained from tomato have a higher antioxidant power than other already-published antioxidant carbon dots. The bandgap of the synthesized materials was also estimated and coherent with the literature values. Moreover, carbon dots obtained from tomato juice are barely toxic for healthy cells up to 72 h, while they induce a certain cytotoxicity in A549 lung carcinoma cells.

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Section: Spectroscopic Characterizationsupporting

confidence: 56%

“…The C-O bond is also confirmed by the presence of bands at 1229 cm −1 and 1360 cm −1 belonging to the flexion vibration of C-O bond. The small spikes at 1750 cm −1 , 1150 cm −1 and 1100 cm −1 suggest the presence of ester groups -COO − too [23].…”

Section: Surface Characterizationmentioning

confidence: 96%

Biocompatibility and Antioxidant Capabilities of Carbon Dots Obtained from Tomato (Solanum lycopersicum)

et al. 2022

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“…The possible radical scavenging activity mechanisms were outlined for both aqueous and oil media. These results, along with the unique optical properties of CDs, excellent photostability, low toxicity and environmental friendliness [ 27 ] may open a way for designing new luminescent CDs with improved antioxidant properties for biomedical, bioimaging, chemical and industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Green Carbon Dots for Scavenging Radical Oxygen Species in Aqueous and Oil Samples

2020

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Carbon dots (CDs) due to their unique optical features, chemical stability and low environmental hazard are applied in different fields such as metal ion sensing, photo-catalysis, bio-imaging and tribology, among others. The aims of the present research were to obtain CDs from vegetable wastes (tea and grapes) as carbon sources and to explore their potential properties as radical scavengers. CDs from glutathione/citric acid (GCDs) were synthetized for comparison purposes. The CDs were investigated for their chemical structure, morphology, optical and electronical properties. The antioxidant activity has been explored by DPPH and Folin-Ciocelteau assays in aqueous media. Due to their solubility in oil, the CDs prepared from tea wastes and GCDs were assayed as antioxidants in a mineral oil lubricant by potentiometric determination of the peroxide value. CDs from tea wastes and GCDs exhibited good antioxidant properties both in aqueous and oil media. Possible mechanisms, such as C-addition to double bonds, H-abstraction and SOMO-CDs conduction band interaction, were proposed for the CDs radical scavenging activity. CDs from natural sources open new application pathways as antioxidant green additives.

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“…In particular, Eu(III) complexes offer great advantages due to their narrow emission bands at long wavelengths, large Stokes shifts, and long photoluminescence lifetimes. On the other hand, carbon nanoparticles have attracted great interest among scientists not only due to their intrinsic photoluminescent properties, high photo- and chemostability, high dispersibility, simplicity of synthesis, and possibility of surface functionalization and doping but also due to their biodegradability, reduced cytotoxicity, and low environmental impact [ 1 – 3 ]. Europium and carbon dots (CDs) have already been brought together, studying the interaction between CDs and the complex between europium and tetracycline (TC).…”

Section: Introductionmentioning

confidence: 99%

“…Europium and carbon dots (CDs) have already been brought together, studying the interaction between CDs and the complex between europium and tetracycline (TC). The interaction of this type of complex with CDs has also, at the same time, been used to obtain interesting information on stability constants, energy transfer efficiency, and relative distance for the CDs-EuTC association that have helped to delve into the mechanisms that originate the photoluminescent phenomena observed in CDs [ 3 ]. Likewise, that knowledge was exploited for determining TC using Eu-doped CDs [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Modified lanthanide-doped carbon dots as a novel nanochemosensor for efficient detection of water in toluene and its potential application in lubricant base oils

et al. 2023

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A fast and efficient method was developed for obtaining europium(III)-doped surface-modified carbon dots with a hydrophobic coating. This surface functionalization improved the dispersibility of the nanoparticles in non-polar media, as well as modified the accessibility of water molecules to the europium ions. These two features allowed studying the application of doped carbon dots as moisture nanochemosensor, demonstrating high stability over time of both the photoluminescent signal intensity and the stability of the dispersions. The developed nanochemosensor was used to determine water in toluene with a detection limit of 8.5 × 10−4 M and a quantification limit of 2.4 × 10−3 M. The proposed system matches and even improves other methodologies for water determination in organic solvents; it has a low detection limit and a fast response time (almost instantaneous) and requires neither expensive material nor trained personnel. The results suggest a promising future for the development of a new sensing phase for moisture determination in lubricant base oil. Graphical Abstract

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Highly efficient Förster resonance energy transfer between carbon nanoparticles and europium–tetracycline complex

Cited by 18 publications

References 36 publications

Biocompatibility and Antioxidant Capabilities of Carbon Dots Obtained from Tomato (Solanum lycopersicum)

Biocompatibility and Antioxidant Capabilities of Carbon Dots Obtained from Tomato (Solanum lycopersicum)

Synthesis and Characterization of Green Carbon Dots for Scavenging Radical Oxygen Species in Aqueous and Oil Samples

Modified lanthanide-doped carbon dots as a novel nanochemosensor for efficient detection of water in toluene and its potential application in lubricant base oils

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