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Carbon Dots - Crossref

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Last Updated: 02 September 2022

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Carbon Dots Derived from Frankincense Soot for Ratiometric and Colorimetric Detection of Lead (II)

Abstract of Remarks We present a one-pot hydrothermal synthesis of carbon dots from frankincense soot's frankincense soot. Carbon dots made from frankincense have a narrow size distribution with an average size of 1. 80 nm. Without additional surface functionalization or modification, FI-CDs emit intense blue fluorescence. The fidelity of FI-CDs reveals arm-chair orientation, which is confirmed by comparing the indirect bandgap of FI-CDs to the bandgap obtained from Tauc plots. In real-life samples, we report a smartphone-assisted quantification of the fluorescence intensity change, which provides an effective method for the colorimetric testing of Pb2+.

Source link: https://doi.org/10.1088/1361-6528/ac8e76


Synthesis and properties of PI composite films using carbon quantum dots as fillers

The dielectric loss of a composite film of PI/CQDs composite film is around 0. 0018, which is about 68% less than that of a simple PI film. The dielectric loss of PI/CQD composite film has been significantly reduced, but the mechanical and thermal properties of the PI/CQD composite film largely remain unchanged. The relative movement of a PI molecular chain is impeded due to the cross-linking network that was established between CQDs and the PI molecular chain.

Source link: https://doi.org/10.1515/epoly-2022-0054


N, S-doped Graphene Quantum Dots Grafted Graphitic Carbon Nitride to Boost its Photocatalytic Hydrogen Evolution and Antibacterial Activity

Constructing heterojunction is one promising way to enhance the transfer and separation of graphitic carbon nitride carriers. The most effective 06NSG-CN composite successfully reduced the occurrence of Escherichia coli flora under visible light irradiation by superoxide and super hydroxyl radicals in this region. Nevertheless, the optimal photocatalytic hydrogen evolution under visible light has reached 50. 9 [Formula: see text]]mol/h, approximately 16. 9 times higher than pure phase CN under visible light][Formula: see text] During this period, the maximum photocatalytic hydrogen evolution has reached 50. 9 [Formula: see text][Formula: see text][Formula: see text]mol/h, about 16. 9 times as much as those of pure phase CN CN] [Formula.

Source link: https://doi.org/10.1142/s1793292022500667


The advanced multi-functional carbon dots in photoelectrochemistry based energy conversion

Abstract Carbon dots, as a unique zero-dimensional component of carbon materials, have captured a lot of interest in optoelectronic, biological, and energy related fields. Since they were a catalyst for energy conversion reactions under multi-physical conditions such as light and/or electricity, efficient surface redox reactions, and good electrical conductivity, CDs have expanded into a research frontier since they became a catalyst for energy conversion reactions under multi-physical conditions such as light and/or electricity.

Source link: https://doi.org/10.1088/2631-7990/ac8e3a


Green and Near-Infrared Dual-Mode Afterglow of Carbon Dots and Their Applications for Confidential Information Readout

Herein, we present a simple way to produce green and NIR dual-mode afterglow of carbon dots by in situ embedding o-CDs into a cyanuric acid matrix. The green and NIR afterglows of o-CDs@CA, according to additional studies, originate from thermal-activated delayed fluorescence and room temperature phosphorescence of o-CDs. However, if an optical filter was used, the NIR RTP signal can be quickly captured.

Source link: https://doi.org/10.1007/s40820-021-00718-z


Chlorophyll Detection by Localized Surface Plasmon Resonance Using Functionalized Carbon Quantum Dots Triangle Ag Nanoparticles

An optical sensor-based localized surface plasmon resonance sensor was used for accurate and selective chlorophyll detection by the incorporation of amino-functionalized carbon quantum dots and triangle silver nanoparticles. Chlorophyll detection by electrostatic interactions is enhanced by the addition of amino groups to the CQD. The AgNPs-NCQD composite was produced on the surface of the silanized glass slide using the self-assembly technique. The experimental results revealed that the AgNPs-NCQD film-based LSPR sensor detected better than AgNPs and AgNPs-CQD films with a high correlation coefficient — leading to a higher correlation coefficient.

Source link: https://doi.org/10.3390/nano12172999


Synthesis of Nitrogen-Doped Graphene Quantum Dots from Sucrose Carbonization

In recent years, the synthesis of carbon-based quantum dots has been much investigated in the literature. Despite the fact that synthesis techniques to produce highly effective carbon quantum dots and graphene quantum dots with redshifted photoluminescence have been enhanced, no studies have exploited sucrose in the production of GQDs with high PL quality. In comparison to that in undoped GQDs, it was also revealed that the level of the emission in the red area was much higher in the N-GQDs.

Source link: https://doi.org/10.3390/app12178686


Towards two-dimensional color tunability of all-solid-state electrochromic devices using carbon dots

Electrochromic machines with multicolor patterns have increasingly attracted widespread interest. The creation of multicolor patterned ECDs based on simple solutions is still a huge challenge considering the complexity of their integration of various electrochromic materials and multi-electrode designs. The fabricated ECDs can also show a stable and reversible color change in harsh environments where operating temperatures are constantly fluctuating from RT to 70°C.

Source link: https://doi.org/10.3389/fchem.2022.1001531


Green Synthesized Carbon Quantum Dots from Curcuma Longa for Ascorbic Acid Detection

The carbon dots made from curcuma longa have particle diameters of 0. 6 nm and are extremely impressive in appearance. In the presence of dopamine and ascorbic acid, the fluorescence of carbon dots is inhibited, according to the report, with dopamine being more sensitive to the fluorescence than ascorbic acid. respectively, there were no significant differences between the minimal detection thresholds for dopamine and ascorbic acid, which were 33 u03bcM.

Source link: https://doi.org/10.4028/p-7t5606


L-Cysteine Passivated Carbon Quantum Dots as Biosensor for early Stage Detection of Prostate Cancer

Citrate is a protone of prostate cancer. Green synthesized surface passivated carbon dots for the detection of Citrate as a biomarker. Citrate's hydroxyl and carboxyl cysteine passivated over the surface of carbon dots and demonstrated a cohesion like amino and free carboxyl cysteine passivated over the surface of carbon dots. Citrate content for prostate cancer cells was found by scientists using an L-cysteine passivated carbon quantum dots with various incubation times. CQDs are commonly used as a measure of cancer cells in biological samples, as a result, quenching in fluorescence intensity CQDs is reported as a result.

Source link: https://doi.org/10.4028/p-x65kwp

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions