Topics

Carbon dots from citric acid and its intermediates formed by thermal decomposition.

08:00 EDT 29th June 2019 | BioPortfolio

Summary of "Carbon dots from citric acid and its intermediates formed by thermal decomposition."

Thermal decomposition of citric acid is one of the most common syntheses of fluorescent C-dots; the reaction pathway is, however, quite complex and the details are still far from being understood. For instance, several intermediates form during the process and they also give rise to fluorescent species. In the present work, the formation of fluorescent C-dots from citric acid has been studied as a function of reaction time by coupling infrared analysis, X-ray photoelectron spectroscopy, liquid chromatography/mass spectroscopy (LC/MS) with the change of the optical properties, absorption and emission. The reaction intermediates, which have been identified at different stages, produce two main emissive species, in the green and blue, as also indicated by the decay time analysis. C-dots from the intermediates have also been synthesised via thermal decomposition observing an emission maximum around 450 nm. The citric acid C-dots in water have shown short temporal stability, but their functionalization with 3-aminopropyltriethoxysilane has reduced the quenching. The understanding of the citric acid thermal decomposition reaction is expected to improve the control and reproducibility of C-dots synthesis.

Affiliation

Journal Details

This article was published in the following journal.

Name: Chemistry (Weinheim an der Bergstrasse, Germany)
ISSN: 1521-3765
Pages:

Links

DeepDyve research library

PubMed Articles [14670 Associated PubMed Articles listed on BioPortfolio]

A high-efficiency corrosion inhibitor of N-doped citric acid-based carbon dots for mild steel in hydrochloric acid environment.

Novel N-doped carbon dots (CDs) were obtained through pyrolysis of ammonium citrate at 180 °C for 1, 2 and 3 h, and their corrosion inhibition effect on Q235 steel in 1 M HCl solution were evaluated ...

Carbon nitride nanoplatelet photocatalysts heterostructured with B-doped carbon nanodots for enhanced photodegradation of organic pollutants.

Decorating electron-accepting materials on carbon nitride (CN) is a promising strategy to construct heterostructure catalysts for improved photocatalytic abilities. In this study, B-doped carbon-dots ...

A Novel Application of Fluorine Doped Carbon Dots Combining Vortex-Assisted Liquid-Liquid Microextraction for Determination of 4-Nitrophenol with Spectrofluorimetric Method.

A simple and fast vortex-assisted liquid-liquid microextraction (VA-LLME) combining with fluorescent carbon dots have been developed for the determination 4-nitrophenol (4-NP). The high fluorescent qu...

Folic Acid-conjugated nitrogen-doped graphene quantum dots as fluorescent diagnostic material for MCF-7 cells.

This paper reports the preparation and application of folic acid-conjugated nitrogen-doped graphene quantum dot as a fluorescent diagnostic material for MCF-7 cells of breast cancer. Nitrogen-doped gr...

Single-step synthesis of highly photoluminescent carbon dots for rapid detection of Hg with excellent sensitivity.

Carbon dots (C-dots) are superior in the aspects of excellent water solubility, good biocompatibility, environmentally friendliness and non-blinking fluorescence. In this work, highly photoluminescent...

Clinical Trials [4350 Associated Clinical Trials listed on BioPortfolio]

The Influence of Citric Acid Bone Surface Etching and Bone Defect Fill on GCF BMP-2 Release Profile

This study evaluates the effect of citric acid on bone surface of infrabony defects when used for 30 seconds at ph 1 and 50% concentration before the application of bovine derived xenograf...

The Diagnostic Validity of the Urea Breath Test

1. To compare the diagnostic accuracy of the 13C-Urea breath test between using the citric acid as test meal and controlled group by endoscopic biopsy methods(histology, CLOtest...

Effect of Citric Acid Demineralization on Autogenous Bone Blocks Consolidation in Humans

This study evaluates the effect of citric acid demineralization in autogenous bone blocks consolidation. Half of participants will receive citric acid treatment at the bone block and recip...

Mitochondrial Cocktail for Gulf War Illness

The purpose of this study is to develop preliminary evidence, such as effect size and variance estimates, to guide successful conduct of a properly-powered clinical trial to assess the ben...

Efficacy and Safety Clinical Trial of the Combination of Acetylsalicylic Acid, Sodium Bicarbonate and Citric Acid, Produced by Geolab Pharmaceutical Industries Ltd., Compared to Acetylsalicylic Acid (Aspirin ® - Bayer) in Patients With Episodic Tension-t

This study aims is to evaluate, two hours after a single administration, the rate of sustained response produced by the association Geolab consisting of acetylsalicylic acid, sodium bicarb...

Medical and Biotech [MESH] Definitions

A series of oxidative reactions in the breakdown of acetyl units derived from GLUCOSE; FATTY ACIDS; or AMINO ACIDS by means of tricarboxylic acid intermediates. The end products are CARBON DIOXIDE, water, and energy in the form of phosphate bonds.

A key intermediate in metabolism. It is an acid compound found in citrus fruits. The salts of citric acid (citrates) can be used as anticoagulants due to their calcium chelating ability.

Organic compounds that are acyclic and contain three acid groups. A member of this class is citric acid which is the first product formed by reaction of pyruvate and oxaloacetate. (From Lehninger, Principles of Biochemistry, 1982, p443)

Porphyrinogens which are intermediates in heme biosynthesis. They have four acetic acid and four propionic acid side chains attached to the pyrrole rings. Uroporphyrinogen I and III are formed from polypyrryl methane in the presence of uroporphyrinogen III cosynthetase and uroporphyrin I synthetase, respectively. They can yield uroporphyrins by autooxidation or coproporphyrinogens by decarboxylation.

A dicarboxylic acid ketone that is an important metabolic intermediate of the CITRIC ACID CYCLE. It can be converted to ASPARTIC ACID by ASPARTATE TRANSAMINASE.

Quick Search


DeepDyve research library

Relevant Topics

Radiology
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...

Multiple Sclerosis MS
Multiple sclerosis (MS) is the most common disabling neurological condition affecting 100,000 young adults in the UK. The condition results from autoimmune damage to myelin, causing interference in nerve signaling. Symptoms experienced depend on the pa...


Searches Linking to this Article