Octadecylamine and glucose-coderived hydrophobic carbon dots-modified porous silica for chromatographic separation

Chen, Jia; Yuan, Ning; Jiang, Dongliang; Qian, Lei; Liu, Bei; Tang, Weiyang; Row, Kyung Ho; Qiu, Hongdeng

doi:10.1016/j.cclet.2021.04.052

Cited by 68 publications

(21 citation statements)

References 37 publications

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“…Also, amphiphilic CDs were synthesized by using several organic solvents (like toluene, dimethylformamide, acetonitrile, etc. ), which act as the carbon precursor and solvent together, through hydrothermal synthesis methods. , However, the highest fluorescence quantum yield, an important indicator to determine the quality of carbon dots, obtained in these studies was around 35%, − which was not comparable to the quantum yields of metal-based quantum dots. , Different single or multiple carbon precursor systems, such as citric acid + phenylenediamine, cetylpyridinium chloride, cetylpyridinium bromide, and octadecylamine + glucose, were used to synthesize amphiphilic or hydrophobic CDs with high fluorescence quantum yield, − but the highest obtained quantum yield was around 47%, which can be still considered low compared to the quantum yield of their metal-based alternatives. , …”

Section: Introductionmentioning

confidence: 95%

Development of Highly Luminescent Water-Insoluble Carbon Dots by Using Calix[4]pyrrole as the Carbon Precursor and Their Potential Application in Organic Solar Cells

et al. 2022

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Carbon dots (CDs) are carbon-based fluorescent nanomaterials that are of interest in different research areas due to their low cost production and low toxicity. Considering their unique photophysical properties, hydrophobic/amphiphilic CDs are powerful alternatives to metal-based quantum dots in LED and photovoltaic cell designs. On the other hand, CDs possess a considerably high amount of surface defects that give rise to two significant drawbacks: (1) causing decrease in quantum yield (QY), a crucial drawback that limits their utilization in LEDs, and (2) affecting the efficiency of charge transfer, a significant factor that limits the use of CDs in photovoltaic cells. In this study, we synthesized highly luminescent, water-insoluble, slightly amphiphilic CDs by using a macrocyclic compound, calix[4]pyrrole, for the first time in the literature. Calix[4]pyrrole-derived CDs (CP-DOTs) were highly luminescent with a QY of over 60% and size of around 4–10 nm with graphitic structure. The high quantum yield of CP-DOTs indicated that they had less amount of surface defects. Furthermore, CP-DOTs were used as an additive in the active layer of organic solar cells (OSC). The photovoltaic parameters of OSCs improved upon addition of CDs. Our results indicated that calix[4]pyrrole is an excellent carbon precursor to synthesize highly luminescent and water-insoluble carbon dots, and CDs derived from calix[4]pyrrole are excellent candidates to improve optoelectronic devices.

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Section: Introductionmentioning

confidence: 95%

Development of Highly Luminescent Water-Insoluble Carbon Dots by Using Calix[4]pyrrole as the Carbon Precursor and Their Potential Application in Organic Solar Cells

et al. 2022

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“…Nanozymes with oxidase/peroxidase activity play a critical role in the oxidation reaction of colorless TMB to blue ox-TMB. So far, the reported nanozymes mainly include carbon-based nanomaterials (for example, graphene oxide, carbon nanotubes, , and carbon nanodots), metals (such as Au, , Pt, Ag, and Ni), metal oxides (such as CeO 2 , MnO 2 , CuO, and Mn 3 O 4 ), and other nanocomposites (such as Co 3 O 4 @CeO 2 , TiO 2 @CeOx, NPG/Cu 2 O, and magnetic nanoporous graphene). Among them, nanocomposites exhibit excellent catalytic performance due to their strong synergistic effect and rich hybrid connection with redox relationships .…”

Section: Introductionmentioning

confidence: 99%

Acetylcholinesterase Activity Monitoring and Natural Anti-neurological Disease Drug Screening via Rational Design of Deep Eutectic Solvents and CeO₂-Co(OH)₂ Nanosheets

et al. 2022

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The activity monitoring of acetylcholinesterase (AChE) and the screening of its inhibitors are critical for the diagnosis and therapy of neurological diseases. Herein, CeO2-Co(OH)2 nanosheets were synthesized for the first time in a newly designed deep eutectic solvent (DES) composed of l-proline and Ce(NO3)3·6H2O, and a colorimetric assay was developed for quantitative detection of AChE and anti-neurological disease drug screening. Impressively, CeO2-Co(OH)2 composites prepared in DESs have more prominent oxidase-like activity than Co(OH)2, CeO2, and CeO2-Co(OH)2 produced in aqueous solution. The mechanism study shows that the oxygen vacancies of CeO2-Co(OH)2 play a vital role in oxidase-like catalysis. Based on their excellent oxidase-like activity, the CeO2-Co(OH)2 nanosheets have been successfully applied for highly sensitive and selective detection of AChE with a linear range of 0.2–20 mU/mL. This strategy can also be used for inhibitor screening. The sensor displays an excellent linear response in the range of 0.001–2 μg/mL toward an irreversible inhibitor (paraoxon-ethyl). Moreover, five alkaloids, namely, berberine hydrochloride, caffeine, camptothecin, matrine, and evodiamine, were screened by using neostigmine bromide as a control; berberine hydrochloride exhibited a good inhibitory effect on AChE with an IC50 of 0.94 μM, while the other four had no obvious inhibitory effect. The mechanism of the different effects of alkaloids on inhibiting acetylcholinesterase activity was explored via molecular docking and kinetic simulation.

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“…At present, several methods have been applied for the analysis of BAs, such as LC, − capillary electrophoresis, , gas chromatography, , for which the most commonly used detectors are ultraviolet (UV), fluorescence (FLD), and mass spectrometry (MS) detectors. ,,,, Among them, LC is most widely used in the analysis (or separation) of BAs . However, some BAs such as chain aliphatic amines, aromatic amines containing benzene rings, and heterocyclic amines have very different polarities, which makes it difficult to measure all BAs with a common LC-UV or LC-FLD method and maintain good peak shapes and low limits of detection (LODs).…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh-Performance Supercritical Fluid Chromatography and Detection of Multiple Biogenic Amines in Gentamicin Sulfate: Method Development Using Computer-Assisted Modeling

2022

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In order to solve the problem of difficult separation of various biogenic amines (BAs), which have similar structures or very different polarities, in gentamicin, by conventional liquid chromatography, a new ultrahigh-performance supercritical fluid chromatography (UHPSFC) method was developed. In this method, 10 BAs were derivatized precolumn using dansyl chloride and separated using a UHPSFC system. By computational simulation, complete separation of 10 BAs was successfully achieved. Detection was performed using a photodiode array (PDA) and single-quadrupole mass spectrometry (MS) together with electrospray ionization (ESI). A wide linear range (10−2500 ng/mL) was achieved, with the limits of detection (LODs) between 1.2 and 10.0 ng/mL and the limits of quantification (LOQs) between 5.0 and 25.0 ng/mL. Apart from high sensitivity, this UHPSFC−PDA/ESI−MS detection method also displayed high accuracy, the matrix effect was reduced by an appreciable extent, and the recovery rates of the 10 BAs were between 84.1 and 117.1%. For comparison, high-performance liquid chromatography−tandem mass spectrometry (MS/MS) was also used for the detection of underivatized BAs in gentamicin, showing good linearity and high sensitivity (LODs from 0.05 to 1.00 ng/mL and LOQs from 1.00 to 12.50 ng/mL) for all BAs except for spermine and spermidine. Although single-quadrupole MS is inferior to MS/MS in terms of sensitivity, the UHPSFC method could detect more BAs. It also achieved the quantification limits required for impurity determination, demonstrating a potential strategy to offer a map overview of possible BA presence in fermentation antibiotics.

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Octadecylamine and glucose-coderived hydrophobic carbon dots-modified porous silica for chromatographic separation

Cited by 68 publications

References 37 publications

Development of Highly Luminescent Water-Insoluble Carbon Dots by Using Calix[4]pyrrole as the Carbon Precursor and Their Potential Application in Organic Solar Cells

Development of Highly Luminescent Water-Insoluble Carbon Dots by Using Calix[4]pyrrole as the Carbon Precursor and Their Potential Application in Organic Solar Cells

Acetylcholinesterase Activity Monitoring and Natural Anti-neurological Disease Drug Screening via Rational Design of Deep Eutectic Solvents and CeO₂-Co(OH)₂ Nanosheets

Ultrahigh-Performance Supercritical Fluid Chromatography and Detection of Multiple Biogenic Amines in Gentamicin Sulfate: Method Development Using Computer-Assisted Modeling

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Octadecylamine and glucose-coderived hydrophobic carbon dots-modified porous silica for chromatographic separation

Cited by 68 publications

References 37 publications

Development of Highly Luminescent Water-Insoluble Carbon Dots by Using Calix[4]pyrrole as the Carbon Precursor and Their Potential Application in Organic Solar Cells

Development of Highly Luminescent Water-Insoluble Carbon Dots by Using Calix[4]pyrrole as the Carbon Precursor and Their Potential Application in Organic Solar Cells

Acetylcholinesterase Activity Monitoring and Natural Anti-neurological Disease Drug Screening via Rational Design of Deep Eutectic Solvents and CeO2-Co(OH)2 Nanosheets

Ultrahigh-Performance Supercritical Fluid Chromatography and Detection of Multiple Biogenic Amines in Gentamicin Sulfate: Method Development Using Computer-Assisted Modeling

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Acetylcholinesterase Activity Monitoring and Natural Anti-neurological Disease Drug Screening via Rational Design of Deep Eutectic Solvents and CeO₂-Co(OH)₂ Nanosheets