Carboxymethyl hemicellulose hydrogel as a fluorescent biosensor for bacterial and fungal detection with DFT and molecular docking studies

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 4, 2025

Abstract A new method was developed to quickly produce carboxymethyl hemicellulose (CM-Hemi) and fluorescent nitrogen-doped carbon dots (N–CDs) from sugarcane bagasse (SB). These materials were then combined with calcium chloride (CaCl₂) create hydrogel sensors antibacterial antifungal properties. The CM-Hemi@Ca-N–CDs effective against both Gram-negative ( Escherichia coli ) Gram-positive Staphylococcus aureus bacteria compared CM-Hemi@Ca which give no activity. Both hydrogels also exhibited properties Candida albicans . Molecular docking studies revealed that the had strong binding interactions protein (1.92 A°) compard (2.01 A°), aligned inhibition zone measurements test. fluorescence microscope differences in emitted light color when interacted different types of microorganisms, likely due variations their cell walls. Density functional theory (DFT) calculations indicate incorporation N–CDs into enhances its stability rigidity. This is evidenced by lower energy gap (E g ), higher electron affinity (μ), softness (S) hydrogel. Additionally, formation amide bonds between CM-Hemi contributes increased rigidity hydrogel.These findings supporting th effectiveness as an antibacterial/antifungal sensor.

Язык: Английский

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Development and characterization of fluorescent cellulose succinate hydrogels for efficient chromium adsorption

Journal of Polymer Research, Год журнала: 2024, Номер 31(11)

Опубликована: Ноя. 1, 2024

Язык: Английский

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Speedy synthesis of magnetite/carbon dots for efficient chromium removal and reduction: a combined experimental and DFT approach

Emergent Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 28, 2024

Abstract Magnetic carbon dots (Fe 3 O 4 /N–CQDs) was prepared by and eco-friendly one-step microwave method using sugarcane bagasse (SB) as a starting material, applied to remove ad reduce Cr(VI) in wastewater. The magnetization process performed novel instead of the long time conventional co-precipitation method. Fe /N–CQDs showed high saturated (Ms ~ 38.047 emu/g). When neat N–CQDs were adsorb Cr(VI), R% slightly higher case (93.86%) compared (91.73%). Moreover, reduction rate than N–CQDs. study confirmed presence magnetic iron oxide (Fe-O) at 655 cm −1 FTIR spectroscopy. Interestingly, XRD analysis revealed peaks indicative elemental (Fe(0)) alongside oxide. Furthermore, TGA/DTG significantly weight residue (∑RW) for alone, suggesting enhanced thermal stability due component. This is further supported activation energy (∑A) pre-exponential factor (∑s) obtained fluorescence N–CQDs, which make them suitable chemosensor future work. In addition, DFT calculations Graphical

Язык: Английский

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Novel, Speedy, and Eco-Friendly Carboxymethyl Cellulose-Nitrogen Doped Carbon Dots Biosensors with DFT Calculations, Molecular Docking, and Experimental Validation

Gels, Год журнала: 2024, Номер 10(11), С. 686 - 686

Опубликована: Окт. 24, 2024

Carboxymethyl cellulose (CMC) was prepared from sugarcane bagasse (SB) in minutes using a novel microwave method. Additionally, nitrogen-doped carbon dots (N-CDs) were synthesized SB the same technique. These materials crosslinked with CaCl

Язык: Английский

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Antimicrobial Plectranthus amboinicus emulsions prepared with amphiphilic cellulose stearate

Euro-Mediterranean Journal for Environmental Integration, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 5, 2024

Язык: Английский

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Cellulosic schiff base hydrogel biosensor for bacterial detection with pH/thermo-responsitivity: DFT calculations and molecular docking

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 283, С. 137389 - 137389

Опубликована: Ноя. 12, 2024

Язык: Английский

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Exploring the structural and electronic properties of fullerenes for advanced photodetectors, diodes, and solar cell applications

Journal of Industrial and Engineering Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Boosting Dielectric Properties of Polyethersulfone Membranes: A Strategy Using Cross-Linked Graphene Oxide/EDTA/Silane

ECS Journal of Solid State Science and Technology, Год журнала: 2025, Номер 14(3), С. 031007 - 031007

Опубликована: Март 1, 2025

We investigated development and characterization of composite membranes based on grafted graphene oxide (GO) with ethylenediamine tetraacetic acid (EDTA)/silane loaded onto polyethersulfone (PES) for dielectric applications. Fourier transform infrared analysis confirmed the presence oxygen-containing groups GO introduction new peaks corresponding to EDTA/silane in membrane. X-ray diffraction revealed a shift peaks, indicating successful modification. Raman spectroscopy showed an increase defect ratio (ID/IG) after modification, suggesting interaction between GO. Transmission electron microscopy is expected show morphological changes upon incorporation EDTA/silane. Scanning PES change surface morphology from smooth small pores non-smooth addition GO/EDTA/silane. UV–vis indicated red absorption peak GO/EDTA/silane compared GO, decrease oxygenated groups. Dielectric properties measurements demonstrated enhanced permittivity improved polarization response containing pristine The constant at 1 kHz 2.42 increased gradually 4.82 15% GO/EDTA/Silane-doped composition. This improvement attributed conductive network, high area, functional within

Язык: Английский

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Novel intelligent naked-eye food packaging pH-sensitive and fluorescent sulfur, nitrogen-carbon dots biosensors for tomato spoilage detection including DFT and molecular docking characterization

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 143330 - 143330

Опубликована: Апрель 1, 2025

Язык: Английский

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Fullerene-Functionalized Cellulosic Hydrogel Biosensor with Bacterial Turn-on Fluorescence Response Derived from Carboxymethyl Cellulose for Intelligent Food Packaging with DFT Calculations and Molecular Docking

Gels, Год журнала: 2025, Номер 11(5), С. 329 - 329

Опубликована: Апрель 28, 2025

This study reports the synthesis and characterization of a novel carboxymethyl cellulose–N-fullerene–g-poly(co-acrylamido-2-methyl-1-propane sulfonic acid) (CMC–N-fullerene–AMPS) hydrogel for potential application in biosensing within food packaging. The was synthesized via free radical polymerization characterized using FTIR, SEM, fluorescence microscopy. FTIR analysis confirmed successful grafting AMPS incorporation N-fullerenes, indicated by characteristic peaks shift N–H/O–H stretching frequency. Density Functional Theory (DFT) calculations revealed that CMC–N-fullerene–AMPS exhibited higher stability lower band gap energy (0.0871 eV) compared to CMC–AMPS hydrogel, which means high reactivity CMC–N-fullerene–AMPS. N-fullerenes significantly enhanced hydrogel’s antibacterial activity, demonstrating 22 mm inhibition zone against E. coli 24 S. aureus, suggesting active packaging applications. Critically, displayed unique “turn-on” response presence bacteria, with distinct color changes observed upon interaction (orange-red) aureus (bright green). enhancement, coupled porous morphology SEM (pore size 377–931 µm), suggests this as sensing platform bacterial contamination These combined properties activity distinct, bacteria-induced signal make promising candidate developing intelligent materials capable detecting spoilage.

Язык: Английский

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