jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Edgar Alejandro Ruiz-Ramirez | Daniel Leobardo Ochoa-Martínez | Gilberto Velázquez‐Juárez | Reyna Isabel Rojas-Martínez | Víctor Manuel Zúñiga-Mayo
Source: Horticulturae (article, 2025-08-04)
Field: Materials Science — Materials Chemistry

Effect of Nanoparticles on the Development of Bacterial Speck in Tomato (Solanum lycopersicum L.) and Chili Variegation (Capsicum annuum L.) Among the new strategies for managing diseases in agricultural crops is the application of metallic nanoparticles due to their ability to inhibit the development of phytopathogenic microorganisms and to induce plant defense responses. Therefore, this research evaluated the effects of silver (AgNPs), zinc oxide (ZnONPs), and silicon dioxide (SiO2NPs) nanoparticles on symptom progression and physiological parameters in two pathosystems: Pseudomonas syringae pv. tomato (Psto) in tomato (pathosystem one, culturable pathogen) and Candidatus Liberibacter solanacearum (CaLso) in pepper plants (pathosystem two, non-culturable pathogen). For in vitro pathosystem one assays, SiO2NPs did not inhibit Psto growth. The minimum inhibitory concentration (MIC) was 31.67 ppm for AgNPs and 194.3 ppm for ZnONPs. Furthermore, the minimum lethal concentration (MLC) for AgNPs was 100 ppm, while for ZnONPs, it was 1000 ppm. For in planta assays, ZnONPs, AgNPs, and SiO2NPs reduced the number of lesions per leaf, but only ZnONPs significantly decreased the severity. Regarding pathosystem two, AgNPs, ZnONPs, and SiO2NPs application delayed symptom progression. However, only AgNPs significantly reduced severity percentage. Moreover, treatments with AgNPs and SiO2NPs increased the plant height and dry weight compared to the results for the control. Capsicum annuum ; Solanum ; Horticulture ; Biology ; Solanaceae ; Botany ; Pepper Nanoparticles: synthesis and applications ; Nanocomposite Films for Food Packaging
Authors: Maksym Soboleskyi | Illia Holubiev | Andrii Lopatynskyi | A.V. Samoylov | Glib Dorozinsky | Oleksandr Liapin | R. V. Khrystosenko | Volodymyr Chegel | S. V. Dzyadevych | О. О. Солдаткін
Source: Innovative Biosystems and Bioengineering (article, 2025-03-16)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Optimization of Parameters of Saline Sodium Citrate Buffer for Stability of Colloidal Gold Nanoparticles Used in DNA Hybridization Biosensor Background. The use of optical biosensors based on surface plasmon resonance (SPR) spectrometry have long been established as a viable alternative to the traditional molecular biological methods, such as immunostaining or ELISA. Its capacity to perform real-time quantitative measurements is complemented with the possibility for the enhancement of the sensor signal with the use of optically active colloidal nanoparticles. On the other hand, few such nanoparticle-containing DNA biosensors have been developed, owing to poor colloidal stability of nanoparticles in chemical conditions suitable for hybridization of nucleic acid sequences. Objective. This study investigates the possibility of using gold nanoparticles (AuNPs) modified with thiolated oligonucleotides, 6-mercapto-1-hexanol, and lipoic acid as part of a hybridization system for biosensor detection of DNA sequences in order to improve its main analytical characteristics. Methods. A study of the colloidal stability of nanoparticles in SSC (saline sodium citrate) media of different multiplicity before and after modification was carried out in order to select the best environment for the operation of the biosensor system. Aggregation of modified AuNPs was facilitated by their centrifugation, after which pelleted nanoparticles were resuspended and investigated by spectrophotometry. The conclusions regarding the colloidal stability of AuNPs were based on the drop in concentration of colloidal AuNPs after each centrifugation. Results. The possibility of using the studied NPs in biosensor analysis was shown, and 0.1×SSC buffer solution was determined to be the optimal medium for their operational stability. Approbation of the nanoparticle-containing DNA hybridization biosensor based on SPR spectrometry was carried out in 2.0×SSC medium. Conclusions. The prospective use of the studied NPs as components of DNA hybridization systems for the detection of genetic markers has been proven. Sodium citrate ; Colloidal gold ; Biosensor ; DNA ; Nanoparticle ; Buffer solution ; Chemistry ; Buffer (optical fiber) ; Sodium ; Colloid ; Materials science ; Nanotechnology ; Chromatography ; Chemical engineering ; Biochemistry ; Computer science ; Medicine ; Organic chemistry ; Engineering Gold and Silver Nanoparticles Synthesis and Applications ; Advanced biosensing and bioanalysis techniques ; Nanocluster Synthesis and Applications
Authors: Grant J. Strachan | Magdalena Majewska | Ewan Cruickshank | Damian Pociecha | Ewa Górecka | John M. D. Storey | Corrie T. Imrie
Source: Journal of Materials Chemistry C (article, 2025-01-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Liquid crystal trimers containing tertiary benzanilide groups The highly bent shape of tertiary amides offers a new design element for liquid crystals with unconventional shapes. Here we report an unusual family of liquid crystal trimers, with a marked contraction of the smectic layer spacing on cooling. Materials science ; Crystallography ; Crystal structure ; Group (periodic table) ; Organic chemistry ; Chemistry Liquid Crystal Research Advancements ; Synthesis and Properties of Aromatic Compounds ; Molecular spectroscopy and chirality
Authors: Андрій Володимирович Бондаренко | Yevhenii Kozyriev | Illia O. Doroshenko | Dmytro Lesyk | Petro Borysko | Bohdan V. Vashchenko | Oleksandr O. Grygorenko
Source: ChemRxiv (article, 2025-09-09)
Field: Chemistry — Organic Chemistry

Bicyclic 1,4-Dioxepanes – Novel Advanced Building Blocks for Drug Discovery A series of fused and spirocyclic 1,4-dioxepanes bearing a saturated heterocyclic amine ring were synthesized. The key step of the synthesis included double alkylation of an appropriate saturated N-heterocyclic 1,2-diol with alpha,alpha'-dichloroisobutylene. Further chemical modification of the terminal exocyclic double bond in the resulting bicyclic intermediates provided access to a series of valuable building blocks bearing common functional groups (amine, carboxylic acid, alcohol, etc.) The developed protocols demonstrated high efficiency, versatility, and applicability, offering a synthetic platform for accessing novel 1,4-dioxepane-containing frameworks with potential utility in chemical and pharmaceutical research. Additional evidence for that was obtained by physicochemical profiling of the synthesized bicyclic compounds (i.e., pKa and LogP measurements), which evaluated their potential for isosteric replacements. Bicyclic molecule ; Drug discovery ; Double bond ; Amine gas treating ; Chemical synthesis ; Ring (chemistry) Chemical Reaction Mechanisms ; Organic Chemistry Cycloaddition Reactions ; Cyclopropane Reaction Mechanisms
Authors: Anastasia Leshchik | Andrew Jo | Timothy P. Bender
Source: New Journal of Chemistry (article, 2025-12-11)
Field: Materials Science — Materials Chemistry

Ammonia-free and one-pot synthesis of di-chloro silicon phthalocyanine and naphthalocyanine Silicon phthalocyanines (SiPcs) and silicon naphthalocyanines (SiNcs) are promising and versatile organic materials with applications spanning across organic electronics, photocatalysis, and photodynamic therapy. Phthalocyanine ; Silicon ; Copper phthalocyanine ; Photodynamic therapy ; Organic semiconductor Porphyrin and Phthalocyanine Chemistry ; TiO2 Photocatalysis and Solar Cells ; Mesoporous Materials and Catalysis
Authors: Azlan Abdul Aziz | Babay Asih Suliasih
Source: Chemistry and Materials (article, 2025-02-28)
Field: Materials Science — Materials Chemistry

Morphology-Dependent Antioxidant Activity of Gold Nanoparticles Prepared Using Different Electrolyte Concentrations Antioxidants play a crucial role in protecting the body from oxidative stress by neutralizing free radicals. The synthesis of antioxidant-active materials, such as gold nanoparticles (AuNPs), offers significant advantages due to their unique physicochemical properties. In this study, AuNPs were successfully synthesized using the electrodeposition method on indium-tin oxide substrates, with varying Na₂SO₄ electrolyte concentrations. Scanning electron microscopy analysis confirmed that the synthesized AuNPs exhibited a round to slightly irregular morphology, with an average particle size ranging from 48 to 65 nm. X-ray diffractometer characterization revealed that the nanoparticles possessed a face-centered cubic crystal structure, confirming their high purity. Antioxidant activity was evaluated using the DPPH assay, where AuNPs synthesized with 0.5 M Na₂SO₄ exhibited the highest DPPH inhibition of 72.39%. This enhanced antioxidant performance is attributed to the smaller particle size, which increases the available surface area for free radical neutralization. These findings highlight the potential of electrodeposited AuNPs as effective antioxidants and provide valuable insights into optimizing nanoparticle synthesis for biomedical and nanotechnological applications. Electrolyte ; Morphology (biology) ; Antioxidant ; Nanoparticle ; Colloidal gold ; Chemical engineering ; Chemistry ; Materials science ; Nanotechnology ; Biochemistry ; Biology ; Electrode ; Physical chemistry Advanced Nanomaterials in Catalysis ; Gold and Silver Nanoparticles Synthesis and Applications
Authors: Shin‐nosuke Nishimura | Mitsunobu Kamiya | Nobuyuki Higashi | Tomoyuki Koga
Source: Macromolecular Chemistry and Physics (article, 2025-01-27)
Field: Chemistry — Organic Chemistry

Thermoresponsive Behaviors of Core‐Crosslinked Star Polymers Composed of Amino Acid‐Derived Vinyl Polymers in an Aqueous Solution Abstract Amino acid‐derived vinyl polymers are of great interest as bio‐based thermoresponsive soft materials with diverse applications in the industrial, biomedical, and cosmetic fields. In this study, 14 distinct core‐crosslinked stars (CCS) polymers are synthesized by reversible addition–fragmentation chain transfer polymerization of N ‐acryloyl amino acid (X)‐methyl esters (X = alanine, β‐alanine, or glycine), followed by a core–gel approach. These CCS polymers have the following systematic variations in their molecular architecture: i) three types of amino acid‐based polymer arms with the same chain lengths but different arm numbers, ii) different combinations of amino acid species in the arm and core segments, and iii) heteroarm composition (i.e., miktoarm type). All CCS polymers are water‐soluble and exhibited lower critical solution temperature (LCST) behaviors. The thermal responses are strongly dependent on structural factors, such as arm species (hydrophobicity), arm number, and polymer shape. The transition temperatures of the CCS polymers are lower than those of the corresponding linear polymers with almost the same molecular weight, particularly when the arm polymers has relatively high hydrophilicity. Furthermore, tunable LCST behaviors (20–55 °C) are achieved for miktoarm‐type CCS polymers by adjusting heteroarm composition. These findings provide useful insights into the thermoresponsive behaviors of bio‐based CCS polymers. Aqueous solution ; Polymer chemistry ; Polymer ; Star polymer ; Vinyl polymer ; Core (optical fiber) ; Star (game theory) ; Materials science ; Polymer science ; Chemistry ; Chemical engineering ; Organic chemistry ; Polymerization ; Composite material Advanced Polymer Synthesis and Characterization ; Hydrogels: synthesis, properties, applications ; Supramolecular Self-Assembly in Materials
Authors: Ana Stojković | Ivan Krstić | Dragan Đorđević | Nenad S. Кrstić | Ana B. Miltojević | Milan Protić | Amelija Đorđević
Source: Polish Journal of Environmental Studies (article, 2025-12-03)
Field: Chemistry — Inorganic Chemistry

Valorization of Industrial By-Productsand Natural Zeolite for Sintered Materials:Comparative Chemical, Structural,and Thermal Characterization Valorization of industrial by-products through thermal processes represents an efficient and sustainable solution for waste reduction and the development of new functional materials.This study investigates the potential application of cathode ray tube (CRT) glass, iron slag, fly ash from thermal power plants, and natural zeolite in sintering processes.Characterization was performed using XRF, FTIR, SEM, and TGA methods to examine the chemical, morphological, and thermal properties of the materials.The obtained results indicate complementary chemical and structural characteristics, with SiO 2 and CaO as the dominant components in the analyzed materials.TGA analysis of the mixture, conducted under a controlled temperature regime, simulated the sintering process and demonstrated the thermal compatibility of the materials.In addition to spectroscopy/microscopy, composition-based proxies (basicity, silica modulus, network former/modifier ratio, and rule-of-mixtures density), together with a stable sintering region quantified by TGA (~750-990C), were used to appraise sinterability and application-oriented feasibility.The results show that this multicomponent composition enables the optimization of sintered products while preserving structural stability and ensuring negligible mass loss during thermal treatment.The materials analyzed, both individually and in synergy, represent sustainable components for the development of new sintered systems, thereby contributing to advanced recycling technologies and the principles of the circular economy. Characterization (materials science) ; Zeolite ; Thermal ; Natural (archaeology) Zeolite Catalysis and Synthesis ; Thermal and Kinetic Analysis ; Mesoporous Materials and Catalysis
Authors: Mir Mehdi Hashemi | Farzane Hahseminia | Sadegh Sadeghzadeh
Source: Scientific Reports (article, 2025-08-26)
Field: Materials Science — Surfaces, Coatings and Films

Alkyd coated laser induced graphene patches for corrosion resistance of metal substrates Corrosion can severely degrade surfaces and materials, impacting both functionality and safety. Laser-induced graphene (LIG) offers substantial corrosion resistance, making it an ideal material for protecting metals, such as carbon steel. This study developed adhesive, corrosion-resistant LIG patches on polyimide (PI) layers, enhanced with an alkyd resin coating, and applied to pretreated aluminum surfaces. LIG was synthesized using laser powers of 6, 8, 10, and 12 W, followed by alkyd coating for improved performance. Results of EDS, SEM, TGA, XRD, Raman spectroscopy, and surface-wetting properties are studied. SEM and XRD analyses revealed that a lower laser power (6 W) produced uniform, crystalline LIG, whereas a higher power (12 W) caused defects and porosity. Corrosion tests in an alkaline environment showed that the A-LIG6@PI patch had the best structural integrity, with minimal pitting after 96 h, outperforming other samples. The electrochemical analysis demonstrated a corrosion inhibition efficiency of 98.36% for A-LIG6@PI, with a corrosion current density of 0.11 µA/cm² and polarization resistance (Rp) of 8.51 × 10⁶ Ω·cm². Contact angle measurements confirmed enhanced hydrophobicity, with A-LIG6@PI showing an 88° angle compared to 58° for bare LIG. The electrochemical analysis demonstrated a corrosion inhibition efficiency of 98.36% for A-LIG6@PI in 3.5 wt% NaCl solution, outperforming higher-power LIG samples (e.g., 66.81% for uncoated LIG12@PI), while maintaining structural integrity on aluminum substrates after 96 h. These results highlight the potential of using lower laser power to create durable, corrosion-resistant graphene-based coatings suitable for flexible electronics, automotive components, marine structures, oil and gas pipelines, and protective applications. Alkyd ; Graphene ; Corrosion ; Materials science ; Metal ; Resistance (ecology) ; Laser ; Nanotechnology ; Optoelectronics ; Metallurgy ; Optics ; Biology ; Coating ; Ecology ; Physics Surface Modification and Superhydrophobicity ; Graphene research and applications ; Corrosion Behavior and Inhibition
Authors: Calford Odhiambo Otieno | Elijah Ayieta | Mochama Victor Samuel
Source: Open Journal of Microphysics (article, 2025-01-01)
Field: Materials Science — Electronic, Optical and Magnetic Materials

First Principle Study of Spin-Resolved Density of States, Magnetism and Mechanical Properties of the Iron Pnictide Compound CaFe&lt;sub&gt;2&lt;/sub&gt;As&lt;sub&gt;2&lt;/sub&gt; We present an ab-initio study of the mechanical properties and spin-dependent Density of States (DOS) of the iron pnictide compound CaFe2As2 at ground state. Ground state energy calculations were performed using Density Functional Theory (DFT) with Projector Augmented Wave (PAW) pseudo potentials and a Plane Wave (PW) basis set. The Generalized Gradient Approximation (GGA) was employed for exchange-correlation effects. The QUANTUM ESPRESSO (QE) code was instrumental in this study, while THERMO_PW was utilized to assess mechanical properties. Our results indicate that the compound is mechanically stable. Poisson’s ratio suggests that the material is brittle and anisotropic. Electronic structure calculations reveal that CaFe2As2 exhibits metallic behavior. Pnictogen ; Magnetism ; Condensed matter physics ; Materials science ; Spin (aerodynamics) ; Physics ; Superconductivity ; Thermodynamics Iron-based superconductors research ; Rare-earth and actinide compounds ; Physics of Superconductivity and Magnetism
Authors: Sahil | Anis Ahmad Chaudhary | Sonia Sorout | Kushi Yadav | Mohamed A. M. Ali | Fehmi Boufahja | Vikram Kumar | Devendra Kumar Jain | Kumar Sambhav Verma
Source: Frontiers in Plant Science (article, 2025-09-11)
Field: Materials Science — Materials Chemistry

Auxin mediated synthesis of gold nanoparticles: a novel approach to enhance shoot and root growth in pearl millet Pearl millet development was markedly enhanced by IAA- and IBA-stabilized AuNPs, indicating their potential as safe and efficient growth enhancers in situations impacted by stress. Pearl ; Auxin ; Shoot ; Plant growth ; Enhancer Nanoparticles: synthesis and applications ; Plant tissue culture and regeneration ; Leaf Properties and Growth Measurement
Authors: Debasis Ghosh | Anthony Robert Perez Perez | S M Mobin Sikder | Jesus Ivan Ivan Rodriguez Vasquez | Claire Zhang | Anjan Maity | Tao Ye | Andrea D. Merg
Source: RSC Chemical Biology (article, 2025-01-01)
Field: Materials Science — Biomaterials

Influence of Linker Design on the Stability, Folding, and Assembly of Tethered Collagen-Mimetic Peptides Covalently tethered collagen-mimetic peptides (CMPs) serve as synthetically programmable molecules for studying the collagen triple helix fold. Tethered CMPs, which overcome limitations that are inherent to their non-tethered counterparts (e.g.,... Linker ; Helix (gastropod) ; Triple helix ; Peptide ; Molecule ; Peptide sequence Collagen: Extraction and Characterization ; Nasal Surgery and Airway Studies ; Seaweed-derived Bioactive Compounds
Authors: Ángel D. Álvarez‐Castillo | Alexis Juárez‐Morales | Dazaet Galicia‐Badillo | Mauricio Maldonado‐Domínguez | Ernesto Enríquez‐Palacios | José M. Heredia‐Peñaloza | Marcos Flores‐Álamo | José L. Belmonte‐Vázquez
Source: ChemPhotoChem (article, 2025-11-03)
Field: Chemistry — Physical and Theoretical Chemistry

Rational Modulation of Excited‐State Intramolecular Proton Transfer, Aggregation‐Induced Emission, and Intramolecular Motion on Polysubstituted Imidazoles In this study, it is investigated how the N ‐substitution pattern modulates the excited‐state intramolecular proton transfer (ESIPT) in polysubstituted imidazoles, a class of compounds with promising photophysical properties. The selective use of a single isomer, either enol or keto, has emerged as a valuable strategy in developing new functional molecules. Using a combination of experimental and theoretical methods, it is addressed how N ‐alkyl substituents in combination with a 2‐(methoxy)phenyl group significantly influence the conformation and stabilization of enol and keto tautomers involved in the ESIPT process. Single‐crystal X‐ray diffraction reveals a clear influence on the dihedral angle involved in the ESIPT pathway in the crystalline solid state, while (time‐dependent) density functional theory reveals the importance of conformational flexibility and substituent π ‐donation in shaping the excited‐state potential energy surface to access a regime of tunable ESIPT. Supported by steady‐state solvent‐polarity‐dependent emission, aggregation‐induced emission, and viscosity‐dependent emission, an enhanced emission correlated with the stabilization of a specific isomer is demonstrated. Intramolecular force ; Dihedral angle ; Tautomer ; Enol ; Density functional theory ; Substituent ; Proton Photochemistry and Electron Transfer Studies ; Luminescence and Fluorescent Materials ; Synthesis and Properties of Aromatic Compounds
Authors: Mélanie Côté‐Cyr | Steve Bourgault
Source: Frontiers in Bioengineering and Biotechnology (review, 2025-08-11)
Field: Materials Science — Biomaterials

Design and applications of self-assembled polypeptide matrices in wound healing With an estimated prevalence of over two cases per 1,000 patients, chronic wounds represent a massive burden on healthcare systems around the globe. Such wounds often lead to major complications, including amputations, that greatly affect the living conditions of patients. Typical therapeutic approaches include skin grafts and topical application of therapeutic molecules such as growth factors. Current limitations of grafts include the availability of healthy tissues and risks of rejection, while the efficiency of therapeutic molecules is limited by their short half-life in the wound environment. Interestingly, porous matrices such as hydrogels have emerged as promising materials by acting simultaneously as a scaffold for skin cell proliferation and as a delivery system for therapeutic molecules, protecting them from degradation and/or elimination. Self-assembling polypeptides have revealed interesting properties for the fabrication of such materials, notably their ability to mimic the extracellular matrix of the skin, tunable mechanical properties and ease of conjugation to bioactive sequences. In this context, the present review aims at highlighting the diversity of self-assembled protein and peptide-based matrices, natural and synthetic, that have been evaluated as wound healing scaffolds. After briefly describing the most common bioactive protein sequences used within these matrices, examples of nature-inspired and synthetic self-assembled proteinaceous matrices studied for wound healing will be presented. Finally, strategies for modulating the mechanical properties of the hydrogels are discussed. Despite the number of studies published on the subject, the expanding number of self-assembling protein sequences and the constantly improving strategies for modulating the mechanical properties of resulting matrices should further drive the development of improved protein-based hydrogels for wound healing. Self-healing hydrogels ; Extracellular matrix ; Wound healing ; Context (archaeology) ; Scaffold ; Self-healing ; Materials science ; Surface modification ; Nanotechnology ; Biomedical engineering ; Medicine ; Chemistry ; Biology ; Biochemistry ; Surgery ; Pathology Silk-based biomaterials and applications ; Electrospun Nanofibers in Biomedical Applications ; Polymer Surface Interaction Studies