jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Joanna Żebrowska | Piotr Mucha | Maciej Prusinowski | Daria Krefft | Agnieszka Żylicz-Stachula | Milena Deptuła | Aneta Skoniecka | Agata Tymińska | Małgorzata Zawrzykraj | Jacek Zieliński | Michał Pikuła | Piotr M. Skowron
Source: Microbial Cell Factories (article, 2024-03-14)
Field: Materials Science — Biomaterials

Development of hybrid biomicroparticles: cellulose exposing functionalized fusion proteins Microcellulose display with recombinant proteins involves utilizing cellulose, a natural polymer found in plants, as a platform for presenting or displaying proteins. This approach harnesses the structural properties of cellulose to express or exhibit various recombinant proteins on its surface. It offers a novel method for protein expression, presentation, or immobilization, enabling various applications in biotechnology, biomedicine, and other fields. Microcellulose shows promise in biomedical fields for wound healing materials, drug delivery systems, tissue engineering scaffolds, and as a component in bio-sensors due to its biocompatibility and structural properties. Cellulase ; Cellulose ; Recombinant DNA ; Fusion protein ; Biochemistry ; Cell biology ; Biomolecule ; Chemistry ; Biology ; Nanotechnology ; Materials science ; Gene Advanced Cellulose Research Studies ; Biofuel production and bioconversion ; Polysaccharides and Plant Cell Walls
Authors: Rachel Anne E. Lagunay | Banu Akhetova | Robert J. O’Reilly | Mannix P. Balanay
Source: Crystals (article, 2024-04-06)
Field: Materials Science — Materials Chemistry

Tailoring the Optoelectronic Properties of Soybean-Derived Nitrogen Self-Doped Carbon Dots through Composite Formation with KCl and Zeolite, Synthesized Using Autogenic Atmosphere Pyrolysis This article investigates the environmentally friendly synthesis and characterization of carbon dots (CDs) derived from soybean biomass, in conjunction with their composites containing potassium chloride (KCl) or zeolite. By using an environmentally sustainable synthetic approach, this study sought to unlock the potential of these materials for various applications. The physicochemical properties of the CDs and composites were comprehensively analyzed using various techniques including scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction analysis. In addition, various optical properties such as UV–Vis absorption, band gap, and excitation–emission behavior were investigated. A key finding to arise from this study was that the inclusion of a doping agent such as KCl or zeolite significantly reduced the size of the resulting CDs. In this light, whereas the undoped species are associated with average sizes of 8.86 ± 0.10 nm, those doped with either zeolite or KCl were associated with average sizes of 3.09 ± 0.05 and 2.07 ± 0.05 nm, respectively. In addition, it was shown that doping with either zeolite or KCl resulted in an alteration of the elemental composition of the CDs and influenced their optical properties, especially their excitation-dependent emission. These promising results point to potential applications in environmental sensing and energy-related fields. Pyrolysis ; Zeolite ; Carbon fibers ; Materials science ; Composite number ; Atmosphere (unit) ; Nitrogen ; Doping ; Chemical engineering ; Nanotechnology ; Chemistry ; Composite material ; Catalysis ; Optoelectronics ; Organic chemistry Carbon and Quantum Dots Applications ; Nanocluster Synthesis and Applications ; Quantum Dots Synthesis And Properties
Authors: Joyce C. Oliveira | Breno U. Abreu | Esther R. S. Paz | Renata G. Almeida | João Honorato | Cauê P. Souza | Felipe Fantuzzi | Victor F. S. Ramos | Rubem F. S. Menna‐Barreto | Maria H. Araújo | Guilherme A. M. Jardim | Eufrânio N. da Silva Júnior
Source: Chemistry - An Asian Journal (article, 2024-08-13)
Field: Chemistry — Organic Chemistry

SuFEx‐Functionalized Quinones via Ruthenium‐Catalyzed C−H Alkenylation: A Potential Building Block for Bioactivity Valorization Herein, we describe the Ru-catalyzed C-H alkenylation of 1,4-naphthoquinones (1,4-NQs), resulting in 1,4-naphthoquinoidal/SuFEx hybrids with moderate to good yields. This method provides a novel route for direct access to ethenesulfonyl-fluorinated quinone structures. We conducted mechanistic studies to gain an in-depth understanding of the elementary steps of the reaction. Additionally, we evaluated the prototypes against trypomastigote forms of T. cruzi, leading to the identification of compounds with potent trypanocidal activity. Ruthenium ; Catalysis ; Combinatorial chemistry ; Chemistry ; Quinone ; Block (permutation group theory) ; Stereochemistry ; Organic chemistry ; Mathematics Catalytic C–H Functionalization Methods ; Bioactive Compounds and Antitumor Agents ; Synthesis and Catalytic Reactions
Authors: Yu Fu | Joëlle Fréchette
Source: Langmuir (article, 2024-11-08)
Field: Materials Science — Materials Chemistry

Distinct Contributions of Particle Adsorption and Interfacial Compression to the Surface Pressure of a Fluid Interface Particle-laden interfaces stabilize emulsions and foams and can serve as a platform for multiscale materials. Favorable wetting of a particle to a fluid interface reduces the apparent interfacial tension through area replacement with a linear relationship between the apparent surface pressure and the particle area fraction. The area replacement model is widely employed, often up to particle area fraction reaching the maximum hexagonal packing. However, data directly supporting the area replacement model are limited, and the description ignores contributions from particle-particle interactions and does not describe the surface pressure during the compression of a particle-laden interface. This work reports on the direct validation of the area replacement model through the direct measurement of the adsorption energy, surface pressure, and area fraction of adsorbed particles. Experiments combining tensiometry and confocal imaging during the adsorption of colloidal particles to the oil-water interface confirm the area replacement model within the observed range of area fraction, but only when the drop area is kept constant. Results highlight the importance of keeping the droplet area constant during particle adsorption to extract the adsorbed amount from tensiometry experiments. As particles adsorb to the interface, the droplet area tends to change and compresses or expands the interface. This change in area is associated with an increase in area fraction at nearly constant surface pressure, which deviates from the area replacement model. In contrast to particle adsorption, slow compression of the fluid interface leads to a negligible change in surface pressure up to an area fraction of η ∼ 0.26 for the materials systems investigated. Increase in surface pressure during compression is due to particle-particle interactions, while compression at higher strain rates introduces additional contributions from interfacial rheology. Adsorption ; Surface pressure ; Particle (ecology) ; Compression (physics) ; Surface tension ; Interface (matter) ; Materials science ; Surface (topology) ; Chemical engineering ; Chemistry ; Composite material ; Chemical physics ; Gibbs isotherm ; Thermodynamics ; Mechanics ; Physical chemistry ; Physics ; Geology Pickering emulsions and particle stabilization ; Enhanced Oil Recovery Techniques ; Proteins in Food Systems
Authors: Prescillia Lagarrigue | Jae‐Min Oh | Jing Xie | Christophe Tenailleau | Benjamin Duployer | Sophie Cazalbou | Dominique Poquillon | Christophe Drouet | Jérémy Soulié
Source: Next Materials (article, 2024-02-18)
Field: Materials Science — Materials Chemistry

Freeze-cast Mg-Fe-CO3 nano-layered double hydroxide/alginate composite scaffolds for bone substitution: porous architecture and mechanical properties Layered Double Hydroxides (LDH) are relevant inorganic materials for biomedical application thanks to both their tunable chemical composition and their lamellar structure allowing molecules or ions intercalation in the interlayer spaces. However, their brittleness and thermal sensibility limit the fabrication of 3D materials based on LDH, making it challenging, especially to prepare scaffolds for bone tissue engineering that require a macroporous structure for cell colonization and sufficient mechanical properties to be handled/cut by surgeons. To overcome these drawbacks, this study describes the preparation of 3D scaffolds based on the association of fully biocompatible LDH with an alginate matrix processed by freeze-casting, and leading to macroporous materials with a porosity compatible with cell colonization. To the best of our knowledge, the fabrication of such composite scaffolds by freeze-casting associated with a fine multiscale and systematic characterization was never described in the literature. Thus, this work first focused on the successful synthesis of Mg-Fe-CO3 layered double hydroxide nanoparticles, as confirmed by physicochemical characterizations (XRD, FTIR, SEM, DLS). Then, the resulting nano-LDH were associated with an alginate matrix to generate 3D composite scaffolds by freeze-casting. In order to evaluate the effect of nano-LDH content on the scaffold porous structure and mechanical properties, various compositions (nano-LDH/alginate ratio) were tested, and the structure and mechanical properties of the resulting scaffolds were characterized (SEM, X-Ray microtomography, compression tests). Results allowed us to identify an optimal nano-LDH/alginate composition (ratio 1:1) leading to 3D macroporous scaffolds combining suitable anisotropic microporosity for cell colonization and sufficient mechanical properties for non-bearing bone applications, while allowing for their manipulation without risks of collapse. Materials science ; Layered double hydroxides ; Porosity ; Chemical engineering ; Hydroxide ; Lamellar structure ; Composite number ; Casting ; Fabrication ; Nano- ; Nanoparticle ; Composite material ; Nanotechnology Layered Double Hydroxides Synthesis and Applications ; Bone Tissue Engineering Materials ; Magnesium Oxide Properties and Applications
Authors: Milad Safarpour | Arkadiusz Żych | Maedeh Najafi | Giacomo Tedeschi | Luca Ceseracciu | Lara Marini | Giovanni Perotto | Athanassia Athanassiou
Source: Journal of Applied Polymer Science (article, 2024-04-15)
Field: Materials Science — Polymers and Plastics

Biobased and biodegradable imine vitrimers from epoxidized soybean oil as packaging Abstract A flexible and stretchable vitrimer was synthesized using exclusively biobased building blocks and following green chemistry principles. Epoxidized soybean oil (ESO), vanillin, the biobased diamine, Priamine®, and oleic acid were used to create a material that can replace fossil‐derived, non‐biodegradable packaging. Vanillin and Priamine® were used to develop a crosslinker that could react with the epoxide groups of ESO without the need for solvents, with a catalyst‐free synthesis that does not generate any waste or byproducts. Oleic acid was incorporated, to tune the properties of the final material, since it can react with ESO and control the crosslink density. The vitrimers produced in this work showed excellent reprocessability and recyclability. They possess the ability to be molded, and they can also strongly adhere on surfaces. Moreover, they exhibited oxygen and water vapor barrier comparable to low density polyethylene, while showing very low migration into food simulant, which position them as a promising material for flexible food and general packaging market. The vitrimers showed also the capability of biodegradation in seawater, providing a safe end of life in case of mismanagement. Epoxidized soybean oil ; Vanillin ; Materials science ; Oleic acid ; Biodegradation ; Epoxide ; Food packaging ; Organic chemistry ; Polylactic acid ; Soybean oil ; Polyethylene ; Bioplastic ; Chemical engineering ; Catalysis ; Chemistry ; Polymer ; Composite material ; Raw material ; Waste management ; Food science Polymer composites and self-healing ; biodegradable polymer synthesis and properties ; Electrospun Nanofibers in Biomedical Applications
Authors: Ana M. Diniz | Carina I. C. Crucho | María J. Ruedas-Rama | Ángel Orte | Cristina J. Dias | Mani Outis | Sandra N. Pinto | M. Amparo F. Faustino | Mário N. Berberan‐Santos | João Avó
Source: Advanced Optical Materials (article, 2024-11-18)
Field: Materials Science — Materials Chemistry

TADF‐Emitting Nanoparticles for Application as Probes in Time‐Resolved Imaging and <sup>1</sup>O<sub>2</sub> Photosensitizers Abstract Organic Thermally Activated Delayed Fluorescence (TADF) molecules are luminescent compounds capable of harvesting energy from triplet states without using heavy metals. This process results in oxygen‐sensitive, long‐lived delayed emission, suitable for developing optical probes for time‐gated cell imaging, oxygen sensors, and singlet oxygen photosensitizers. Despite their potential, the use of TADF emitters in these applications is hindered by poor performance in polar media and the challenge of balancing high photoluminescence quantum yields, long emission lifetimes, and high triplet formation quantum yields. In this study, novel TADF emitters are developed based on 1,8‐naphthalimide (NI) dyes, and how encapsulation in polymeric nanoparticles can enhance their performance in aqueous media is demonstrated. The resulting nanomaterials exhibit high delayed‐to‐prompt emission ratios, long delayed fluorescence lifetimes, and exceptional applicability in time‐resolved imaging. The singlet oxygen photosensitization capabilities of the TADF nanomaterials in the photodegradation of phenol, exploring a Förster Resonance Energy Transfer (FRET) system that improved the efficiency, are also assessed. These findings highlight the promising potential of TADF nanomaterials for diverse applications, including photodegradation of pollutants, cellular imaging, and biosensing. Materials science ; Nanoparticle ; Nanotechnology ; Aggregation-induced emission ; Photochemistry ; Fluorescence ; Analytical Chemistry (journal) ; Optoelectronics ; Optics ; Organic chemistry ; Physics ; Chemistry Luminescence and Fluorescent Materials ; Organic Light-Emitting Diodes Research ; Lanthanide and Transition Metal Complexes
Authors: Noémie Beaucage | Zujhar Singh | Jérémie Bourdon | Shawn K. Collins
Source: Angewandte Chemie International Edition (article, 2024-09-18)
Field: Chemistry — Inorganic Chemistry

Tuning Co‐Operative Energy Transfer in Copper(I) Complexes Using Two‐Photon Absorbing Diimine‐Based Ligand Sensitizers Photocatalysis mediated by low energy light wavelengths has potential to enable safer, sustainable synthetic methods. A phenanthroline-derived ligand bathocupSani, with a large two-photon absorption (TPA) cross section was used to construct a heteroleptic complex [Cu(bathocupSani)(DPEPhos)]BF<sub>4</sub> and a homoleptic complex [Cu(bathocupSani)<sub>2</sub>]BF<sub>4</sub>. The ligand and the respective homoleptic complex with copper exhibit two-photon upconversion with an anti-Stokes shift of 1.2 eV using red light. The complex [Cu(bathocupSani)<sub>2</sub>]BF<sub>4</sub> promoted energy transfer photocatalysis enabling oxidative dimerization of benzylic amines, sulfide oxidation, phosphine oxidation, boronic acid oxidation and atom-transfer radical addition. Homoleptic ; Chemistry ; Photochemistry ; Diimine ; Ligand (biochemistry) ; Photocatalysis ; Copper ; Absorption (acoustics) ; Materials science ; Organic chemistry ; Catalysis ; Metal Metal-Catalyzed Oxygenation Mechanisms ; Oxidative Organic Chemistry Reactions ; Porphyrin and Phthalocyanine Chemistry
Authors: Tiange Gao | Xiaoyang Xiao | Zhenliang Dong | Xilong Lu | Liwen Mao | Jinzheng Wang | Yiming Liu | Qingmin Hu | Jiaqiang Xu
Source: Batteries (article, 2024-12-10)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Application of Defect Engineering via ALD in Supercapacitors Supercapacitors are a kind of energy storage device that lie between traditional capacitors and batteries, characterized by high power density, long cycle life, and rapid charging and discharging capabilities. The energy storage mechanism of supercapacitors mainly includes electrical double-layer capacitance and pseudocapacitance. In addition to constructing multi-level pore structures to increase the specific surface area of electrode materials, defect engineering is essential for enhancing electrochemical active sites and achieving additional extrinsic pseudocapacitance. Therefore, developing a simple and efficient method for defect engineering is essential. Atomic layer deposition (ALD) technology enables precise control over thin film thickness at the atomic level through layer-by-layer deposition. This capability allows the intentional introduction of defects, such as vacancies, heteroatom doping, or misalignment, at specific sites within the material. The ALD process can regulate the defects in materials without altering the overall structure, thereby optimizing both the electrochemical and physical properties of the materials. Its self-limiting surface reaction mechanism also ensures that defects and doping sites are introduced uniformly across the material surface. This uniform defect distribution is particularly profitable for high surface area electrodes in supercapacitor applications, as it promotes consistent performance across the entire electrode. This review systematically summarizes the latest advancements in defect engineering via ALD technology in supercapacitors, including the enhancement of conductivity and the increase of active sites in supercapacitor electrode materials through ALD, thereby improving specific capacitance and energy density of the supercapacitor device. Furthermore, we discuss the underlying mechanisms, advantages, and future directions for ALD in this field. Supercapacitor ; Pseudocapacitance ; Materials science ; Atomic layer deposition ; Capacitance ; Capacitor ; Nanotechnology ; Energy storage ; Electrode ; Layer (electronics) ; Electrical engineering ; Voltage ; Power (physics) ; Chemistry ; Engineering Supercapacitor Materials and Fabrication ; Electrocatalysts for Energy Conversion ; Advancements in Battery Materials
Authors: Adewale George Adeniyi | Sulyman A. Abdulkareem | Mubarak A. Amoloye | Ebuka Chizitere Emenike | Abdelrahman O. Ezzat | Kingsley O. Iwuozor | Hamad A. Al‐Lohedan | Favour Taiye Aransiola | Ifeoluwa Peter Oyekunle
Source: Asia-Pacific Journal of Chemical Engineering (article, 2024-02-06)
Field: Materials Science — Polymers and Plastics

Balancing strength and sustainability: Incorporating recycled tyres and pawpaw fibre in polystyrene composites Abstract The study presents the development and characterization of rubberized fibrillated polystyrene composites using recycled rubber tires and pawpaw fibres. The composites were prepared by varying the proportions of rubber and fibre. FTIR, SEM, EDX and hardness testing were used to characterize the composites. FTIR spectroscopy revealed distinct peaks, including hydroxyl and amine, but with a notable absence of the O‐H group in nearly all composites, affirming their durability and potential suitability for applications in moist environments. SEM results showed that the introduction of rubber tires did not significantly alter the smooth and fine‐grained nature of the polystyrene resin, whereas the inclusion of pawpaw fibre resulted in an irregular and coarse surface. Mechanical testing demonstrated that the hardness of the composites was dependent on the composition, with rubber‐rich composites being more flexible and pawpaw‐fibre‐rich composites exhibiting greater rigidity. Composite material ; Materials science ; Natural rubber ; Polystyrene ; Fourier transform infrared spectroscopy ; Durability ; Polymer ; Chemical engineering Natural Fiber Reinforced Composites ; Polymer Nanocomposites and Properties ; Polymer crystallization and properties
Authors: Zirui Gao | Dandan Wan | Min Luo | Xiawei Wei
Source: Journal of Molecular Cell Biology (review, 2024-12-01)
Field: Materials Science — Biomaterials

Application of nanomedicines in tumor immunotherapy Tumor immunotherapy has emerged as a formidable strategy, demonstrating substantial achievements in the field of cancer treatment. Despite its remarkable success, intrinsic limitations such as insufficient targeting capabilities, side effects, and resistance to immunotherapy hinder its efficacy. To address these challenges, the utilization of nanomedicines in tumor immunotherapy has been broadly explored, capitalizing on their advantages of targeting delivery capability, loading capacity, modifiability, and biocompatibility. Through rational design approaches, nanomedicines are engineered to meet diverse delivery requirements and synergize with different regimens to maximize therapeutic efficacy while alleviating side effects. This review initially discusses the challenges associated with tumor immunotherapy and underscores the pivotal role played by nanomedicines in overcoming these obstacles. Subsequently, representative types of nanoparticles are systematically introduced based on their structural properties, advantages, potential limitations, and future research directions. Special emphasis is placed on recent advancements in a range of nanomedicines designed for specific tumor immunotherapy strategies. Finally, the clinical applications as well as prospects of nanomedicines are discussed. Immunotherapy ; Nanomedicine ; Cancer immunotherapy ; Rational design ; Cancer ; Medicine ; Nanotechnology ; Materials science ; Nanoparticle Nanoparticle-Based Drug Delivery ; Nanoplatforms for cancer theranostics ; Immunotherapy and Immune Responses
Authors: Artur Luís Hennemann | Helton Pereira Nogueira | Miguel D. Ramos | Thiago C. Correra | Bruno L. Hennemann | Koiti Araki
Source: ACS Omega (article, 2024-11-18)
Field: Chemistry — Analytical Chemistry

Amorphous Titanium Dioxide Nanoparticles and Their Unexpected Fragmentation in MALDI-TOF/MS Amorphous 3 nm large ultrasmall (<i>us</i>TiO<sub>2</sub>) and 7 nm large anatase (<i>n</i>TiO<sub>2</sub>) nanoparticles (NPs) were successfully prepared and characterized by TEM, FTIR, DRX, UV-vis, and DLS techniques. The MALDI-TOF/MS was shown to be effective in assessing the surface chemistry but fragmentation processes precluded its use for evaluation of particle size distribution. In fact, the laser causes the fragmentation not only of amorphous TiO<sub>2</sub> NPs but also of the material subjected to heat treatment and crystallization at 450 °C for 4 h upon interaction with the DHB matrix and TFA ionizing agent. No significant difference could be observed in the spectrum by varying the particle size, indicating the high stability of the TiO<sub>2</sub> dimer and its low aggregates in the gaseous phase. In short, MALDI-TOF/MS is effective for the direct analysis of nanoparticle surfaces, especially the interaction of functionalizing molecular species with the inorganic components, which in combination with the other techniques demonstrated to be ideal for the detailed characterization of nanomaterials. Amorphous solid ; Anatase ; Crystallization ; Nanoparticle ; Fragmentation (computing) ; Materials science ; Titanium dioxide ; Nanomaterials ; Chemical engineering ; Particle size ; Nanotechnology ; Chemistry ; Organic chemistry ; Composite material ; Photocatalysis Analytical chemistry methods development ; Ion-surface interactions and analysis ; Luminescence Properties of Advanced Materials