jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Ayesha Kausar | Ishaq Ahmad
Source: Journal of Composites Science (article, 2023-06-10)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Conducting Polymer Nanocomposites for Electromagnetic Interference Shielding—Radical Developments Electromagnetic interference disturbs the working of electronic devices and affects the surroundings and human health. Consequently, research has led to the development of radiation-protection materials. Inherently conducting polymers have been found to be suitable for electromagnetic interference (EMI) shielding owing to their fine electrical conductivity properties. Moreover, nanoparticle-reinforced conjugated polymers have been used to form efficient nanocomposites for EMI shielding. Nanoparticle addition has further enhanced the radiation protection capability of conducting polymers. This state-of-the-art comprehensive review describes the potential of conducting polymer nanocomposites for EMI shielding. Conducting polymers, such as polyaniline, polypyrrole, and polythiophene, have been widely used to form nanocomposites with carbon, metal, and inorganic nanoparticles. The EMI shielding effectiveness of conducting polymers and nanocomposites has been the focus of researchers. Moreover, the microscopic, mechanical, thermal, magnetic, electrical, dielectric, and permittivity properties of nanocomposites have been explored. Electrically conducting materials achieve high EMI shielding by absorbing and/or dissipating the electromagnetic field. The future of these nanomaterials relies on nanomaterial design, facile processing, and overcoming dispersion and processing challenges in this field. Materials science ; Electromagnetic shielding ; Polyaniline ; Electromagnetic interference ; Conductive polymer ; Nanocomposite ; EMI ; Polymer ; Nanomaterials ; Polypyrrole ; Polymer nanocomposite ; Nanoparticle ; Composite material ; Nanotechnology ; Electrical engineering ; Engineering Electromagnetic wave absorption materials ; Advanced Energy Technologies and Civil Engineering Innovations ; Structural Behavior of Reinforced Concrete
Authors: Jian Yang | Suxi Wang | Jianwei Xu | Xian Jun Loh | Qiang Zhu | Xiao Renshaw Wang
Source: ACS Nano (review, 2023-05-12)
Field: Materials Science — Materials Chemistry

Two-Dimensional Layered Materials Meet Perovskite Oxides: A Combination for High-Performance Electronic Devices As the Si-based transistors scale down to atomic dimensions, the basic principle of current electronics, which heavily relies on the tunable charge degree of freedom, faces increasing challenges to meet the future requirements of speed, switching energy, heat dissipation, and packing density as well as functionalities. Heterogeneous integration, where dissimilar layers of materials and functionalities are unrestrictedly stacked at an atomic scale, is appealing for next-generation electronics, such as multifunctional, neuromorphic, spintronic, and ultralow-power devices, because it unlocks technologically useful interfaces of distinct functionalities. Recently, the combination of functional perovskite oxides and two-dimensional layered materials (2DLMs) led to unexpected functionalities and enhanced device performance. In this paper, we review the recent progress of the heterogeneous integration of perovskite oxides and 2DLMs from the perspectives of fabrication and interfacial properties, electronic applications, and challenges as well as outlooks. In particular, we focus on three types of attractive applications, namely field-effect transistors, memory, and neuromorphic electronics. The van der Waals integration approach is extendible to other oxides and 2DLMs, leading to almost unlimited combinations of oxides and 2DLMs and contributing to future high-performance electronic and spintronic devices. Electronics ; Neuromorphic engineering ; Materials science ; Nanotechnology ; Perovskite (structure) ; Spintronics ; Transistor ; Fabrication ; Field-effect transistor ; Engineering physics ; Computer science ; Electrical engineering ; Voltage ; Physics ; Ferromagnetism ; Engineering Ferroelectric and Piezoelectric Materials ; Electronic and Structural Properties of Oxides ; Perovskite Materials and Applications
Authors: Roger Monreal‐Corona | Àlex Díaz‐Jiménez | Anna Roglans | Albert Poater | Anna Pla‐Quintana
Source: Advanced Synthesis & Catalysis (article, 2023-02-07)
Field: Chemistry — Organic Chemistry

Indolizine Synthesis through Annulation of Pyridinium 1,4‐Thiolates and Copper Carbenes: A Predictive Catalysis Approach Abstract Predictive catalysis was applied to the reaction of pyridinium 1,4‐zwitterionic thiolates with a copper carbene. Theoretical calculations were first performed to determine the suitability of their annulation reaction and to make predictions about the performance of different copper salts, diazo species, and pyridinium derivatives. With calculations in hand, the experimental conditions were optimized, the scope of the reaction was assessed, and the precision of the predictions was evaluated. Yields up to 90% were obtained for the synthesis of indolizine scaffolds in the reactivity of pyridinium 1,4‐zwitterionic thiolates with a metal carbene. magnified image Pyridinium ; Indolizine ; Chemistry ; Annulation ; Carbene ; Reactivity (psychology) ; Catalysis ; Diazo ; Copper ; Combinatorial chemistry ; Organic chemistry ; Medicinal chemistry Synthesis and Reactivity of Heterocycles ; Cyclopropane Reaction Mechanisms ; Synthesis and Characterization of Pyrroles
Authors: Shuying Feng | Xin Xie | Junjie Liu | Aifang Li | Qianqian Wang | Dandan Guo | Shuxuan Li | Yalan Li | Zilong Wang | Tao Guo | Jin Zhou | Doris Ying Ying Tang | Pau Loke Show
Source: Journal of Nanobiotechnology (review, 2023-10-10)
Field: Materials Science — Materials Chemistry

A potential paradigm in CRISPR/Cas systems delivery: at the crossroad of microalgal gene editing and algal-mediated nanoparticles Microalgae as the photosynthetic organisms offer enormous promise in a variety of industries, such as the generation of high-value byproducts, biofuels, pharmaceuticals, environmental remediation, and others. With the rapid advancement of gene editing technology, CRISPR/Cas system has evolved into an effective tool that revolutionised the genetic engineering of microalgae due to its robustness, high target specificity, and programmability. However, due to the lack of robust delivery system, the efficacy of gene editing is significantly impaired, limiting its application in microalgae. Nanomaterials have become a potential delivery platform for CRISPR/Cas systems due to their advantages of precise targeting, high stability, safety, and improved immune system. Notably, algal-mediated nanoparticles (AMNPs), especially the microalgae-derived nanoparticles, are appealing as a sustainable delivery platform because of their biocompatibility and low toxicity in a homologous relationship. In addition, living microalgae demonstrated effective and regulated distribution into specified areas as the biohybrid microrobots. This review extensively summarised the uses of CRISPR/Cas systems in microalgae and the recent developments of nanoparticle-based CRISPR/Cas delivery systems. A systematic description of the properties and uses of AMNPs, microalgae-derived nanoparticles, and microalgae microrobots has also been discussed. Finally, this review highlights the challenges and future research directions for the development of gene-edited microalgae. CRISPR ; Genome editing ; Biochemical engineering ; Nanotechnology ; Gene delivery ; Computer science ; Computational biology ; Biotechnology ; Biology ; Gene ; Genetic enhancement ; Materials science ; Engineering ; Genetics Advanced Nanomaterials in Catalysis ; CRISPR and Genetic Engineering ; Micro and Nano Robotics
Authors: Elena M. Slavinskaya | Andrey I. Stadnichenko | Jon Eunan Quinlivan Domínguez | Olga A. Stonkus | Mykhailo Vorokhta | Břetislav Šmíd | Pablo Castro-Latorre | Albert Bruix | Konstantin M. Neyman | А. И. Боронин
Source: Journal of Catalysis (article, 2023-03-06)
Field: Materials Science — Materials Chemistry

States of Pt/CeO2 catalysts for CO oxidation below room temperature CO molecules can be efficiently oxidized over Pt/CeO2 catalysts, but the stability and reactivity of different states of Pt in the catalysts are still unclear. Here we combine experimental and computational methods to characterize Pt/CeO2 catalysts subjected to reductive and oxidative pre-treatments and exposed to CO oxidation reaction conditions. Particles of metallic Pt, known to be catalytically active at elevated temperature, are shown to be precursors for the formation, under operando conditions, of more stable PtOx particles that enable CO oxidation below room temperature. These PtOx particles are similarly stable to – but more active than – atomically dispersed Pt2+ species. The results and approaches presented in this study illustrate the complex response of catalytic materials to reaction conditions and pave the way for future efforts to improve Pt/CeO2 and similar catalysts using dedicated pre-treatment strategies. Catalysis ; Chemistry ; Reactivity (psychology) ; Redox ; Metal ; Reaction conditions ; Heterogeneous catalysis ; Chemical engineering ; Inorganic chemistry ; Nanotechnology ; Organic chemistry ; Materials science Catalytic Processes in Materials Science ; Catalysis and Oxidation Reactions ; Electrocatalysts for Energy Conversion
Authors: Hever Yuritzy Vargas-Molinero | Aracely Serrano‐Medina | Kenia Palomino | Eduardo Alberto López‐Maldonado | Luis Jesús Villarreal-Gómez | Graciela Lizeth Pérez-González | José Manuel Cornejo‐Bravo
Source: Micromachines (review, 2023-01-14)
Field: Materials Science — Biomaterials

Hybrid Systems of Nanofibers and Polymeric Nanoparticles for Biological Application and Delivery Systems Nanomedicine is a new discipline resulting from the combination of nanotechnology and biomedicine. Nanomedicine has contributed to the development of new and improved treatments, diagnoses, and therapies. In this field, nanoparticles have notable importance due to their unique properties and characteristics, which are useful in different applications, including tissue engineering, biomarkers, and drug delivery systems. Electrospinning is a versatile technique used to produce fibrous mats. The high surface area of the electrospun mats makes them suitable for applications in fields using nanoparticles. Electrospun mats are used for tissue engineering, wound dressing, water-treatment filters, biosensors, nanocomposites, medical implants, protective clothing materials, cosmetics, and drug delivery systems. The combination of nanoparticles with nanofibers creates hybrid systems that acquire properties that differ from their components' characteristics. By utilizing nanoparticles and nanofibers composed of dissimilar polymers, the two synergize to improve the overall performance of electrospinning mats and nanoparticles. This review summarizes the hybrid systems of polymeric nanoparticles and polymeric nanofibers, critically analyzing how the combination improves the properties of the materials and contributes to the reduction of some disadvantages found in nanometric devices and systems. Electrospinning ; Nanomedicine ; Nanotechnology ; Nanofiber ; Materials science ; Drug delivery ; Nanoparticle ; Tissue engineering ; Polymer ; Biomedical engineering ; Engineering ; Composite material Electrospun Nanofibers in Biomedical Applications ; Polymer Nanocomposite Synthesis and Irradiation ; Electrohydrodynamics and Fluid Dynamics
Authors: Marvin Treger | Adrian Hannebauer | Andreas Schaate | Jan Luca Budde | Peter Behrens | Andreas Schneider
Source: Physical Chemistry Chemical Physics (article, 2023-01-01)
Field: Chemistry — Inorganic Chemistry

Tuning the optical properties of the metal–organic framework UiO-66 <i>via</i> ligand functionalization Metal-organic frameworks (MOFs) are a promising class of materials for optical applications, especially due to their modular design which allows fine-tuning of the relevant properties. The present theoretical study examines the Zr-based UiO-66-MOF and derivatives of it with respect to their optical properties. Starting from the well-known monofunctional amino- and nitro-functionalized UiO-66 derivatives, we introduce novel UiO-66-type MOFs containing bifunctional push-pull 1,4-benzenedicarboxylate (<i>bdc</i>) linkers. The successful synthesis of such a novel UiO-66 derivative is also reported. It was carried out using a <i>para</i>-nitroaniline (PNA)-based <i>bdc</i>-analogue linker. Applying density functional theory (DFT), suitable models for all UiO-66-MOF analogues were generated by assessing different exchange-correlation functionals. Afterwards, HSE06 hybrid functional calculations were performed to obtain the electronic structures and optical properties. The detailed HSE06 electronic structure calculations were validated with UV-Vis measurements to ensure reliable results. Finally, the refractive index dispersion of the seven UiO-66-type materials is compared, showing the possibility to tailor the optical properties by the use of functionalized linker molecules. Specifically, the refractive index can be varied over a wide range from 1.37 to 1.78. Surface modification ; Metal-organic framework ; Ligand (biochemistry) ; Chemistry ; Metal ; Materials science ; Combinatorial chemistry ; Physical chemistry ; Organic chemistry ; Receptor ; Adsorption Metal-Organic Frameworks: Synthesis and Applications ; Lanthanide and Transition Metal Complexes ; Magnetism in coordination complexes
Authors: Jianfei Sui | Ming‐Liang Gao | Bing Qian | Chengyuan Liu | Yang Pan | Zheng Meng | Daqiang Yuan | Hai‐Long Jiang
Source: Science Bulletin (article, 2023-07-24)
Field: Chemistry — Inorganic Chemistry

Bioinspired microenvironment modulation of metal–organic framework-based catalysts for selective methane oxidation Catalysis ; Methane monooxygenase ; Porphyrin ; Selectivity ; Chemistry ; Methane ; Adsorption ; Methanol ; Alkyl ; Anaerobic oxidation of methane ; Metal-organic framework ; Combinatorial chemistry ; Metal ; Chemical engineering ; Photochemistry ; Organic chemistry Metal-Organic Frameworks: Synthesis and Applications ; Catalytic Processes in Materials Science ; Nanoplatforms for cancer theranostics
Authors: Alessio Zuliani | Ma Carmen Castillejos | Noureddine Khiar
Source: Green Chemistry (article, 2023-01-01)
Field: Chemistry — Inorganic Chemistry

Continuous flow synthesis of PCN-222 (MOF-545) with controlled size and morphology: a sustainable approach for efficient production The first synthesis of Zirconium-based MOF PCN-222 with defined morphology using continuous flow chemistry is reported. The potential for biomedical applications is explored by loading a thio- N -acetyl galactosamine-PEG-sulfate ligand. Continuous flow ; Chemistry ; Morphology (biology) ; Sulfate ; Ligand (biochemistry) ; Zirconium ; Chemical engineering ; Flow chemistry ; Combinatorial chemistry ; Nanotechnology ; Organic chemistry ; Materials science ; Biochemistry ; Biochemical engineering ; Catalysis ; Engineering Metal-Organic Frameworks: Synthesis and Applications ; Nanomaterials for catalytic reactions ; Advanced Photocatalysis Techniques
Authors: Wenhui Niu | Yubin Fu | Gianluca Serra | Kun Liu | Jörn Droste | Yeonju Lee | Zhitian Ling | Fugui Xu | José D. Cojal González | Andrea Lucotti | Jürgen P. Rabe | Michael Ryan Hansen | Wojciech Pisula | Paul W. M. Blom | Carlos‐Andres Palma | Matteo Tommasini | Yiyong Mai | Ji Ma | Xinliang Feng
Source: Angewandte Chemie International Edition (article, 2023-06-19)
Field: Materials Science — Materials Chemistry

Bottom‐up Solution Synthesis of Graphene Nanoribbons with Precisely Engineered Nanopores The incorporation of nanopores into graphene nanostructures has been demonstrated as an efficient tool in tuning their band gaps and electronic structures. However, precisely embedding the uniform nanopores into graphene nanoribbons (GNRs) at the atomic level remains underdeveloped especially for in-solution synthesis due to the lack of efficient synthetic strategies. Herein we report the first case of solution-synthesized porous GNR (pGNR) with a fully conjugated backbone via the efficient Scholl reaction of tailor-made polyphenylene precursor (P1) bearing pre-installed hexagonal nanopores. The resultant pGNR features periodic subnanometer pores with a uniform diameter of 0.6 nm and an adjacent-pores-distance of 1.7 nm. To solidify our design strategy, two porous model compounds (1 a, 1 b) containing the same pore size as the shortcuts of pGNR, are successfully synthesized. The chemical structure and photophysical properties of pGNR are investigated by various spectroscopic analyses. Notably, the embedded periodic nanopores largely reduce the π-conjugation degree and alleviate the inter-ribbon π-π interactions, compared to the nonporous GNRs with similar widths, affording pGNR with a notably enlarged band gap and enhanced liquid-phase processability. Nanopore ; Graphene ; Materials science ; Ribbon ; Nanotechnology ; Nanostructure ; Porosity ; Graphene nanoribbons ; Band gap ; Conjugated system ; Porous medium ; Phase (matter) ; Chemical engineering ; Optoelectronics ; Polymer ; Chemistry ; Composite material ; Organic chemistry Graphene research and applications ; Nanopore and Nanochannel Transport Studies ; Supercapacitor Materials and Fabrication
Authors: Frédéric Dumur
Source: European Polymer Journal (article, 2023-02-01)
Field: Chemistry — Organic Chemistry

Recent advances on photobleachable visible light photoinitiators of polymerization Photopolymer ; Visible spectrum ; Polymerization ; Light-emitting diode ; Materials science ; Light field ; Photoinitiator ; Nanotechnology ; Optoelectronics ; Polymer ; Optics ; Monomer ; Composite material ; Physics Photopolymerization techniques and applications ; Additive Manufacturing and 3D Printing Technologies ; Dental materials and restorations
Authors: Dawei Zhang | Meng Li | Chuan‐Feng Chen
Source: Science China Materials (article, 2023-09-19)
Field: Materials Science — Materials Chemistry

Axially chiral materials exhibiting blue-emissive ultralong organic phosphorescence and intense circularly polarized luminescence Phosphorescence ; Materials science ; Intersystem crossing ; Luminescence ; Exciton ; Axial symmetry ; Photochemistry ; Afterglow ; Singlet state ; Optoelectronics ; Optics ; Fluorescence ; Atomic physics ; Physics ; Chemistry ; Condensed matter physics Luminescence and Fluorescent Materials ; Synthesis and Properties of Aromatic Compounds
Authors: Qasim Shakir Kahdim | N. Abdelmoula | Hassan Al-Karagoly | Salim Albukhaty | Jabbar A. A. Al-Saaidi
Source: BioTech (article, 2023-02-12)
Field: Materials Science — Materials Chemistry

Fabrication of a Polycaprolactone/Chitosan Nanofibrous Scaffold Loaded with Nigella sativa Extract for Biomedical Applications In this study, biocompatible electrospun nanofiber scaffolds were produced using poly(-caprolactone (PCL)/chitosan (CS) and <i>Nigella sativa</i> (NS) seed extract, and their potential for biomedical applications was investigated. Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), total porosity measurements, and water contact angle measurements were used to evaluate the electrospun nanofibrous mats. Additionally, the antibacterial activities of <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> were investigated, as well as cell cytotoxicity and antioxidant activity, using MTT and DPPH assays, respectively. The obtained PCL/CS/NS nanofiber mat was observed by SEM to have a homogeneous and bead-free morphology, with average diameters of 81.19 ± 4.38 nm. Contact angle measurements showed that the wettability of the electrospun PCL/Cs fiber mats decreased with the incorporation of NS when compared to the PCL/CS nanofiber mats. Efficient antibacterial activity against <i>S. aureus</i> and <i>E. coli</i> was displayed, and an in vitro cytotoxic assay demonstrated that the normal murine fibroblast cell line (L929 cells) remained viable after 24, 48, and 72 h following direct contact with the produced electrospun fiber mats. The results suggest that the PCL/CS/NS hydrophilic structure and the densely interconnected porous design are biocompatible materials, with the potential to treat and prevent microbial wound infections. Nanofiber ; Contact angle ; Chitosan ; Polycaprolactone ; Antibacterial activity ; Scanning electron microscope ; Materials science ; MTT assay ; Electrospinning ; Fourier transform infrared spectroscopy ; Biocompatibility ; Nuclear chemistry ; DPPH ; Chemistry ; Chemical engineering ; Composite material ; Organic chemistry ; Antioxidant ; In vitro ; Polymer ; Biochemistry Nanoparticles: synthesis and applications ; Electrospun Nanofibers in Biomedical Applications ; Graphene and Nanomaterials Applications
Authors: Manas Kumar Bera | Sanjib Sarmah | Dines Chandra Santra | Masayoshi Higuchi
Source: Coordination Chemistry Reviews (article, 2023-12-12)
Field: Chemistry — Inorganic Chemistry

Heterometallic supramolecular polymers: From synthesis to properties and applications Supramolecular chemistry ; Chemistry ; Nanotechnology ; Thriving ; Polymer ; Supramolecular polymers ; Combinatorial chemistry ; Ion ; Materials science ; Molecule ; Organic chemistry Metal-Organic Frameworks: Synthesis and Applications ; Polyoxometalates: Synthesis and Applications ; Covalent Organic Framework Applications
Authors: Paul Galanopoulo | Noémie Gil | Didier Gigmès | Catherine Lefay | Yohann Guillaneuf | Maëlle Lages | Julien Nicolas | Franck D’Agosto | Muriel Lansalot
Source: Angewandte Chemie International Edition (article, 2023-02-23)
Field: Chemistry — Organic Chemistry

RAFT‐Mediated Emulsion Polymerization‐Induced Self‐Assembly for the Synthesis of Core‐Degradable Waterborne Particles Poly(N-acryloylmorpholine) (PNAM)-decorated waterborne nanoparticles comprising a core of either degradable polystyrene (PS) or poly(n-butyl acrylate) (PBA) were synthesized by polymerization-induced self-assembly (PISA) in water. A PNAM bearing a trithiocarbonate chain end (PNAM-TTC) was extended via reversible addition-fragmentation chain transfer (RAFT)-mediated emulsion copolymerization of either styrene (S) or n-butyl acrylate (BA) with dibenzo[c,e]oxepane-5-thione (DOT). Well-defined amphiphilic block copolymers were obtained. The in situ self-assembly of these polymers resulted in the formation of stable nanoparticles. The insertion of thioester units in the vinylic blocks enabled their degradation under basic conditions. The same strategy was then applied to the emulsion copolymerization of BA with DOT using a poly(ethylene glycol) (PEG) equipped with a trithiocarbonate end group, resulting in PEG-decorated nanoparticles with degradable PBA-based cores. Copolymer ; Raft ; Chain transfer ; Polymer chemistry ; Ethylene glycol ; Butyl acrylate ; Amphiphile ; Emulsion polymerization ; Reversible addition−fragmentation chain-transfer polymerization ; Acrylate ; Polymerization ; PEG ratio ; Materials science ; Styrene ; Polymer ; Polystyrene ; Chemistry ; Radical polymerization ; Organic chemistry Advanced Polymer Synthesis and Characterization ; biodegradable polymer synthesis and properties ; Polymer Surface Interaction Studies