jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Yunhui Wen | Kaijuan Li | Jiaqiu Luo | Weixiao Feng | Shaowei Shi
Source: Advanced Materials (article, 2024-04-24)
Field: Materials Science — Polymers and Plastics

Thermal Welding of Liquids Welding of thermoplastics is a common practice in many industrial sectors, but it has yet to be realized with fluids. Here, the thermal welding of liquids by using the assembly and jamming of nanoparticle surfactants (NPSs) at liquid-liquid interfaces is reported. By fine-tuning the dynamic interaction strength within NPSs, the interfacial activity of NPSs, as well as the binding energy of NPSs to the interface can be precisely controlled, leading to a dynamic exchange of NPSs, maximizing the reduction in the interfacial energy. With NPSs jammed at the interface, the structures of liquids can be manipulated to complex geometries by applying an external force and, due to the temperature responsiveness of NPSs, when bringing liquids into contact and heating the system, welding of liquids can be achieved. This work provides a straightforward strategy for the construction of modular all-liquid fluidics, opening up numerous opportunities in fields like biotechnology, healthcare, and materials science. Materials science ; Welding ; Thermal ; Metallurgy ; Composite material ; Thermodynamics Polymer composites and self-healing ; Surface Modification and Superhydrophobicity ; Corrosion Behavior and Inhibition
Authors: Roman Staňo | Jéré J. van Lente | Saskia Lindhoud | Peter Košovan
Source: Macromolecules (article, 2024-01-18)
Field: Chemistry — Physical and Theoretical Chemistry

Sequestration of Small Ions and Weak Acids and Bases by a Polyelectrolyte Complex Studied by Simulation and Experiment Mixing of oppositely charged polyelectrolytes can result in phase separation into a polymer-poor supernatant and a polymer-rich polyelectrolyte complex (PEC). We present a new coarse-grained model for the Grand-reaction method that enables us to determine the composition of the coexisting phases in a broad range of pH and salt concentrations. We validate the model by comparing it to recent simulations and experimental studies, as well as our own experiments on poly(acrylic acid)/poly(allylamine hydrochloride) complexes. The simulations using our model predict that monovalent ions partition approximately equally between both phases, whereas divalent ones accumulate in the PEC phase. On a semiquantitative level, these results agree with our own experiments, as well as with other experiments and simulations in the literature. In the sequel, we use the model to study the partitioning of a weak diprotic acid at various pH values of the supernatant. Our results show that the ionization of the acid is enhanced in the PEC phase, resulting in its preferential accumulation in this phase, which monotonically increases with the pH. Currently, this effect is still waiting to be confirmed experimentally. We explore how the model parameters (particle size, charge density, permittivity, and solvent quality) affect the measured partition coefficients, showing that fine-tuning of these parameters can make the agreement with the experiments almost quantitative. Nevertheless, our results show that charge regulation in multivalent solutes can potentially be exploited in engineering the partitioning of charged molecules in PEC-based systems at various pH values. Polyelectrolyte ; Chemistry ; Polymer ; Acrylic acid ; Ion ; Electrostatics ; Phase (matter) ; Ionization ; Solvent ; Chemical physics ; Monomer ; Physical chemistry ; Organic chemistry Electrostatics and Colloid Interactions ; Surfactants and Colloidal Systems ; Material Dynamics and Properties
Authors: Yibo Zhang | Suman Itani | Kamal Khanal | Emmanuel Okyere | Gavin Smith | Koichiro Takahashi | Jiadong Zang
Source: Journal of Magnetism and Magnetic Materials (article, 2024-03-28)
Field: Materials Science — Materials Chemistry

GPTArticleExtractor: An automated workflow for magnetic material database construction Workflow ; Computer science ; Database Machine Learning in Materials Science ; Advanced Materials Characterization Techniques ; X-ray Diffraction in Crystallography
Authors: Mingliang Zhang | Jinchan Zhao | Sinong Wang | Zhenyu Dai | Shuaitao Qin | Shiliang Mei | Wanlu Zhang | Ruiqian Guo
Source: Journal of Colloid and Interface Science (article, 2024-08-22)
Field: Materials Science — Materials Chemistry

Preventive conservation of paper-based relics with visible light high-transmittance ultraviolet blocking film based on carbon dots Transmittance ; Absorbance ; Ultraviolet ; Materials science ; Computer science ; Optoelectronics ; Carbon fibers ; Nanotechnology ; Optics ; Composite material ; Physics ; Composite number Carbon and Quantum Dots Applications ; Advanced Photocatalysis Techniques ; Mercury impact and mitigation studies
Authors: Z. Y. Khattari
Source: Silicon (article, 2024-02-12)
Field: Materials Science — Materials Chemistry

Structural, Elastic, Optical and Radiation Shielding Properties of Orthosilicate-based Crystals: Insights form Hirshfeld Topological Geometries Materials science ; Monoclinic crystal system ; Elastic modulus ; Effective atomic number ; Crystal (programming language) ; Electromagnetic shielding ; Shear modulus ; Crystal structure ; Attenuation ; Crystallography ; Optics ; Composite material ; Physics ; Chemistry Nuclear materials and radiation effects ; Radiation Shielding Materials Analysis ; X-ray Diffraction in Crystallography
Authors: Honghan Ji | Bin Wu | Enquan Tian | Chao Ren | Xue Jin | Liangliang Zhu | Pengfei Duan
Source: Science China Chemistry (article, 2024-06-20)
Field: Materials Science — Materials Chemistry

Upconverting and downshifting circularly polarized luminescence in a superstructural helix Luminescence ; Helix (gastropod) ; Materials science ; Physics ; Optics ; Biology ; Ecology Luminescence Properties of Advanced Materials ; Luminescence and Fluorescent Materials ; Synthesis and Properties of Aromatic Compounds
Authors: Daegun Kim | Jimin Kim | Sein Chung | Kilwon Cho
Source: Advanced Electronic Materials (article, 2024-06-20)
Field: Materials Science — Materials Chemistry

Quantum‐Dot‐Induced Energy Filtering Effect in Organic Thermoelectric Nanocomposites Abstract Thermoelectric (TE) charge transport in organic TE nanocomposite systems is a critical consideration in designing high‐performance TE materials. Here, the relationship between the TE properties and energy structure of conducting polymer/quantum dot (QD) nanocomposites is systematically investigated by developing a potential wall or potential well in poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) with CdTe QDs. The added QDs are primarily distributed within the electrically insulating PSS shell and act as stepping stones for charge transport between PEDOT‐rich grains. The embedded QDs generate an energy‐filtering effect, which is induced by both potential wall and potential well states established by the QDs in the PEDOT:PSS films. The induced energy‐filtering effect increases the Seebeck coefficient S with limited loss of electrical conductivity σ , thereby overcoming the TE trade‐off relation S ∝ σ −1/4 . The energy‐filtering effect is optimized by carefully controlling the QD size. The PEDOT:PSS/QD nanocomposite containing the smallest QDs exhibits a power factor of 173.8 µW m −1 K −2 , which is 80% larger than the value for the pristine PEDOT:PSS film. This work suggests a strategy for designing TE nanocomposites with improved TE performance and emphasizes the importance of fine‐tuning the interfacial energy gap to achieve an effective energy‐filtering effect. PEDOT:PSS ; Materials science ; Nanocomposite ; Quantum dot ; Seebeck coefficient ; Thermoelectric effect ; Optoelectronics ; Charge carrier ; Conductive polymer ; Nanotechnology ; Nanoparticle ; Polymer ; Composite material ; Thermal conductivity Advanced Thermoelectric Materials and Devices ; Conducting polymers and applications ; Advanced battery technologies research
Authors: Michele Mattera | Anh T. Ngo | João P. Vale | Carlos Franco | Semih Sevim | Maria Guix | Roc Matheu | Tiago Sotto Mayor | Salvador Pané | Josep Puigmartí‐Luis
Source: Chemistry of Materials (article, 2024-01-05)
Field: Materials Science — Materials Chemistry

Large-Scale and Rapid Processing of 3D COFs via 3D-Controlled Reaction–Diffusion Zones Covalent organic frameworks (COFs) are an emerging class of two-dimensional (2D) or three-dimensional (3D) porous structures. Most COFs are typically prepared via solvothermal methods involving long reaction times (>12 h) that generally result in unprocessable powders, significantly hindering their straightforward integration into devices and applications. Current processing methods for 2D COFs have not been implemented for 3D COFs, probably due to the lack of preassembly mechanisms among the 3D COF precursors during synthesis. Here, we report a pioneering synthetic environment that achieves two objectives: precise control over the reaction time of 3D COF precursors through controlled diffusion, ensuring the absence of turbulent mixing, and the ability to fine-tune the specific reaction zone where the reaction and controlled diffusion of the 3D COF precursors will occur. We further demonstrate that controlling these two features in 3D creates an unparalleled synthetic environment, allowing for a rapid one-pot synthesis of 3D COFs, with their formation occurring in less than a minute. Additionally, this approach yields self-standing 3D COF fibers on a centimeter scale, showcasing the versatility and potential of the approach presented for scalable production of 3D COFs as well as for their seamless integration into devices and patterning strategies. Nanotechnology ; Scalability ; Diffusion ; Materials science ; Porosity ; 3D printing ; Computer science ; Physics Covalent Organic Framework Applications ; Metal-Organic Frameworks: Synthesis and Applications ; Luminescence and Fluorescent Materials
Authors: Philipp Dabringhaus | Harald Scherer | Ingo Krossing
Source: Nature Synthesis (article, 2024-04-26)
Field: Chemistry — Organic Chemistry

In situ formation of reactive (di)gallenes for bond activation Chemistry ; Steric effects ; Cationic polymerization ; Reactivity (psychology) ; Stereochemistry ; Reactive intermediate ; Fluorobenzene ; Medicinal chemistry ; Catalysis ; Polymer chemistry ; Organic chemistry Organoboron and organosilicon chemistry ; Synthesis and characterization of novel inorganic/organometallic compounds ; Organometallic Complex Synthesis and Catalysis
Authors: Guanglin Zhang | Bingkun Wang | Huijuan Wu | Jinqiu Zhang | Shanshui Lian | Wenjun Bai | Shan Zhang | Zhiduo Liu | Siwei Yang | Guqiao Ding | Caichao Ye | Li Zheng | Gang Wang
Source: Nano Letters (article, 2024-07-22)
Field: Materials Science — Materials Chemistry

Nitrogen-Doped 3D-Graphene Advances Near-Infrared Photodetector for Logic Circuits and Image Sensors Overcoming 2D Limitations The limitations of two-dimensional (2D) graphene in broadband photodetector are overcome by integrating nitrogen (N) doping into three-dimensional (3D) structures within silicon (Si) via plasma-assisted chemical vapor deposition (PACVD) technology. This contributes to the construction of vertical Schottky heterojunction broad-spectrum photodetectors and applications in logic devices and image sensors. The natural nanoscale resonant cavity structure of 3D-graphene enhances photon capture efficiency, thereby increasing photocarrier generation. N-doping can fine-tune the electronic structure, advancing the Schottky barrier height and reducing dark current. The as-fabricated photodetector exhibits exceptional self-driven photoresponse, especially at 1550 nm, with an excellent photoresponsivity (79.6 A/W), specific detectivity (10<sup>13</sup> Jones), and rapid response of 130 μs. Moreover, it enables logic circuits, high-resolution pattern image recognition, and broadband spectra recording across the visible to near-infrared range (400-1550 nm). This research will provide new views and technical support for the development and widespread application of high-performance semiconductor-based graphene broadband detectors. Photodetector ; Graphene ; Materials science ; Optoelectronics ; Chemical vapor deposition ; Infrared ; Doping ; Heterojunction ; Schottky barrier ; Silicon ; Nanotechnology ; Optics ; Physics ; Diode Graphene research and applications ; Nanowire Synthesis and Applications ; 2D Materials and Applications
Authors: Sumanta Chowdhury | Abhishek Sharma | Partha Pratim Das | Preeti Rathi | Prem Felix Siril
Source: Journal of Colloid and Interface Science (article, 2024-03-13)
Field: Materials Science — Materials Chemistry

Fine-tuning covalent organic frameworks for structure-activity correlation via adsorption and catalytic studies Adsorption ; Crystallinity ; Heteroatom ; Covalent organic framework ; Catalysis ; Covalent bond ; Chemistry ; Chemical engineering ; Cycloaddition ; Materials science ; Organic chemistry ; Crystallography Covalent Organic Framework Applications ; Metal-Organic Frameworks: Synthesis and Applications ; Membrane Separation and Gas Transport
Authors: Hugo Salazar | Amaia Zarandona | Qi Zhang | Sylvain Mendez
Source: Chemical Engineering Journal (article, 2024-12-31)
Field: Materials Science — Materials Chemistry

Unlocking the potential of sonophotocatalysis for enhanced water remediation Environmental remediation ; Environmental science ; Groundwater remediation ; Waste management ; Environmental engineering ; Environmental chemistry ; Environmental planning ; Chemistry ; Engineering ; Contamination ; Ecology Ultrasound and Cavitation Phenomena ; Advanced oxidation water treatment ; Environmental remediation with nanomaterials
Authors: Yong-Woo Choi | Uiseok Hwang | Jeongwon Ho | Woorak Park | Tufail Hassan | Chong Min Koo | Jae‐Do Nam | Young Jae Song | Pil J. Yoo
Source: Carbon (article, 2024-12-03)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Enhanced electromagnetic interference shielding in cement composites utilizing carbon fiber clustered networks with dual different lengths Composite material ; Materials science ; Electromagnetic shielding ; Cement ; Electromagnetic interference ; Dual (grammatical number) ; Fiber ; Interference (communication) ; Carbon fibers ; Composite number ; Computer science ; Telecommunications Electromagnetic wave absorption materials ; Advanced Antenna and Metasurface Technologies ; Advanced Energy Technologies and Civil Engineering Innovations
Authors: J. Simons | Nabanita Hazra | Alexander V. Petrunin | Jérôme J. Crassous | Walter Richtering | Max Hohenschutz
Source: ACS Nano (article, 2024-02-28)
Field: Materials Science — Materials Chemistry

Nonionic Microgels Adapt to Ionic Guest Molecules: Superchaotropic Nanoions Microgels are commonly applied as solute carriers, where the size, density, and functionality of the microgels depend on solute binding. As representatives for ionic solutes with high affinity for the microgel, we study here the effect of superchaotropic Keggin polyoxometalates (POMs) PW<sub>12</sub>O<sub>40</sub><sup>3-</sup> (PW) and SiW<sub>12</sub>O<sub>40</sub><sup>4-</sup> (SiW) on the aqueous swelling and internal structure of nonionic poly(<i>N</i>-isopropylacrylamide) (pNiPAM) microgels by light scattering techniques and small-angle X-ray scattering. Due to their weak hydration, these POMs bind spontaneously to the microgels at millimolar concentrations. The microgels thus become charged and swell at low POM concentration, surprisingly without strongly increasing the volume phase transition temperature, and deswell at higher POM concentration. The swelling arises because of the osmotic pressure of dissociated counterions of the POMs, while the deswelling is due to POMs acting as physical cross-links in the microgels under screened electrostatics in NaCl or excess POM solution. This swelling/deswelling transition is sharper for PW than for SiW related to the lower charge density, weaker hydration, and stronger binding of PW. The POMs elicit qualitatively and quantitatively different swelling effects from ionic surfactants and classical salts. Moreover, the network softness and topology govern the swelling response upon POM binding. The softer the microgel, the stronger is the swelling response, while, inside the microgel, regions of high polymer density swell/contract more upon electric charging/cross-linking than regions with low polymer density. POM binding thus enables fine-tuning of microgel properties and highlights the role of network topology in microgel swelling. Because POMs decompose at an alkaline pH, these POM/microgel systems also exhibit pH-responsive swelling in addition to the typical temperature responsiveness of pNiPAM microgels. Ionic bonding ; Molecule ; Ionic liquid ; Materials science ; Chemical engineering ; Nanotechnology ; Chemical physics ; Chemistry ; Ion ; Organic chemistry ; Catalysis Polyoxometalates: Synthesis and Applications ; Supramolecular Self-Assembly in Materials ; Polymer composites and self-healing
Authors: Tomoya Ozaki | Shih‐Yuan Liu
Source: Chemistry - A European Journal (article, 2024-07-26)
Field: Chemistry — Organic Chemistry

Boron‐Nitrogen‐Containing Benzene Valence Isomers Benzene is one of the most ubiquitous structural motifs in chemistry. The valence isomers of benzene have also attracted synthetic chemists' attention due to their unique structures, bonding, and reactivity. We have been investigating boron-nitrogen-containing benzene valence isomers via photoisomerization of 1,2-azaborines. In this contribution, we summarize recent developments of these highly strained BN-heterocyclic compounds including their synthesis, characterization, proposed mechanism of formation, and their potential applications. Boron ; Benzene ; Valence (chemistry) ; Nitrogen ; Chemistry ; Materials science ; Organic chemistry Organoboron and organosilicon chemistry ; Chemical Synthesis and Analysis ; Synthesis and characterization of novel inorganic/organometallic compounds
Authors: Priyabrata Ghana | Shuoyan Xiong | Adjeoda A. Tekpor | B.C. Bailey | Heather A. Spinney | Briana S. Henderson | Theodor Agapie
Source: Journal of the American Chemical Society (article, 2024-07-05)
Field: Chemistry — Organic Chemistry

Catalyst Editing via Post-Synthetic Functionalization by Phosphonium Generation and Anion Exchange for Nickel-Catalyzed Ethylene/Acrylate Copolymerization Rapid, efficient development of homogeneous catalysts featuring desired performance is critical to numerous catalytic transformations but remains a key challenge. Typically, this task relies heavily on ligand design that is often based on trial and error. Herein, we demonstrate a "catalyst editing" strategy in Ni-catalyzed ethylene/acrylate copolymerization. Specifically, alkylation of a pendant phosphine followed by anion exchange provides a high yield strategy for a large number of cationic Ni phosphonium catalysts with varying electronic and steric profiles. These catalysts are highly active in ethylene/acrylate copolymerization, and their behaviors are correlated with the electrophile and the anion used in late-stage functionalization. Chemistry ; Catalysis ; Phosphonium ; Cationic polymerization ; Acrylate ; Copolymer ; Electrophile ; Ethylene ; Polymer chemistry ; Phosphine ; Combinatorial chemistry ; Alkylation ; Homogeneous catalysis ; Surface modification ; Methyl acrylate ; Organic chemistry Organometallic Complex Synthesis and Catalysis ; Asymmetric Hydrogenation and Catalysis ; Catalytic Cross-Coupling Reactions
Authors: Samuel Parcero-Bouzas | Juan Correa | Celia Jimenez-Lopez | Bruno Delgado Gonzalez | Eduardo Fernández-Megía
Source: Biomacromolecules (article, 2024-04-13)
Field: Materials Science — Polymers and Plastics

Modular Synthesis of PEG-Dendritic Block Copolymers by Thermal Azide–Alkyne Cycloaddition with Internal Alkynes and Evaluation of their Self-Assembly for Drug Delivery Applications Linear-dendritic block copolymers assemble in solution due to differences in the solubility or charge properties of the blocks. The monodispersity and multivalency of the dendritic block provide unparalleled control for the design of drug delivery systems when incorporating poly(ethylene glycol) (PEG) as a linear block. An accelerated synthesis of PEG-dendritic block copolymers based on the click and green chemistry pillars is described. The tandem composed of the thermal azide-alkyne cycloaddition with internal alkynes and azide substitution is revealed as a flexible, reliable, atom-economical, and user-friendly strategy for the synthesis and functionalization of biodegradable (polyester) PEG-dendritic block copolymers. The high orthogonality of the sequence has been exploited for the preparation of heterolayered copolymers with terminal alkenes and alkynes, which are amenable for subsequent functionalization by thiol-ene and thiol-yne click reactions. Copolymers with tunable solubility and charge were so obtained for the preparation of various types of nanoassemblies with promising applications in drug delivery. Click chemistry ; Copolymer ; Azide ; Ethylene glycol ; Cycloaddition ; Alkyne ; Combinatorial chemistry ; Surface modification ; PEG ratio ; Materials science ; Drug delivery ; Solubility ; Chemistry ; Polymer chemistry ; Polymer ; Organic chemistry ; Nanotechnology Dendrimers and Hyperbranched Polymers ; Click Chemistry and Applications ; Advanced Polymer Synthesis and Characterization
Authors: Ramón Torres‐Cavanillas | Alicia Forment‐Aliaga
Source: Communications Chemistry (review, 2024-10-26)
Field: Materials Science — Materials Chemistry

Design of stimuli-responsive transition metal dichalcogenides Stimuli-responsive systems are an emerging class of materials in fields as diverse as electronics, optoelectronics, cancer detection, drug delivery, or sensing. Especially focusing on nanomaterials, 2D transition metal dichalcogenides have recently attracted the scientific community's attention due to their remarkable intrinsic stimuli-responsive behaviour upon external stimuli such as pH, light, voltage, or certain pathogens. This significant response can be further enhanced by forming mixed-dimensional heterostructures and by molecular functionalization, capitalizing on chemistry to manipulate and boost their intrinsic stimuli-responsive properties. Furthermore, thanks to the endless possibilities of chemistry, a new class of smart materials based on the combination of stimuli-responsive molecular systems with transition metal dichalcogenides has recently been synthesized. In these materials, the physical properties of the 2D layers are reversibly modified by the switchable molecules, not only enhancing their stimuli-responsive behaviour but also providing memory to the hybrid. Therefore, this review explores the recent breakthroughs in the chemical design of smart transition metal dichalcogenides with built-in responsiveness. Transition metal ; Transition (genetics) ; Materials science ; Nanotechnology ; Chemistry 2D Materials and Applications ; Nanoplatforms for cancer theranostics ; Luminescence and Fluorescent Materials