jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Xuefei Wu | Gautam Bordia | Robert Streubel | Jaffar Hasnain | Cássio Cardoso Santos Pedroso | Bruce E. Cohen | Behzad Rad | Paul D. Ashby | Ahmad K. Omar | Phillip L. Geissler | Dong Wang | Han Xue | Jianjun Wang | Thomas P. Russell
Source: Advanced Functional Materials (article, 2023-02-20)
Field: Materials Science — Materials Chemistry

Ballistic Ejection of Microdroplets from Overpacked Interfacial Assemblies Abstract Spontaneous emulsification, resulting from the assembly and accumulation of surfactants at liquid–liquid interfaces, is an interfacial instability where microdroplets are generated and diffusively spread from the interface until complete emulsification. Here, it is shown that an external magnetic field can modulate the assembly of paramagnetic nanoparticle surfactants (NPSs) at liquid–liquid interfaces to trigger an oversaturation in the areal density of the NPSs at the interface, as evidenced by a marked reduction in the interfacial tension, γ, and corroborated with a magnetostatic continuum theory. Despite the significant reduction in γ, the presence of the magnetic field does not cause stable interfaces to become unstable. Upon rapid removal of the field, however, an explosive ejection of a plume of microdroplets from the surface occurs, a dynamical interfacial instability which is termed explosive emulsification. This explosive event rapidly reduces the areal density of the NPSs to its pre‐field level, stabilizing the interface. The ability to externally suppress or trigger the explosive emulsification and controlled generation of tens of thousands of microdroplets, uncovers an efficient energy storage and release process, that has potential applications for controlled and directed delivery of chemicals and remotely controlled soft microrobots, taking advantage of the ferromagnetic nature of the microdroplets. Explosive material ; Materials science ; Chemical physics ; Instability ; Surface tension ; Nanotechnology ; Magnetic field ; Paramagnetism ; Nanoparticle ; Area density ; Mechanics ; Condensed matter physics ; Composite material ; Thermodynamics ; Physics ; Chemistry Pickering emulsions and particle stabilization ; Micro and Nano Robotics ; Characterization and Applications of Magnetic Nanoparticles
Authors: Rajiv Kumar | Bhupender S. Chhikara | Simge Er Zeybekler | Dhruv Gupta | Ginpreet Kaur | Mitrabasu Chhillar | A. K. Aggarwal | Abbas Rahdar
Source: Toxicology Research (review, 2023-09-29)
Field: Materials Science — Materials Chemistry

Nanotoxicity of multifunctional stoichiometric cobalt oxide nanoparticles (SCoONPs) with repercussions toward apoptosis, necrosis, and cancer necrosis factor (TNF-α) at nano-biointerfaces Various applications, such as bio-imaging, cell labeling, gene delivery, enhanced chemical stability, and increased biocompatibility, concerning apoptosis, necrosis, and nano-bio interfaces, along with suitable examples. In this analysis, the multi-functional cobalt [Co, CoO, Co<sub>2</sub>(CO)<sub>8</sub> and Co<sub>3</sub>O<sub>4</sub>] nanoparticles (SCoNPs) intricacies (cytogenotoxicity, clastogenicity, and immunomodulatory), nanotoxicity, and associated repercussions have been highlighted and explained. Nanotoxicology ; Nanotechnology ; Tumor necrosis factor alpha ; Biophysics ; Nanomedicine ; Chemistry ; Nanoparticle ; Drug delivery ; Cancer cell ; Apoptosis ; Cell biology ; Materials science ; Cancer ; Biochemistry ; Medicine ; Biology ; Immunology Nanoparticles: synthesis and applications ; Nanoparticle-Based Drug Delivery ; Cell death mechanisms and regulation
Authors: Qi Wang | Yutao Li | Xiao Jian-bin | Lin Xia
Source: Polymers (article, 2023-02-26)
Field: Materials Science — Polymers and Plastics

Intelligent Eucommia ulmoides Rubber/Ionomer Blends with Thermally Activated Shape Memory and Self-Healing Properties Intelligent <i>Eucommia ulmoides</i> rubber (EUR) and ionomer Surlyn resin (SR) blends were prepared and studied in this manuscript. This is the first paper to combine EUR with SR to prepare blends with both the shape memory effect and self-healing capability. The mechanical, curing, thermal, shape memory and self-healing properties were studied by a universal testing machine, differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA), respectively. Experimental results showed that the increase in ionomer content not only improved mechanical and shape memory properties but also endowed the compounds with excellent self-healing ability under the appropriate environmental conditions. Notably, the self-healing efficiency of the composites reached 87.41%, which is much higher than the efficiency of other covalent cross-linking composites. Therefore, these novel shape memory and self-healing blends can expand the use of natural <i>Eucommia ulmoides</i> rubber, such as in special medical devices, sensors and actuators. Materials science ; Eucommia ulmoides ; Composite material ; Differential scanning calorimetry ; Shape-memory alloy ; Natural rubber ; Curing (chemistry) ; Ionomer ; Dynamic mechanical analysis ; Vulcanization ; Self-healing ; Polymer ; Copolymer Polymer composites and self-healing ; Synthetic Organic Chemistry Methods ; Polydiacetylene-based materials and applications
Authors: Teemu Välisalmi | Houari Bettahar | Quan Zhou | Markus B. Linder
Source: International Journal of Biological Macromolecules (article, 2023-08-06)
Field: Materials Science — Biomaterials

Pulling and analyzing silk fibers from aqueous solution using a robotic device Spiders, silkworms, and many other animals can spin silk with exceptional properties. However, artificially spun fibers often fall short of their natural counterparts partly due sub-optimal production methods. A variety of methods, such as wet-, dry-, and biomimetic spinning have been used. The methods are based on extrusion, whereas natural spinning also involves pulling. Another shortcoming is that there is a lack feedback control during extension. Here we demonstrate a robotic fiber pulling device that enables controlled pulling of silk fibers and in situ measurement of extensional forces during the pulling and tensile testing of the pulled fibers. The pulling device was used to study two types of silk-one recombinant spider silk (a structural variant of ADF3) and one regenerated silk fibroin. Also, dextran-a branched polysaccharide-was used as a reference material for the procedure due to its straightforward preparation and storage. No post-treatments were applied. The pulled regenerated silk fibroin fibers achieved high tensile strength in comparison to similar extrusion-based methods. The mechanical properties of the recombinant spider silk fibers seemed to be affected by the liquid-liquid phase separation of the silk proteins. SILK ; Fibroin ; Spinning ; Extrusion ; Materials science ; Ultimate tensile strength ; Composite material ; Fiber ; Spider silk ; Polymer science ; Aqueous solution ; Chemistry Silk-based biomaterials and applications ; Invertebrate Immune Response Mechanisms ; RNA Interference and Gene Delivery
Authors: Brian C. Searle | Allis Chien | Antonius Koller | David H. Hawke | Anthony W. Herren | Jenny Kim Kim | Kimberly A. Lee | Ryan D. Leib | Alissa J. Nelson | Purvi Patel | Jian Ren | Paul M. Stemmer | Yiying Zhu | Benjamin A. Neely | Bhavin Patel
Source: Molecular & Cellular Proteomics (article, 2023-08-30)
Field: Chemistry — Spectroscopy

A Multipathway Phosphopeptide Standard for Rapid Phosphoproteomics Assay Development Recent advances in methodology have made phosphopeptide analysis a tractable problem for many proteomics researchers. There are now a wide variety of robust and accessible enrichment strategies to generate phosphoproteomes while free or inexpensive software tools for quantitation and site localization have simplified phosphoproteome analysis workflow tremendously. As a research group under the Association for Biomolecular Resource Facilities umbrella, the Proteomics Standards Research Group has worked to develop a multipathway phosphopeptide standard based on a mixture of heavy-labeled phosphopeptides designed to enable researchers to rapidly develop assays. This mixture contains 131 mass spectrometry vetted phosphopeptides specifically chosen to cover as many known biologically interesting phosphosites as possible from seven different signaling networks: AMPK signaling, death and apoptosis signaling, ErbB signaling, insulin/insulin-like growth factor-1 signaling, mTOR signaling, PI3K/AKT signaling, and stress (p38/SAPK/JNK) signaling. Here, we describe a characterization of this mixture spiked into a HeLa tryptic digest stimulated with both epidermal growth factor and insulin-like growth factor-1 to activate the MAPK and PI3K/AKT/mTOR pathways. We further demonstrate a comparison of phosphoproteomic profiling of HeLa performed independently in five labs using this phosphopeptide mixture with data-independent acquisition. Despite different experimental and instrumentation processes, we found that labs could produce reproducible, harmonized datasets by reporting measurements as ratios to the standard, while intensity measurements showed lower consistency between labs even after normalization. Our results suggest that widely available, biologically relevant phosphopeptide standards can act as a quantitative "yardstick" across laboratories and sample preparations enabling experimental designs larger than a single laboratory can perform. Raw data files are publicly available in the MassIVE dataset MSV000090564. Phosphopeptide ; Phosphoproteomics ; Computer science ; Chemistry ; Computational biology ; Biology ; Biochemistry ; Phosphorylation ; Protein phosphorylation ; Protein kinase A Advanced Proteomics Techniques and Applications ; Advanced Biosensing Techniques and Applications ; Mass Spectrometry Techniques and Applications
Authors: Yuli Wei | Wu Yang | Hao Guo
Source: ChemistrySelect (article, 2023-08-17)
Field: Materials Science — Materials Chemistry

Functional COFs for Electrochemical Sensing: From Design Principles to Analytical Applications Abstract At present, applications of covalent organic frameworks (COFs), a class of novel crystalline porous materials fabricated by organic structural blocks only containing light elements such as C, H, N, O and B through strong covalent bonds, in electrochemical sensing have entered a period of rapid development and showed great potential in various analytical fields such as environmental analysis, food analysis, pharmaceutical analysis, biological and clinical analysis owing to their unique advantages including regular porosity, large specific surface area, periodical ordered structure, extended π‐conjugated system, abundant functional groups and outstanding thermal and chemical stability. But there are still many concerns that need to be urgently solved for further electrochemical sensing application including improvement of electric conductivity and enhancement of selectivity. Limited by poor conductivity and low recognition ability of primitive COFs, they always need to be further functionalized. To further promote the development of COFs‐based electrochemical sensing technology, here, we summarize and review the recent advances on construction of two‐dimensional functional COFs materials for electrochemical sensing applications and related sensing device setups in detail, including design strategies, preparation methods, modification considerations, sensing principles and analytical applications, and tentatively propose development prospects and outlooks in future. Nanotechnology ; Electrochemistry ; Covalent bond ; Materials science ; Porosity ; Surface modification ; Computer science ; Chemical engineering ; Chemistry ; Electrode ; Engineering ; Organic chemistry ; Composite material Covalent Organic Framework Applications ; Metal-Organic Frameworks: Synthesis and Applications ; Luminescence and Fluorescent Materials
Authors: Min Gao | Yibo Zhao | Zhi‐Jun Zhao | Guangyu Qiu | Yile Tao | Guochen Bao | Ying Du | Martin Spillmann | Jiukai Tang | Soonhyoung Hwang | Jun‐Ho Jeong | Jing Wang
Source: Advanced Materials Technologies (article, 2023-03-14)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Wafer‐Scale Gold Nanomesh via Nanotransfer Printing toward a Cost‐Efficient Multiplex Sensing Platform Abstract Multiplex sensing platforms via large‐scale and cost‐efficient fabrication processes for detecting biological and chemical substance are essential for many applications such as intelligent diagnosis, environmental monitoring, etc. For the past decades, the performance of those sensors has been significantly improved by the rapid development of nanofabrication technologies. However, facile processes with cost‐effectiveness and large‐scale throughput still present challenges. Nano‐transfer printing together with the imprinting process shows potential for the efficient fabrication of 100 nm structures. Herein, a wafer‐scale gold nanomesh (AuNM) structure on glass substrates with 100 nm scale features via nano‐imprinting and secondary transfer printing technology is reported. Furthermore, potential sensing applications are demonstrated towards biochemical substance detection by using AuNM structures as highly responsive substrates for achieving the surface enhanced Raman spectroscopy (SERS), and as working electrodes of electrochemical analysisfor the detection of metallic ions. In the SERS detection mode, different nucleotides can be detected down to 1 n m level and distinguished via theirunique fingerprint patterns. As for electrochemical analysis mode, Pb 2+ ions can be detected out of other interfering components with concentration down to 30 n m . These multimodal sensing mechanisms provide complementary informationand pave the way for low‐cost and high‐performance sensing platforms. Nanotechnology ; Nanomesh ; Materials science ; Multiplex ; Fabrication ; Wafer ; Surface-enhanced Raman spectroscopy ; Nanosensor ; Raman spectroscopy ; Bioinformatics ; Raman scattering Gold and Silver Nanoparticles Synthesis and Applications ; Advanced biosensing and bioanalysis techniques ; Biosensors and Analytical Detection
Authors: Chunlin Hao | Joshua E. Elias | Patrick K. H. Lee | Henry Lam
Source: Microbiome (article, 2023-08-07)
Field: Chemistry — Spectroscopy

metaSpectraST: an unsupervised and database-independent analysis workflow for metaproteomic MS/MS data using spectrum clustering metaSpectraST enables rapid profiling of metaproteomic samples quantitatively, without the need for constructing the protein sequence database or identification of the MS/MS spectra. It maximally preserves information contained in the experimental MS/MS spectra by clustering all of them first and thus is able to better profile the complex microbial communities and highlight their functional changes, as compared with conventional approaches. tag the videobyte in this section as ESM4 Video Abstract. Cluster analysis ; Workflow ; Biology ; Database ; Computational biology ; Computer science ; Bioinformatics ; Artificial intelligence Advanced Proteomics Techniques and Applications ; Metabolomics and Mass Spectrometry Studies ; Genomics and Phylogenetic Studies
Authors: Yonghong Pan | Daofeng Zhou | Tingting Cui | Yu Zhang | Lei Ye | Ye Tian | Ping Zhou | Yi Liu | Hidetoshi Saitoh | Botao Zhang | Hua Li
Source: Progress in Organic Coatings (article, 2023-07-20)
Field: Materials Science — Biomaterials

A facile strategy for fine-tuning the drug release efficacy of poly-L-lactic acid-polycaprolactone coatings by liquid flame spray Polycaprolactone ; Materials science ; Composite number ; Coating ; Lactic acid ; Drug delivery ; Chemical engineering ; Fabrication ; Composite material ; Polymer ; Nanotechnology ; Bacteria biodegradable polymer synthesis and properties ; Antimicrobial agents and applications ; Advanced Drug Delivery Systems
Authors: Petrus C. M. Laan | Eduard O. Bobylev | Felix J. de Zwart | Joppe A. Vleer | Alessandro Troglia | Roland Bliem | Gadi Rothenberg | Joost N. H. Reek | Ning Yan
Source: Chemistry - A European Journal (article, 2023-10-24)
Field: Chemistry — Inorganic Chemistry

Tailoring Secondary Coordination Sphere Effects in Single‐metal‐site Catalysts by Surface Immobilization of Supramolecular Cages Controlling the coordination sphere of heterogeneous single-metal-site catalysts is a powerful strategy for fine-tuning their catalytic properties but is fairly difficult to achieve. To address this problem, we immobilized supramolecular cages where the primary- and secondary coordination sphere are controlled by ligand design. The kinetics of these catalysts were studied in a model reaction, the hydrolysis of ammonia borane, over a temperature range using fast and precise online measurements generating high-precision Arrhenius plots. The results show how catalytic properties can be enhanced by placing a well-defined reaction pocket around the active site. Our fine-tuning yielded a catalyst with such performance that the reaction kinetics are diffusion-controlled rather than chemically controlled. Ammonia borane ; Catalysis ; Coordination sphere ; Arrhenius equation ; Supramolecular chemistry ; Ligand (biochemistry) ; Diffusion ; Kinetics ; Metal ; Materials science ; Coordination complex ; Chemistry ; Chemical engineering ; Coordination number ; Nanotechnology ; Physical chemistry ; Crystallography ; Activation energy ; Organic chemistry ; Thermodynamics ; Dehydrogenation ; Crystal structure Metal-Organic Frameworks: Synthesis and Applications ; Supramolecular Chemistry and Complexes ; Surface Chemistry and Catalysis
Authors: Maria Laura Tummino | Claudia Vineis | Alessio Varesano | Leonarda Francesca Liotta | Monica Rigoletto | Enzo Laurenti | Francesca Deganello
Source: Frontiers in Environmental Engineering (article, 2023-09-04)
Field: Materials Science — Materials Chemistry

Sr0.85Ce0.15Fe0.67Co0.33-xCuxO3 perovskite oxides: effect of B-site copper codoping on the physicochemical, catalytic and antibacterial properties upon UV or thermal activation Perovskite-type compounds have found application in environmental remediation and in clean energy production, fundamental sectors for sustainable development. A challenge for these materials is the fine-tuning of their chemical composition and their chemical-physical characteristics, for example, microstructure, morphology and ability to form oxygen vacancies, through the introduction of dopant elements. In this work, we studied the effect of Cu doping at the B-site of a Ce, Co-doped strontium ferrate perovskite with chemical composition Sr 0.85 Ce 0.15 Fe 0.67 Co 0.33 O 3-δ . Indeed, Sr 0.85 Ce 0.15 Fe 0.67 Co 0.23 Cu 0.10 O 3-δ and Sr 0.85 Ce 0.15 Fe 0.67 Co 0.13 Cu 0.20 O 3-δ powders, where the B-site was codoped with both cobalt and copper, were synthesised by solution combustion synthesis and characterised for their physical-chemical properties by a multi-analytical approach, to assess their behaviour when subjected to different activation methods. The two codoped perovskites were tested 1) as catalysts in the oxidation of soot after activation at high temperatures, 2) as antibacterial agents in ambient conditions or activated by both UV exposure and low-temperature excitation to induce the generation of reactive species. Results demonstrated that these compounds react differently to various stimuli and that the increasing amount of copper, together with the presence of segregated ceria phase, influenced the materials’ features and performances. The knowledge gained on the structure-properties relationships of these materials can inspire other research studies on perovskite oxides application as multifunctional materials for the benefit of the environment, society and economy. Catalysis ; Dopant ; Perovskite (structure) ; Copper ; Cobalt ; Materials science ; Chemical engineering ; Strontium ; Chemical composition ; Microstructure ; Doping ; Phase (matter) ; Inorganic chemistry ; Chemistry ; Metallurgy ; Organic chemistry Catalytic Processes in Materials Science ; Electronic and Structural Properties of Oxides ; Magnetic and transport properties of perovskites and related materials
Authors: Tadanori Kurosawa | Yu Yamashita | Yuki Kobayashi | Craig P. Yu | Shohei Kumagai | Tsubasa Mikie | Itaru Osaka | Shun Watanabe | Jun Takeya | Toshihiro Okamoto
Source: Macromolecules (article, 2023-12-14)
Field: Materials Science — Polymers and Plastics

Employment of Alkoxy Sidechains in Semicrystalline Semiconducting Polymers for Ambient-Stable p-Doped Conjugated Polymers Electrical properties arising from doped conducting polymers offer various applications in organic electronics. Recently, sequential chemical doping of semiconducting polymers has attracted attention owing to its capability of being a full solution process, controllable doping level, high electrical properties, and obtaining crystalline conducting polymers. Although the sequentially doped conducting polymers are promising for high electrical conductivities and solid-state physics studies, they show issues of ambient stability due to competitive dedoping. Taking redox reactions with adsorbed water molecules into account as the major dedoping mechanism in p-doped conducting polymers, the fine-tuning of energy levels is a way to improve the ambient stability. In this work, we synthesized two poly(2,5-bis(thiophene-2-yl)thieno[3,2-b]thiophene) regioisomers functionalized with alkoxy side chains to lower the ionization potential by the electron-donating alkoxy groups. After sequential p-doping, the two isomers demonstrated high crystallinities and electrical conductivities on the order of 1 × 102 S cm–1 in air. In addition, the p-doped alkoxy isomers exhibited ionization potentials smaller than the alkyl analogue by ∼0.1 eV, which led to a competition with the redox potential of water. As a result, the stability was remarkably improved, particularly under a high-humidity condition. Therefore, the alkoxy sidechains are promising as a molecular design strategy for conducting polymers with excellent ambient stability. Alkoxy group ; Polymer ; Conjugated system ; Crystallinity ; Doping ; Polymer chemistry ; Materials science ; Organic chemistry ; Chemistry ; Composite material ; Alkyl Conducting polymers and applications ; Organic Electronics and Photovoltaics ; Advanced Sensor and Energy Harvesting Materials
Authors: Diego Sorbelli | Leonardo Belpassi | Paola Belanzoni
Source: Chemical Communications (article, 2023-12-15)
Field: Chemistry — Organic Chemistry

Cooperative small molecule activation by apolar and weakly polar bonds through the lens of a suitable computational protocol Small molecule activation processes are central in chemical research and cooperativity is a valuable tool for the fine-tuning of the efficiency of these reactions. In this contribution, we discuss recent and remarkable examples in which activation processes are mediated by bimetallic compounds featuring apolar or weakly polar metal-metal bonds. Relevant experimental breakthroughs are thoroughly analyzed from a computational perspective. We highlight how the rational and non-trivial application of selected computational approaches not only allows rationalization of the observed reactivities but also inferring of general principles applicable to activation processes, such as the breakdown of the structure-reactivity relationship in carbon dioxide activation in a cooperative framework. We finally provide a simple yet unbiased computational protocol to study these reactions, which can support experimental advances aimed at expanding the range of applications of apolar and weakly polar bonds as catalysts for small molecule activation. Polar ; Chemistry ; Molecule ; Lens (geology) ; Protocol (science) ; Small molecule ; Organic chemistry ; Biochemistry ; Physics ; Optics Cyclopropane Reaction Mechanisms ; Catalytic Cross-Coupling Reactions ; Synthesis and Reactivity of Heterocycles