jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Haifeng Hu | Yi Tian | Peipei Chen | Weiguo Chu
Source: Advanced Materials (article, 2023-11-29)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Perspective on Tailored Nanostructure‐Dominated SPP Effects for SERS Localized surface plasmon resonance (LSPR) excited by an incident light can normally produce strong surface-enhanced Raman scattering (SERS) at the nanogaps among plasmonic nano-objects (so-called hot spots), which is extensively explored. In contrast, surface plasmon polaritons (SPPs) that can be generated by an incident beam via particular structures with a conservation of wave vectors can excite SERS effects as well. SPPs actually play an indispensable role in high-performance SERS devices but receive much less attention. In this perspective, SPPs and their couplings with LSPR for SERS excitations with differing effectiveness through particular plasmonic/dielectric structures/configurations, along with relevant fabrication approaches, are profoundly reviewed and commented on from a unique perspective from in situ to ex situ excitations of SERS enabled by spatiotemporally separated multiple processes of SPPs. Quantitative design of particular configurations/architectures enabling highly efficient and effective multiple processes of SPPs is particularly emphasized as one giant leap toward ultimate full quantitative design of intrinsically high-performance SERS chips and very critical for their batch manufacturability and applications as well. The viewpoints and prospects about innovative SERS devices based on tailored structure-dominated SPPs effects and their coupling with LSPR are presented and discussed. Plasmon ; Materials science ; Nanotechnology ; Raman scattering ; Surface plasmon polariton ; Nanostructure ; Surface plasmon resonance ; Nanophotonics ; Optoelectronics ; Surface plasmon ; Raman spectroscopy ; Nanoparticle ; Optics ; Physics Gold and Silver Nanoparticles Synthesis and Applications ; Plasmonic and Surface Plasmon Research ; Optical Coatings and Gratings
Authors: Idris Ahmed Ja’e | Ahmed Salih | Agusril Syamsir | Teh Hee Min | Zarina Itam | Chiemela Victor Amaechi | Vivi Anggraini | Jayaprakash Sridhar
Source: Developments in the Built Environment (article, 2023-11-06)
Field: Materials Science — Polymers and Plastics

Experimental and predictive evaluation of mechanical properties of kenaf-polypropylene fibre-reinforced concrete using response surface methodology Fibre-reinforced concrete (FRC) is an emerging construction material. However, improving its mechanical properties using sustainable materials remains a concern. In this paper, a combination of experimental and numerical techniques is applied to investigate the combined influence of kenaf (K) and polypropylene fibre (PPF) on the mechanical properties of KPPFRC. The optimal design component of Response Surface Methodology was utilised with combined fibre content between 0.5% and 2%. The results show a general increase in the mechanical properties with KF being the main contributing factor, and corresponding decreases in all responses with the increase in PPF. Nonetheless, the predicted optimal volume fraction of 1.5% consisting of 1.0 kg kF and 0.51 kg PPF gives a 100%, 174% and 100% rise in compressive, split tensile, and flexural strength respectively compared to the control sample. Hence, these optimal proportions of KF and PPF can be utilised as an eco-friendly sustainable material in concrete. Kenaf ; Polypropylene ; Materials science ; Composite material ; Ultimate tensile strength ; Flexural strength ; Response surface methodology ; Volume fraction ; Compressive strength ; Structural engineering ; Fiber ; Computer science ; Engineering Natural Fiber Reinforced Composites ; Innovative concrete reinforcement materials ; Structural Behavior of Reinforced Concrete
Authors: Zhiqiang Zhang | Qingya Song | Yubin Jin | Yashan Feng | Jingan Li | Kun Zhang
Source: Metals (article, 2023-02-13)
Field: Materials Science — Materials Chemistry

Advances in Schiff Base and Its Coating on Metal Biomaterials—A Review In recent years, metal biomaterials have emerged one after another, and have many excellent properties, playing a great role in medicine. However, these coatings cannot meet the medical needs in every aspect. Schiff base is an important organic synthetic reagent and liquid crystal material in organic chemistry. It mainly refers to a class of organic compounds containing imine or azomethine characteristic groups (-RC=N-). It has important anti-tumor, anti-virus, antifungal and antibacterial activities. Based on the excellent properties of Schiff base, the coatings made of Schiff base can improve the bioactivity of materials, which have a good development prospect in medicine. In this paper, the preparation methods and properties of Schiff base and many advantages of Schiff base coatings are reviewed. The research on the modification of coatings or functional membranes by Schiff base and Schiff base reaction, as well as the extensive application of special Schiff base coatings in many fields such as anti-corrosion, antibacterial, flame retardant, etc., are carried out. Suggestions for further research on Schiff base coatings on metal biomaterials are put forward. Schiff base ; Imine ; Materials science ; Coating ; Antifungal ; Reagent ; Base metal ; Nanotechnology ; Combinatorial chemistry ; Chemistry ; Organic chemistry ; Polymer chemistry ; Metallurgy ; Catalysis ; Medicine Corrosion Behavior and Inhibition ; Metal-Organic Frameworks: Synthesis and Applications ; Metal complexes synthesis and properties
Authors: Changyi Liu | Kexin Peng | Yilun Wu | Fanfan Fu
Source: Smart Medicine (review, 2023-10-07)
Field: Materials Science — Surfaces, Coatings and Films

Functional adhesive hydrogels for biological interfaces Hydrogel adhesives are extensively employed in biological interfaces such as epidermal flexible electronics, tissue engineering, and implanted device. The development of functional hydrogel adhesives is a critical, yet challenging task since combining two or more attributes that seem incompatible into one adhesive hydrogel without sacrificing the hydrogel's pristine capabilities. In this Review, we highlight current developments in the fabrication of functional adhesive hydrogels, which are suitable for a variety of application scenarios, particularly those that occur underwater or on tissue/organ surface conditions. The design strategies for a multifunctional adhesive hydrogel with desirable properties including underwater adhesion, self-healing, good biocompatibility, electrical conductivity, and anti-swelling are discussed comprehensively. We then discuss the challenges faced by adhesive hydrogels, as well as their potential applications in biological interfaces. Adhesive hydrogels are the star building blocks of bio-interface materials for individualized healthcare and other bioengineering areas. Self-healing hydrogels ; Adhesive ; Materials science ; Biocompatibility ; Nanotechnology ; Adhesion ; Tissue engineering ; Biomedical engineering ; Composite material ; Engineering ; Polymer chemistry Polymer Surface Interaction Studies ; Advanced Sensor and Energy Harvesting Materials ; Hydrogels: synthesis, properties, applications
Authors: Runsheng Zheng | Manuel Matzinger | Rupert L. Mayer | Alec C. Valenta | Xuefei Sun | Karl Mechtler
Source: Analytical Chemistry (article, 2023-12-13)
Field: Chemistry — Spectroscopy

A High-Sensitivity Low-Nanoflow LC-MS Configuration for High-Throughput Sample-Limited Proteomics This work demonstrates the utility of high-throughput nanoLC-MS and label-free quantification (LFQ) for sample-limited bottom-up proteomics analysis, including single-cell proteomics (SCP). Conditions were optimized on a 50 μm internal diameter (I.D.) column operated at 100 nL/min in the direct injection workflow to balance method sensitivity and sample throughput from 24 to 72 samples/day. Multiple data acquisition strategies were also evaluated for proteome coverage, including data-dependent acquisition (DDA), wide-window acquisition (WWA), and wide-window data-independent acquisition (WW-DIA). Analyzing 250 pg HeLa digest with a 10-min LC gradient (72 samples/day) provided >900, >1,800, and >3,000 protein group identifications for DDA, WWA, and WW-DIA, respectively. Total method cycle time was further reduced from 20 to 14.4 min (100 samples/day) by employing a trap-and-elute workflow, enabling 70% mass spectrometer utilization. The method was applied to library-free DIA analysis of single-cell samples, yielding >1,700 protein groups identified. In conclusion, this study provides a high-sensitivity, high-throughput nanoLC-MS configuration for sample-limited proteomics. Chemistry ; Proteomics ; Mass spectrometry ; Chromatography ; Throughput ; Proteome ; HeLa ; Sample (material) ; Analytical Chemistry (journal) ; Cell ; Computer science ; Biochemistry Mass Spectrometry Techniques and Applications ; Advanced Proteomics Techniques and Applications ; Biosensors and Analytical Detection
Authors: Arianna Quintavalla | Davide Carboni | Marco Lombardo
Source: Molecules (review, 2023-02-27)
Field: Chemistry — Organic Chemistry

Recent Advances in Asymmetric Synthesis of Pyrrolidine-Based Organocatalysts and Their Application: A 15-Year Update In 1971, chemists from Hoffmann-La Roche and Schering AG independently discovered a new asymmetric intramolecular aldol reaction catalyzed by the natural amino acid proline, a transformation now known as the Hajos-Parrish-Eder-Sauer-Wiechert reaction. These remarkable results remained forgotten until List and Barbas reported in 2000 that L-proline was also able to catalyze intermolecular aldol reactions with non-negligible enantioselectivities. In the same year, MacMillan reported on asymmetric Diels-Alder cycloadditions which were efficiently catalyzed by imidazolidinones deriving from natural amino acids. These two seminal reports marked the birth of modern asymmetric organocatalysis. A further important breakthrough in this field happened in 2005, when Jørgensen and Hayashi independently proposed the use of diarylprolinol silyl ethers for the asymmetric functionalization of aldehydes. During the last 20 years, asymmetric organocatalysis has emerged as a very powerful tool for the facile construction of complex molecular architectures. Along the way, a deeper knowledge of organocatalytic reaction mechanisms has been acquired, allowing for the fine-tuning of the structures of privileged catalysts or proposing completely new molecular entities that are able to efficiently catalyze these transformations. This review highlights the most recent advances in the asymmetric synthesis of organocatalysts deriving from or related to proline, starting from 2008. Organocatalysis ; Aldol reaction ; Enantioselective synthesis ; Pyrrolidine ; Chemistry ; Intramolecular force ; Stereoselectivity ; Catalysis ; Intermolecular force ; Proline ; Combinatorial chemistry ; Amino acid ; Stereochemistry ; Organic chemistry ; Molecule Asymmetric Synthesis and Catalysis ; Microbial Natural Products and Biosynthesis ; Synthetic Organic Chemistry Methods
Authors: Wei Luo | Syeda Aimen Abbasi | Shaodi Zhu | Xuejin Li | Ho‐Pui Ho | Wu Yuan
Source: Nanophotonics (article, 2023-03-22)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Electrically switchable and tunable infrared light modulator based on functional graphene metasurface Graphene is emerging as an ideal material for new-generation optoelectronic devices. In this paper, a novel graphene metasurface-based electrically switchable and tunable infrared light modulator has been proposed and theoretically studied. The functional modulator comprises a monolayer graphene sheet sandwiched in a Fabry-Perot (FP) like nanostructure consisting of a metal reflector, a dielectric spacer, and an ellipse patterned anisotropy antenna layer. As a result of the photon localization effect of the guided-mode resonance (GMR) in the FP structure, the graphene electroabsorption can be significantly enhanced to enable a high-performance light modulator. By fine-tuning the Fermi energy (<i>E</i> <sub>f</sub>) of graphene via controlling its bias-gate voltage, the proposed modulator can switch between a perfect absorber and a reflective polarization converter of high conversion efficiency (i.e., >90%) at 1550 nm. The conversion mechanism and the geometric dependences of the infrared light modulator have been investigated. We further demonstrated the tunability of the highly-efficient polarization converter over a broad spectrum by adjusting the real dispersion of <i>E</i> <sub>f</sub>. Our design concept provides an effective strategy for customizing novel optoelectronic devices by combining an electrically-tunable 2D material with a functional metasurface. Graphene ; Nanomaterials ; Infrared ; Materials science ; Optoelectronics ; Nanotechnology ; Modulation (music) ; Optics ; Physics Metamaterials and Metasurfaces Applications ; Plasmonic and Surface Plasmon Research ; Optical Wireless Communication Technologies
Authors: Bruce C. Gates | Alexander Katz | Jingyue Liu
Source: Precision Chemistry (review, 2023-02-15)
Field: Materials Science — Materials Chemistry

Nested Metal Catalysts: Metal Atoms and Clusters Stabilized by Confinement with Accessibility on Supports Supported catalysts that are important in technology prominently include atomically dispersed metals and metal clusters. When the metals are noble, they are typically unstable-susceptible to sintering-especially under reducing conditions. Embedding the metals in supports such as organic polymers, metal oxides, and zeolites confers stability on the metals but at the cost of catalytic activity associated with the lack of accessibility of metal bonding sites to reactants. An approach to stabilizing noble metal catalysts while maintaining their accessibility involves anchoring them in molecular-scale nests that are in or on supports. The nests include zeolite pore mouths, zeolite surface cups (half-cages), raft-like islands of oxophilic metals bonded to metal oxide supports, clusters of non-noble metals (e.g., hosting noble metals as single-atom alloys), and nanoscale metal oxide islands that selectively bond to the catalytic metals, isolating them from the support. These examples illustrate a trend toward precision in the synthesis of solid catalysts, and the latter two classes of nested catalysts offer realistic prospects for economical large-scale application. Catalysis ; Noble metal ; Metal ; Materials science ; Zeolite ; Oxide ; Nanoscopic scale ; Nanotechnology ; Rhodium ; Chemical engineering ; Inorganic chemistry ; Chemistry ; Metallurgy ; Organic chemistry Catalytic Processes in Materials Science ; Electrocatalysts for Energy Conversion ; Nanomaterials for catalytic reactions
Authors: Yuchen Hu | Xin Zhang | Rebecca Shu Hui Khoo | Christian Fiankor | Xu Zhang | Jian Zhang
Source: Journal of the American Chemical Society (article, 2023-06-15)
Field: Chemistry — Inorganic Chemistry

Stepwise Assembly of Quinary Multivariate Metal–Organic Frameworks via Diversified Linker Exchange and Installation Multivariate MOFs (MTV-MOFs) constructed from multiple components with atomistic precision hold the promise for many fascinating developments in both fundamental sciences and applications. Sequential linker installation can be an effective method to introduce different functional linkers into an MOF that contains coordinatively unsaturated metal sites. However, in many cases, these linkers must be installed according to a specific sequence and the complete synthetic flexibility and freedom is yet to be realized. Here, we rationally decreased the size of the primary ligand used in NPF-300, a Zr-MOF with <b>scu</b> topology (NPF = Nebraska Porous Framework), and synthesized its isostructure, NPF-320. NPF-320 exhibits optimized pocket sizes which allow for the post-synthetic installation of three secondary linkers in all six permuted sequences via both linker exchange and installation, forming a final quinary MTV-MOF via single-crystal-to-single-crystal transformation. With the functionalization of the linkers from the quinary MOF system, one will be able to construct MTV-MOFs not only with variable porosity but also with unprecedented complexity and encoded synthetic sequence information. The utility of sequential linker installation was further demonstrated by the construction of a donor-acceptor pair-based energy transfer system. Quinary ; Linker ; Chemistry ; Sequence (biology) ; Metal-organic framework ; Ligand (biochemistry) ; Nanotechnology ; Combinatorial chemistry ; Topology (electrical circuits) ; Computer science ; Materials science ; Organic chemistry ; Mathematics Metal-Organic Frameworks: Synthesis and Applications ; Magnetism in coordination complexes ; Machine Learning in Materials Science
Authors: Manjur O. Akram | John R. Tidwell | Jason L. Dutton | Caleb D. Martin
Source: Angewandte Chemie International Edition (article, 2023-06-20)
Field: Chemistry — Organic Chemistry

Bis(1‐Methyl‐ <i>ortho</i> ‐Carboranyl)Borane The Lewis superacid, bis(1-methyl-ortho-carboranyl)borane, is rapidly accessed in two steps. It is a very effective hydroboration reagent capable of B-H addition to alkenes, alkynes, and cyclopropanes. To date, this is the first identified Lewis superacidic secondary borane and most reactive neutral hydroboration reagent. Hydroboration ; Borane ; Superacid ; Chemistry ; Reagent ; Lewis acids and bases ; Boranes ; Organic chemistry ; Medicinal chemistry ; Catalysis ; Boron Organoboron and organosilicon chemistry ; Boron Compounds in Chemistry ; Chemical Synthesis and Analysis
Authors: Shikai Xian | Junjie Peng | Haardik Pandey | W. David Graham | Yu Liang | Hao Wang | Kui Tan | Timo Thonhauser | Jing Li
Source: Journal of Materials Chemistry A (article, 2023-01-01)
Field: Chemistry — Inorganic Chemistry

Simultaneous removal of C<sub>2</sub>H<sub>2</sub> and C<sub>2</sub>H<sub>6</sub> for C<sub>2</sub>H<sub>4</sub> purification by robust MOFs featuring a high density of heteroatoms Simultaneous removal of C 2 H 6 and C 2 H 2 from C 2 H 4 streams by MOFs with high stability and high density of heteroatoms. Heteroatom ; Chemistry ; Analytical Chemistry (journal) ; Crystallography ; Materials science ; Chromatography ; Organic chemistry ; Ring (chemistry) Metal-Organic Frameworks: Synthesis and Applications ; Catalytic Processes in Materials Science ; Gas Sensing Nanomaterials and Sensors
Authors: Linyang Wang | Jiamin Sun | Maojun Deng | Chunhui Liu | Servet Ataberk Cayan | Korneel Molkens | Pieter Geiregat | Rino Morent | Nathalie De Geyter | Jeet Chakraborty | Pascal Van Der Voort
Source: Catalysis Science & Technology (article, 2023-01-01)
Field: Materials Science — Materials Chemistry

Understanding photocatalytic hydrogen peroxide production in pure water for benzothiadiazole-based covalent organic frameworks In this study, we introduce two benzothiadiazole-based COFs with tunable electronic structures and electron affinities for photocatalytic H 2 O 2 production. Photocatalysis ; Hydrogen peroxide ; Covalent bond ; Catalysis ; Chemistry ; Photochemistry ; Hydrogen production ; Nanotechnology ; Materials science ; Combinatorial chemistry ; Organic chemistry Covalent Organic Framework Applications ; Advanced Photocatalysis Techniques ; Caching and Content Delivery
Authors: L. Ouayloul | M. El Doukkali | Mingyang Jiao | Franck Dumeignil | I. Agirrezabal-Telleria
Source: Green Chemistry (article, 2023-01-01)
Field: Chemistry — Inorganic Chemistry

New mechanistic insights into the role of water in the dehydration of ethanol into ethylene over ZSM-5 catalysts at low temperature We highlight the role of OH-treated weakly acidic ZSM-5 in the ethanol-to-ethylene at low temperature. Ethylene forms via (i) primary dimer from ethanol on Brønsted sites, followed by diethyl ether cracking on Lewis sites, and (ii) secondary cleavage of C–OH in ethanol over Brønsted sites. Ethylene ; Dehydration ; Chemistry ; Ethanol ; Catalysis ; Diethyl ether ; ZSM-5 ; Brønsted–Lowry acid–base theory ; Dimer ; Cleavage (geology) ; Ether ; Organic chemistry ; Zeolite ; Materials science ; Biochemistry Zeolite Catalysis and Synthesis ; Catalysis and Hydrodesulfurization Studies ; Catalytic Processes in Materials Science
Authors: David Egea‐Arrebola | F. Wieland Goetzke | Stephen P. Fletcher
Source: Angewandte Chemie International Edition (article, 2023-02-02)
Field: Chemistry — Organic Chemistry

Rhodium‐Catalyzed Asymmetric Arylation of Cyclobutenone Ketals Complex cyclobutanes are important motifs in both bioactive molecules and natural products, yet their enantioselective preparation has not been widely explored. In this work, we describe rhodium-catalyzed enantioselective additions of aryl and vinyl boronic acids to cyclobutenone ketals. This transformation involves enantioselective carbometalation to give cyclobutyl-rhodium intermediates, followed by β-oxygen elimination to afford enantioenriched enol ethers. Overall, this addition serves as a surrogate for Rh-catalyzed 1,4-additions to cyclobutenone. Rhodium ; Enantioselective synthesis ; Chemistry ; Catalysis ; Cyclobutanes ; Aryl ; Enol ; Organic chemistry ; Combinatorial chemistry ; Stereoisomerism ; Cycloaddition Asymmetric Synthesis and Catalysis ; Asymmetric Hydrogenation and Catalysis ; Cyclopropane Reaction Mechanisms
Authors: Matthieu Bourdon | Jan J. Łyczakowski | Rosalie Cresswell | Sam Amsbury | Francisco Vilaplana | Marie-Joo Le Guen | Nadège Follain | Raymond Wightman | Chang Su | Fulgencio Alatorre‐Cobos | Maximilian Ritter | Aleksandra Liszka | Oliver M. Terrett | Shri Ram Yadav | Anne Vatén | Kaisa Nieminen | Gugan Eswaran | Juan Alonso‐Serra | Karin H. Müller | Dinu Iuga | Pál Miskolczi | Lothar Kalmbach | Sofía Otero | Ari Pekka Mähönen | Rishikesh P. Bhalerao | Vincent Bulone | Shawn D. Mansfield | Stefan Hill | Ingo Burgert | Johnny Beaugrand | Yoselin Benitez‐Alfonso | R. Dupree | Paul Dupree | Ykä Helariutta
Source: Nature Plants (article, 2023-09-04)
Field: Materials Science — Biomaterials

Ectopic callose deposition into woody biomass modulates the nano-architecture of macrofibrils Plant biomass plays an increasingly important role in the circular bioeconomy, replacing non-renewable fossil resources. Genetic engineering of this lignocellulosic biomass could benefit biorefinery transformation chains by lowering economic and technological barriers to industrial processing. However, previous efforts have mostly targeted the major constituents of woody biomass: cellulose, hemicellulose and lignin. Here we report the engineering of wood structure through the introduction of callose, a polysaccharide novel to most secondary cell walls. Our multiscale analysis of genetically engineered poplar trees shows that callose deposition modulates cell wall porosity, water and lignin contents and increases the lignin-cellulose distance, ultimately resulting in substantially decreased biomass recalcitrance. We provide a model of the wood cell wall nano-architecture engineered to accommodate the hydrated callose inclusions. Ectopic polymer introduction into biomass manifests in new physico-chemical properties and offers new avenues when considering lignocellulose engineering. Lignin ; Biomass (ecology) ; Biorefinery ; Hemicellulose ; Callose ; Cellulose ; Lignocellulosic biomass ; Cell wall ; Deposition (geology) ; Pulp and paper industry ; Secondary cell wall ; Botany ; Materials science ; Chemistry ; Environmental science ; Raw material ; Agronomy ; Biology ; Organic chemistry ; Engineering Advanced Cellulose Research Studies ; Polysaccharides and Plant Cell Walls ; Lignin and Wood Chemistry