jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Hongyu Zuo | Baokang Lyu | Jiaao Yao | Wenhua Long | Yu Shi | Xinghao Li | Huawei Hu | Arne Thomas | Jiayin Yuan | Bo Hou | Weiyi Zhang | Yaozu Liao
Source: Advanced Materials (article, 2024-01-16)
Field: Materials Science — Materials Chemistry

Bioinspired Gradient Covalent Organic Framework Membranes for Ultrafast and Asymmetric Solvent Transport Gradients play a pivotal role in membrane technologies, e.g., osmotic energy conversion, desalination, biomimetic actuation, selective separation, and more. In these applications, the compositional gradients are of great relevance for successful function implementation, ranging from solvent separation to smart devices; However, the construction of functional gradient in membranes is still challenging both in scale and directions. Inspired by the specific function-related, graded porous structures in glomerular filtration membranes, a general approach for constructing gradient covalent organic framework membranes (GCOMx) applying poly (ionic liquid)s (PILs) as template is reported here. With graded distribution of highly porous covalent organic framework (COF) crystals along the membrane, GCOMx exhibts an unprecedented asymmetric solvent transport when applying different membrane sides as the solvent feed surface during filtration, leading to a much-enhanced flux (10-18 times) of the "large-to-small" pore flow comparing to the reverse direction, verified by hydromechanical theoretical calculations. Upon systematic experiments, GCOMx achieves superior permeance in nonpolar (hexane ≈260.45 LMH bar<sup>-1</sup>) and polar (methanol ≈175.93 LMH bar<sup>-1</sup>) solvents, together with narrow molecular weight cut-off (MWCO, 472 g mol<sup>-1</sup>) and molecular weight retention onset (MWRO, <182 g mol<sup>-1</sup>). Interestingly, GCOMx shows significant filtration performance in simulated kidney dialysis, revealing great potential of GCOMx in bionic applications. Materials science ; Membrane ; Covalent bond ; Ultrashort pulse ; Organic solvent ; Solvent ; Nanotechnology ; Metal-organic framework ; Chemical engineering ; Chemical physics ; Organic chemistry ; Chemistry ; Optics ; Laser Covalent Organic Framework Applications ; Membrane Separation and Gas Transport ; Membrane Separation Technologies
Authors: Anbazhagan Thirumalai | Koyeli Girigoswami | Alex Daniel Prabhu | P. Durgadevi | Venkatakrishnan Kiran | Agnishwar Girigoswami
Source: Pharmaceutics (article, 2024-10-26)
Field: Materials Science — Materials Chemistry

8-Anilino-1-naphthalenesulfonate-Conjugated Carbon-Coated Ferrite Nanodots for Fluoromagnetic Imaging, Smart Drug Delivery, and Biomolecular Sensing In conclusion, ANS-MnFe@C holds ease of fabrication, good biocompatibility, as assessed in A375 cells, and an effective pH-sensitive doxorubicin release profile to establish anticancer activity in lung cancer cell line (A549), highlighting its potential as an affordable therapeutic agent for multimodal imaging, drug delivery, and protein sensing. Nanodot ; Drug delivery ; Conjugated system ; Nanotechnology ; Drug ; Materials science ; Chemistry ; Pharmacology ; Medicine Carbon and Quantum Dots Applications ; Supramolecular Self-Assembly in Materials ; Luminescence and Fluorescent Materials
Authors: Jinwu Wang | Syed Comail Abbas | Ling Li | Colleen C. Walker | Yonghao Ni | Zhiyong Cai
Source: Membranes (review, 2024-06-30)
Field: Materials Science — Biomaterials

Cellulose Membranes: Synthesis and Applications for Water and Gas Separation and Purification Membranes are a selective barrier that allows certain species (molecules and ions) to pass through while blocking others. Some rely on size exclusion, where larger molecules get stuck while smaller ones permeate through. Others use differences in charge or polarity to attract and repel specific species. Membranes can purify air and water by allowing only air and water molecules to pass through, while preventing contaminants such as microorganisms and particles, or to separate a target gas or vapor, such as H<sub>2</sub> and CO<sub>2</sub>, from other gases. The higher the flux and selectivity, the better a material is for membranes. The desirable performance can be tuned through material type (polymers, ceramics, and biobased materials), microstructure (porosity and tortuosity), and surface chemistry. Most membranes are made from plastic from petroleum-based resources, contributing to global climate change and plastic pollution. Cellulose can be an alternative sustainable resource for making renewable membranes. Cellulose exists in plant cell walls as natural fibers, which can be broken down into smaller components such as cellulose fibrils, nanofibrils, nanocrystals, and cellulose macromolecules through mechanical and chemical processing. Membranes made from reassembling these particles and molecules have variable pore architecture, porosity, and separation properties and, therefore, have a wide range of applications in nano-, micro-, and ultrafiltration and forward osmosis. Despite their advantages, cellulose membranes face some challenges. Improving the selectivity of membranes for specific molecules often comes at the expense of permeability. The stability of cellulose membranes in harsh environments or under continuous operation needs further improvement. Research is ongoing to address these challenges and develop advanced cellulose membranes with enhanced performance. This article reviews the microstructures, fabrication methods, and potential applications of cellulose membranes, providing some critical insights into processing-structure-property relationships for current state-of-the-art cellulosic membranes that could be used to improve their performance. Membrane ; Cellulose ; Chemical engineering ; Materials science ; Nanocellulose ; Membrane technology ; Polymer ; Porosity ; Gas separation ; Permeation ; Chemistry ; Composite material Advanced Cellulose Research Studies ; Membrane Separation Technologies ; Membrane Separation and Gas Transport
Authors: Md Sohag Hossain | Md. Humayun Kabir | Md. Aftab Ali Shaikh | Md. Anamul Haque | Sabina Yasmin
Source: RSC Advances (article, 2024-01-01)
Field: Chemistry — Organic Chemistry

Ultrafast and simultaneous removal of four tetracyclines from aqueous solutions using waste material-derived graphene oxide-supported cobalt–iron magnetic nanocomposites In this work, a graphene oxide-supported cobalt-iron oxide (GO/Co-Fe) magnetic nanocomposite was successfully synthesized using waste dry cells for the efficient and simultaneous removal of tetracycline (TC), chlortetracycline (CTC), oxytetracycline (OTC), and doxycycline (DTC) from aqueous solutions. The GO/Co-Fe nanocomposite was thoroughly characterized using Fourier transform infrared spectroscopy, vibrating sample magnetometry, X-ray diffraction, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and zeta potential analysis. This multi-faceted characterization provided clean insights into the composition and properties of the synthesized nanocomposite. The adsorption of tetracyclines (TCs) was systematically investigated by assessing the influence of critical factors, such as adsorbent dosage, contact duration, initial pH of the solution, initial concentration, and temperature. The GO/Co-Fe adsorbent showed high removal efficiencies of 94.1% TC, 94.32% CTC, 94.22% OTC, and 96.94% DTC within 30 s contact period. The maximum removal efficiency of TCs was found at a low adsorbent dose of 0.15 g L<sup>-1</sup>. Notably, this superior removal efficiency was achieved at neutral pH and room temperature, demonstrating the adsorbent's efficacy under environmentally viable conditions. The kinetic studies demonstrated that the adsorption process was fitted satisfactorily with the pseudo-second-order model. Additionally, the adsorption behaviour of TCs on the GO/Co-Fe adsorbent was assessed by isotherm models, Langmuir and Freundlich. The experimental data followed the Langmuir isotherm, signifying a monolayer adsorption mechanism on the surface of the adsorbent. The adsorption capacities (<i>q</i><sub>m</sub>) of GO/Co-Fe for TC, CTC, OTC and DTC were determined to be 64.10, 71.43, 72.46 and 99.01 mg g<sup>-1</sup>, respectively. Importantly, the GO/Co-Fe adsorbent showed reusability capabilities. The super magnetic properties of GO/Co-Fe made it easy to use for several cycles. These results clearly establish GO/Co-Fe as an exceptionally effective adsorbent for the removal of TCs from aqueous systems, highlighting its great potentiality in water treatment applications. Graphene ; Nanocomposite ; Aqueous solution ; Cobalt ; Ultrashort pulse ; Oxide ; Materials science ; Iron oxide ; Chemical engineering ; Nanotechnology ; Inorganic chemistry ; Chemistry ; Metallurgy ; Organic chemistry Nanomaterials for catalytic reactions ; Graphene and Nanomaterials Applications ; Adsorption and biosorption for pollutant removal
Authors: Patrick Damacet | Karen Hannouche | Abdelaziz Gouda | Mohamad Hmadeh
Source: ACS Applied Materials & Interfaces (review, 2024-01-17)
Field: Chemistry — Inorganic Chemistry

Controlled Growth of Highly Defected Zirconium–Metal–Organic Frameworks via a Reaction–Diffusion System for Water Remediation The relentless growth of metal-organic framework (MOF) chemistry is paralleled by the persistent urge to control the MOFs physical and chemical properties. While this control is mostly achieved by solvothermal syntheses, room temperature procedures stand out as more convenient and sustainable pathways for the production of MOF materials. Herein, a novel approach to control the crystal size and defect numbers of a dihydroxy-functionalized zirconium-based metal-organic framework (UiO-66(OH)<sub>2</sub>) at room temperature is reported. Through a reaction-diffusion method in a 1D system, zirconium salt was diffused into an agar gel matrix containing the organic linker to form nanocrystals of UiO-66(OH)<sub>2</sub> with tailored structural features that include crystal size distribution, surface area, and defect number. By variation of the synthesis parameters of the system, hierarchical MOF nanocrystals with an average size ranging from 30 nm up to 270 nm and surface areas between 201 and 500 m<sup>2</sup> g<sup>-1</sup> were obtained in a one-pot synthetic route. To stress the importance of crystal size, morphology, and structural defects on the adsorption properties of UiO-66(OH)<sub>2</sub>, the adsorption capacity of the MOF toward methylene blue dye was tested with the largest and most defected crystals achieving the best performance of 202 mg/g. The distinctive structural characteristics including the hierarchical micromesoporous frameworks, the nanosized particles, and the highly defective crystals obtained by our synthesis procedure are deemed challenging through the conventional synthesis methods. This work paves the way for engineering MOF crystals with tunable physical and chemical properties, using a green synthesis procedure, for their advantageous use in many desirable applications. Materials science ; Metal-organic framework ; Zirconium ; Chemical engineering ; Adsorption ; Nanotechnology ; Nanocrystal ; Nanoparticle ; Solvothermal synthesis ; Crystal (programming language) ; Organic chemistry ; Metallurgy ; Chemistry Metal-Organic Frameworks: Synthesis and Applications ; Covalent Organic Framework Applications ; MXene and MAX Phase Materials
Authors: Chaoyu Li | Zhong‐Qun Tian
Source: Chemical Society Reviews (review, 2024-01-01)
Field: Chemistry — Electrochemistry

Sixty years of electrochemical optical spectroscopy: a retrospective Sixty years ago, Reddy, Devanatan, and Bockris performed the first <i>in situ</i> electrochemical ellipsometry experiment, which ushered in a new era in the study of electrochemistry, using optical spectroscopy. After six decades of development, electrochemical optical spectroscopy, particularly electrochemical vibrational spectroscopy, has advanced from a phase of immaturity with few methods and limited applications to a phase of maturity with excellent substrate generality and significantly improved resolutions. Here, we divide the development of electrochemical optical spectroscopy into four phases, focusing on the proof-of-concept of different electrochemical optical spectroscopy studies, the emergence of plasmonic enhancement-based electrochemical optical spectroscopic (in particular vibrational spectroscopic) methods, the realization of electrochemical vibrational spectroscopy on well-defined surfaces, and the efforts to achieve <i>operando</i> spectroelectrochemical applications. Finally, we discuss the future development trend of electrochemical optical spectroscopy, as well as examples of new methodology and research paradigms for <i>operando</i> spectroelectrochemistry. Electrochemistry ; Spectroscopy ; Phase (matter) ; Materials science ; Analytical Chemistry (journal) ; Nanotechnology ; Chemistry ; Electrode ; Physics ; Physical chemistry ; Environmental chemistry ; Organic chemistry Electrochemical Analysis and Applications ; Analytical Chemistry and Sensors ; Spectroscopy and Quantum Chemical Studies
Authors: Johanna Templ | Michael Schnürch
Source: Chemistry - A European Journal (review, 2024-02-14)
Field: Chemistry — Inorganic Chemistry

A Guide for Mono‐Selective N‐Methylation, N‐Ethylation, and N‐n‐Propylation of Primary Amines, Amides, and Sulfonamides and Their Applicability in Late‐Stage Modification This review provides a comprehensive overview of mono-alkylation methodologies targeting crucial nitrogen moieties - amines, amides, and sulfonamides - found in organic building blocks and pharmaceuticals. Emphasizing the intersection of chemical precision with drug discovery, the central challenge addressed is achieving one-pot mono-selective short-chain N-alkylations (methylations, ethylations, and n-propylations), preventing undesired overalkylation. Additionally, sustainable, safe, and benign alternatives to traditional alkylating agents, including alcohols, carbon dioxide, carboxylic acids, nitriles, alkyl phosphates, quaternary ammonium salts, and alkyl carbonates, are explored. This review, categorized by the nature of the alkylating agent, aids researchers in selecting suitable methods for mono-selective N-alkylation. Methylation ; Primary (astronomy) ; Stage (stratigraphy) ; Chemistry ; Organic chemistry ; Combinatorial chemistry ; Medicinal chemistry ; Biology ; Biochemistry ; Gene ; Physics Asymmetric Hydrogenation and Catalysis ; Chemical Synthesis and Analysis ; Carbon dioxide utilization in catalysis
Authors: Guiyu Peng | Jintang Zhou | Junru Yao | Lu Lu | Yijie Liu | Kexin Zou | Jiaqi Tao | Zhengjun Yao
Source: Carbon (article, 2024-08-22)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Polymerization-induced aramid nanofiber in-situ loaded poly-pyrrole for construction of ultra-strong microwave absorption aerogel Aerogel ; Aramid ; Materials science ; In situ polymerization ; Nanofiber ; Microwave ; Polymerization ; In situ ; Absorption (acoustics) ; Composite material ; Chemical engineering ; Polymer ; Chemistry ; Organic chemistry ; Fiber Electromagnetic wave absorption materials ; Supercapacitor Materials and Fabrication ; Carbon and Quantum Dots Applications
Authors: Shiva Singh | Shakshi Bhardwaj | Nitesh Choudhary | Rohan Patgiri | Yoshikuni Teramoto | Pradip K. Maji
Source: ACS Applied Materials & Interfaces (review, 2024-08-05)
Field: Materials Science — Biomaterials

Stimuli-Responsive Chiral Cellulose Nanocrystals Based Self-Assemblies for Security Measures to Prevent Counterfeiting: A Review The proliferation of misleading information and counterfeit products in conjunction with technical progress presents substantial worldwide issues. To address the issue of counterfeiting, many tactics, such as the use of luminous anticounterfeiting systems, have been investigated. Nevertheless, traditional fluorescent compounds have a restricted effectiveness. Cellulose nanocrystals (CNCs), known for their renewable nature and outstanding qualities, present an excellent opportunity to develop intelligent, optically active materials formed due to their self-assembly behavior and stimuli response. CNCs and their derivatives-based self-assemblies allow for the creation of adaptable luminous materials that may be used to prevent counterfeiting. These materials integrate the photophysical characteristics of optically active components due to their stimuli-responsive behavior, enabling their use in fibers, labels, films, hydrogels, and inks. Despite substantial attention, existing materials frequently fall short of practical criteria due to limited knowledge and poor performance comparisons. This review aims to provide information on the latest developments in anticounterfeit materials based on stimuli-responsive CNCs and derivatives. It also includes the scope of artificial intelligence (AI) in the near future. It will emphasize the potential uses of these materials and encourage future investigation in this rapidly growing area of study. Materials science ; Nanotechnology ; Scope (computer science) ; Counterfeit ; Aggregation-induced emission ; Biochemical engineering ; Computer science ; Fluorescence ; Engineering Advanced Cellulose Research Studies ; Electrohydrodynamics and Fluid Dynamics ; Nanocomposite Films for Food Packaging
Authors: Zijing Zhang | Nicolas Jacob | Shilpa Bhatia | Philipp Boos | Xinran Chen | Joshua C. DeMuth | Antonis M. Messinis | Becky Bongsuiru Jei | João C. A. Oliveira | Aleksa Radović | Michael L. Neidig | Joanna Wencel‐Delord | Lutz Ackermann
Source: Nature Communications (article, 2024-04-25)
Field: Chemistry — Organic Chemistry

Iron-catalyzed stereoselective C–H alkylation for simultaneous construction of C–N axial and C-central chirality The assembly of chiral molecules with multiple stereogenic elements is challenging, and, despite of indisputable advances, largely limited to toxic, cost-intensive and precious metal catalysts. In sharp contrast, we herein disclose a versatile C-H alkylation using a non-toxic, low-cost iron catalyst for the synthesis of substituted indoles with two chiral elements. The key for achieving excellent diastereo- and enantioselectivity was substitution on a chiral N-heterocyclic carbene ligand providing steric hindrance and extra represented by noncovalent interaction for the concomitant generation of C-N axial chirality and C-stereogenic center. Experimental and computational mechanistic studies have unraveled the origin of the catalytic efficacy and stereoselectivity. Stereoselectivity ; Chirality (physics) ; Alkylation ; Catalysis ; Stereochemistry ; Chemistry ; Physics ; Organic chemistry ; Chiral symmetry ; Nuclear physics Catalytic C–H Functionalization Methods ; Axial and Atropisomeric Chirality Synthesis ; Asymmetric Hydrogenation and Catalysis
Authors: Jinlei Zhang | Jiayong Zhang | Yaping Qi | Shuainan Gong | Hang Xu | Zhenqi Liu | Ran Zhang | Mohammad A. Sadi | Demid Sychev | Run Zhao | Hongbin Yang | Zhenping Wu | Dapeng Cui | Lin Wang | Chunlan Ma | Xiaoshan Wu | Ju Gao | Yong P. Chen | Xinran Wang | Yu‐Cheng Jiang
Source: Nature Communications (article, 2024-09-02)
Field: Materials Science — Materials Chemistry

Room-temperature ferroelectric, piezoelectric and resistive switching behaviors of single-element Te nanowires Ferroelectrics are essential in memory devices for multi-bit storage and high-density integration. Ferroelectricity mainly exists in compounds but rare in single-element materials due to their lack of spontaneous polarization in the latter. However, we report a room-temperature ferroelectricity in quasi-one-dimensional Te nanowires. Piezoelectric characteristics, ferroelectric loops and domain reversals are clearly observed. We attribute the ferroelectricity to the ion displacement created by the interlayer interaction between lone-pair electrons. Ferroelectric polarization can induce a strong field effect on the transport along the Te chain, giving rise to a self-gated ferroelectric field-effect transistor. By utilizing ferroelectric Te nanowire as channel, the device exhibits high mobility (~220 cm<sup>2</sup>·V<sup>-1</sup>·s<sup>-1</sup>), continuous-variable resistive states can be observed with long-term retention (>10<sup>5</sup> s), fast speed (<20 ns) and high-density storage (>1.92 TB/cm<sup>2</sup>). Our work provides opportunities for single-element ferroelectrics and advances practical applications such as ultrahigh-density data storage and computing-in-memory devices. Nanowire ; Ferroelectricity ; Materials science ; Piezoelectricity ; Resistive touchscreen ; Optoelectronics ; Nanotechnology ; Condensed matter physics ; Composite material ; Electrical engineering ; Physics 2D Materials and Applications ; Advanced Thermoelectric Materials and Devices ; Solid-state spectroscopy and crystallography
Authors: Jyoti Singh | Ankit Kumar | Amit Singh Nayal | Sagar Vikal | Gyanika Shukla | Amardeep Singh | Anupma Singh | Sakshi Goswami | Ashwani Kumar | Yogendra K. Gautam | Yeshvandra Verma | Shailendra Singh Gaurav | Dharmendra Pratap
Source: Scientific Reports (article, 2024-03-11)
Field: Materials Science — Materials Chemistry

Comprehensive antifungal investigation of green synthesized silver nanoformulation against four agriculturally significant fungi and its cytotoxic applications The present study reports the green synthesis of silver nanoparticles (AgNPs) in powder form using the leaf extract of Azadirachta indica. The synthesis of AgNPs was confirmed by UV-vis spectroscopy, FTIR, XRD, FESEM, and EDX. The synthesized AgNPs were in a powdered state and dispersed completely in 5% polyethylene glycol (PEG) and demonstrated prolonged shelf life and enhanced bioavailability over a year without any aggregation. The resulting silver nanoformulation demonstrated complete inhibition against Sclerotinia sclerotiorum and Colletotrichum falcatum and 68% to 80% inhibition against Colletotrichum gloeosporioides and Rhizoctonia solani respectively, at 2000 ppm. The EC<sub>50</sub> values determined through a statistical analysis were 66.42, 157.7, 19.06, and 33.30 ppm for S. sclerotiorum, C. falcatum, C. gloeosporioides, and R. solani respectively. The silver nanoformulation also established significant cytotoxicity, with a 74.96% inhibition rate against the human glioblastoma cell line U87MG at 250 ppm. The IC<sub>50</sub> value for the cancerous cell lines was determined to be 56.87 ppm through statistical analysis. The proposed silver nanoformulation may be used as a next-generation fungicide in crop improvement and may also find application in anticancer investigations. To the best of our knowledge, this is also the first report of silver nanoformulation demonstrating complete inhibition against the economically significant phytopathogen C. falcatum. Rhizoctonia solani ; Sclerotinia sclerotiorum ; Polyethylene glycol ; Nuclear chemistry ; Silver nanoparticle ; Fungicide ; Antifungal ; Chemistry ; Horticulture ; PEG ratio ; Food science ; Biology ; Materials science ; Microbiology ; Nanoparticle ; Nanotechnology ; Biochemistry Nanoparticles: synthesis and applications ; Plant Growth Enhancement Techniques ; Nanocomposite Films for Food Packaging