Publications related to Solvents (10,000)
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In this work, by using a flexible tricarboxylate ligand 5-(4-carboxybenzyloxy) isophthalic acid (H3L), a novel pillar-layered Mn–organic framework, namely, [(CH3CH2)2NH2][Mn3(HL)L(AC)2] (SQNU-23, SQNU = Shangqiu Normal University), was synthesized by using a DEF/HAc solvent system. In SQNU-23, each S-shaped Mn-O chain is interconnected by two bridg...
1,2,3,4‐Tetrakis(carboxyphenyl)benzene (CPB) forms a predictable ladder‐shaped porous motif through intermolecular hydrogen‐bonding of the carboxy groups. The stacking manner of the ladder motif, on the other hand, cannot be controlled, yielding a crystal structure with discrete inclusion spaces. To modulate the stacking manner, its derivative CPB(...
A group of bithiophenyl compounds comprising the cyanoacrylate moiety were designed and successfully synthesized. The optical, (spectro)electrochemical, and aggregation-induced emission properties were studied. DFT calculations were used to explain the reaction’s regioselectivity and to determine the molecules’ energy parameters (i.e., band gaps, H...
pKa values of C−H bonds remain unreported and challenging in fluorous solvents because of these solvents’ unique physicochemical properties, although they have been measured, theorized and predicted successfully in water and common organic solvents. Herein, a new CF3SO2‐substituted anchor compound designed for matching the physicochemical propertie...
Blue perovskite light-emitting diodes (PeLEDs) still remain poorly developed due to the big challenge of achieving high-quality mixed-halide perovskites with wide optical bandgaps. Halide exchange is an effective scheme to tune the emission color of PeLEDs, while making perovskites susceptible to high defect density due to solvent erosion. Herein,...
Room‐temperature sodium‐sulfur (RT Na−S) batteries has attracted growing attentions in large‐scale energy storage technology, while the serious shuttle effect and interface side reaction limit its practical application. Despite fluoroethylene carbonate (FEC) has been widely used as an electrolyte additive or co‐solvent to facilitate the optimizatio...
The power conversion efficiency of organic solar cells (OSCs) is exceeding 20%, an advance in which morphology optimization has played a significant role. It is generally accepted that the processing solvent (or solvent mixture) can help optimize morphology, impacting the OSC efficiency. Here we develop OSCs that show strong tolerance to a range of...
A NaI‐promoted efficient synthesis of 2‐aryl benzothiazoles/benzoxazoles with various substituted acyl chlorides is described. The reaction proceeded using more environment‐friendly H2O media as a solvent. Mechanism studies verified that the reaction undergoes a ring‐opening process. This novel method could be suitable for benzothiazole and benzoxa...
A fluorenone derivative with an extended conjugated structure emitting visible light was examined as a functional fluorescent dye that responds to solvent and heat stimuli in a precisely controlled manner. Intermolecular hydrogen bonds between the fluorenone dye and solvent, which cause fluorescence (FL) quenching due to vibronic coupling, were bro...
The spinel material LiNi0.5‐xMn1.5+xO4 (LNMO) represents a very promising cathode candidate due to its high operating voltage and high specific capacity. Unfortunately, this material is suffering from capacity degradation and a low degree of cyclability at normal and elevated temperatures. Herein, using hydrogen peroxide (H2O2) as an activating rea...
Supercapacitors (SCs) are high‐power energy storage devices but often experience reduced electrochemical performance at low temperatures, especially below −30 °C, due to the high freezing points of conventional electrolytes. In this study, we introduce a novel high‐entropy electrolyte (HEE) for supercapacitors that extends operational capabilities...
Diazocines are photoswitches derived from azobenzenes by bridging the two phenyl rings in ortho position with a CH 2 CH 2 group forming an eight membered (diazocine) ring. Diazocine is superior to most azobenzenes in almost all photophysical properties (switching efficiency, quantum yield, wavelengths etc.). The biggest advantage, especially in pho...
Considerando a importância cultural e nutricional do óleo de patauá, a presente pesquisa trata da caracterização do óleo de patauá obtido por meio de diferentes solventes, com o intuito de proporcionar um maior conhecimento desse produto e comparar a eficiência e características dos óleos extraídos por solvente tradicional (hexano) e um solvente al...
Supercritical fluid technology is an innovative approach that has been extensively explored in various research fields, since it offers a way to limit or replace the use of organic solvents in numerous industrial processes [...]
An efficient oxidation of stilbenes to α‐diketones co‐catalyzed by bismuth nitrate and iodine is reported. The utilization of molecular oxygen as a terminal oxidant and water as the reaction solvent provides a low‐cost and environmentally friendly approach to preparing the α‐diketone derivatives from readily available stilbenes. Isotope labeling ex...
‐naphthalenophane.](publication/386420902/figure/fig3/AS:11431281294925636@1733337120202/Synthesis-of-221-4-naphthalenophane_Q320.jpg)
![Synthesis of [4,4′]biphenylophane.](publication/386420902/figure/fig4/AS:11431281294953678@1733337120461/Synthesis-of-4-4biphenylophane_Q320.jpg)
In this article, we present several organic synthetic way to synthesize a family of five polyaromatic molecules based on a cyclophane core. Our strategies revolves around palado‐catalyzed substitution on a [2.2]paracyclophane (pCp) building block. Direct formation of a cyclophane was also employed for two molecules. The polyaromatic nature of the c...
Hemicellulose-rich extracts obtained by pressurised hot water extraction of wood residues show promise as emulsion stabilisers. However, pressurised hot water extracts (PHWEs) from wood also contain lower molecular weight extractive components that may influence emulsion performance. This study investigated the effect of extractives on emulsion sta...
The advancement of aqueous zinc‐ion batteries (AZIBs) faces significant obstacles due to the typically loose and unstable solid electrolyte interphase (SEI), which fosters dendrite formation and undermines cycling performance, especially in cold environments. Here, a quasi‐high‐entropy solid electrolyte interphase (QHE‐SEI) formulated is introduced...
Brownian and fractional processes are useful computational tools for the modeling of physical phenomena. Here, modeling linear homopolymers in a solution as Brownian or fractional processes, we develop a formalism to take into account both the interactions of the polymer with the solvent as well as the effect of arbitrary polymer-polymer potentials...
The advancement of optical imaging technology has greatly facilitated the research on fluorescent probes with tumor imaging capabilities. Tetraphenylethlene (TPE) is a well-known molecule with aggregation-induced emission (AIE) properties. Accordingly, its derivatives have been widely used for fluorescence imaging of tumors. In the present study, w...
The electrochemical CO2 reduction reaction (CO2RR) is a promising technology for the utilization of captured CO2. Though systems using aqueous electrolytes is the state‐of‐the‐art, CO2RR in aprotic solvents are a promising alternative that can avoid the parallel hydrogen evolution reaction (HER). While system parameters, such as electrolyte composi...
![Preparation of CECIL [18-C-6 K]2[CO3]](publication/386383024/figure/fig2/AS:11431281294733735@1733281448209/Preparation-of-CECIL-18-C-6K2CO3_Q320.jpg)
An efficient method has been developed for the Biginelli synthesis of 3,4-dihydropyrimidin-2(1H)-one analogues by three component reaction of aryl aldehyde, aceto acetic ester and urea/thiourea under the influence of catalytic amount of Crown Ether Complex Cation Ionic Liquid (CECIL) [18-C-6 K]2[CO3] under solvent free reaction. This crucial Bigine...
The search for more sustainable reaction conditions has been necessary to obtain more selective processes. In this context, laccases have gained great notoriety in recent years. However, these enzymes are unstable in organic solvents and have low thermal stability. Alternatively, conjugation with PEG (PEGylation) can be essential to overcome these...
A TEMPO‐mediated method has been developed for the synthesis of bis(indolyl)‐methane derivatives by the cross‐dehydrogenative coupling between C(sp³)−H of para‐cresol derivatives and C(sp²)−H of indoles in moderate yields under aqueous conditions. This method utilizes toluene derivatives as starting materials, allowing for coupling without the need...
Bio-cement is a green and energy-saving building material, which has received wide attention in the field of ecological environment and geotechnical engineering in recent years. The aim of this study is to investigate the improvement effect of plant-based bio-cement (PBBC) in synergistic treatment of sand with organic materials, to highlight the ef...
Although commonly applied in various reactions, Shvo´s catalyst has not been modified towards solubility in highly polar solvents until now. Here, we report the straightforward synthesis of a disulfonate derivative...
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Deep eutectic electrolytes (DEE) have emerged as an innovative approach to address the instability and safety issues of lithium metal batteries at elevated temperatures. However, in practice, there is often an undesirable incompatibility between the eutectic mixture and electrodes, and also an insufficient reduction stability of DEE due to the incr...
Isoporous nanomaterials, with their proven potential for accurate molecular sieving, are of substantial interest in propelling sustainable membrane techniques. Covalent organic frameworks (COFs) are prominent due to their customizable isopores and chemistry. Still, the discrepancy in experimental and theoretical structures poses a challenge to deve...
Herein, a B5‐site‐rich Ru/MgAl2O4 nanocatalyst for the production of COx‐free hydrogen from ammonia (NH3) is synthesized using the polyol method. The polyol method enables size‐sensitive Ru‐nanoparticle growth and controlled B5‐site formation on the catalyst by tuning the carbon‐chain length of the polyol solvent used, obviating the use of a separa...
In recent years, aqueous zinc ion batteries (ZIBs) with ultra‐high safety and environmental friendliness have emerged as a promising candidates for energy storage and energy conversion devices. However, the severe side reactions and dendrites issues discourage the practical application of ZIBs. Recently, biopolymer‐based gel electrolytes have discl...
The legislation is limiting the use of harmful organic solvents in industrial processes. The elaboration of clear guidelines for minimizing the solvent residues, and the development and implementation of circular...
Although coating solid dosage forms, like tablets, is a standard practice, it is an important step that gives tablets unique properties. It improves the effectiveness of solid dose forms when taken orally and so satisfies a variety of clinical needs. Tablet coating is a technologically driven process; therefore, it depends on improvements in coatin...
For the purpose of determining the characteristics of the Cyanidin-3-O-glucoside chloride (COGC) dye, both an FT-IR spectrometer and a UV–Visible spect rometer were employed through the process. At a wavelength of 473 nm, a diode-pumped solid-state (DPSS) laser with an adjustable wavelength was used to quantify the thermally induced optical nonline...
Artificial intelligence (AI) is playing an increasingly critical role in advancing green organic chemistry by optimizing chemical processes to minimize environmental impact. From predicting reaction outcomes to designing eco-friendly synthetic pathways, AI tools are contributing to sustainable chemical research. This review explores the application...
El presente proyecto de investigación establece criterios generales para el diseño estático de “O-rings” en aplicaciones de configuración radial, usados en sistemas que confinan fluidos presurizados comunes en la industria Aeroespacial. Además de establecer los espacios de diseño en base a un diseño de Experimentos (DOE), y el uso de MINITAB en don...
Ionic liquids have been utilized in numerous significant applications within the field of chemistry, particularly in organic chemistry, due to their unique physical and chemical properties. In the realm of asymmetric transition-metal-catalyzed transformations, chiral ionic-liquid-supported ligands and their corresponding transition-metal complexes...
Two T‐shaped 14‐electron rhodium complexes 2 a and 2 b, “framed” and thus stabilized by PNP pincer ligands have been synthesized. The bis(t‐butyl)phosphine derived PNPtBu‐rhodium complex 2 a was isolated from pentane as the more stable cyclometalated Rh(III) hydrido complex and found to be in equilibrium with the T‐shaped 14e⁻ Rh(I) complex 2 aT wh...
Introdução: O câncer é uma doença de impacto para a saúde pública mundial e o ambiente de trabalho pode apresentar altas concentrações de agentes físicos, químicos e biológicos expondo os trabalhadores a agentes cancerígenos. Objetivo: Avaliar o perfil de casos de cânceres hematológicos suspeitos de câncer relacionado ao trabalho. Método: Avaliação...
A single, unified science seems far beyond our reach, yet the requirements for one are quite simple. All that is needed is a quantified factor that all events can be subsumed under. Think of science as a universal solvent. We can understand this better when we understand conventional physical sciences look at force as unifying factor common to all...
O Brasil é um dos principais produtores de mamão, com exportações recordes em 2023, 7% superiores ao ano anterior (SECEX, 2024). Os produtores usavam o fungicida Carbendazim, mas sua proibição pela ANVISA em 2022 tornou essencial a demonstração da isenção de resíduos dessa substância para garantir a aceitação nos mercados internacionais. Adaptar o...
Electron‐rich symmetric pull‐push‐pull molecules can act as efficient two‐photon absorbing units. When these chromophores are bonded directly to photo‐switchable molecules they can function as antenna systems to indirectly induce photochemical transformations in isomerizable groups after energy transfer. Recently, we developed an antenna–molecular...
The efficiency and purification effect of amine solutions directly impact the overall cost and environmental performance of high-sulfur natural gas purification. In recent years, significant advancements have been made in amine reclamation technologies targeting high-sulfur natural gas purification, with notable achievements in research and industr...
The one-pot multicomponent aza-Morita-Baylis-Hillman (MBH) reaction was performed under green conditions using 1,4-diazabicyclo[2.2.2]octane (DABCO) and Amberlyst ® 15 as a co-catalyst, at ambient temperature and under negligible amounts of non-hazardous solvent. A number of α-methylene-β-amino acid derivatives were produced in good to excellent yi...
We describe a selective preparation of a variety of functionalized pyrrolo[2,3‐c]tetrahydroquinolines and indolo[3,2‐c]tetrahydroquinolines in 40–82% and 40–80% yields from alkynyl‐tethered oximes with diaryliodonium triflates, respectively. The one‐pot reaction underwent N‐arylation, intramolecular [3+2] cycloaddition, selective [1.3] or [3,3]‐rea...
We present a computational study of the structure and of the transport properties of electrolytes based on Li[(CF₃SO₂)₂N] solutions in mixtures of sulfoxides and sulfones solvents. The simulations of the liquid phases have been carried out using molecular dynamics with a suitably parametrized model of the intermolecular potential based on a polariz...
S- lon® (S) is a locally produced polyvinyl chloride (PVC) based
solvent cement. It is highly flammable and comes as a clear, slightly
viscous liquid. Other constituents include 1-Cyclohexanone, 3- Butanone,
and 1-Acetone. It is used ubiquitously for building construction in Sri Lanka.
Even though clinical effects are not yet ascertained for th...
The utilization of Pd(ii)-catalyzed oxidation for the transformation of terminal olefins into methyl ketones has emerged as a particularly intriguing and versatile strategy in organic synthesis. Herein we report a novel Pd(ii)-catalyzed Wacker-type oxidation with covalent bidentate ligands. The ligand, 1-(pyridin-2-yl)-1,2-dihydro-3H-indazol-3-one,...
![Definite integral [lhs in Eq. (19)] computed using γ = 40 and plotted...](profile/Olga-Vinogradova/publication/386056705/figure/fig3/AS:11431281292437475@1732581316070/Definite-integral-lhs-in-Eq-19-computed-using-g-40-and-plotted-as-a-function-of-phs_Q320.jpg)
When we place conducting bodies in electrolyte solutions, their surface potential Φs appears to be much smaller in magnitude than the applied one Φ0 and normally does not obey the classical electrostatic boundary condition of a constant potential expected for conductors. In this paper, we demonstrate that an explanation of these observations can be...
In this article, polymerization processes are carried out under various physicochemical conditions. The reaction medium can be a solution of the polymer in a monomer or solvent with a viscosity from 10⁻³ to 10² -10³ Pa, a suspension of solid polymer particles in a hydrocarbon diluent or water with a polymer concentration from 10 to 60%, aqueous dis...
Página 36 Palabras de Mediación ha dicho que no puedo jugar un partido de la liga porque estaba fuera de la fila al salir al padre le pregunta que qué ha hecho al respecto, y éste dice que no puede hacer nada porque si no es peor y el profesor le impondrá un casti-go mayor. Su madre le dice que ella va a ha-blar con el profesor, a lo que el niño re...
The discovery of metal–organic frameworks (MOFs) with novel structures provides significant opportunities for developing porous solids with new properties and enriching the structural diversity of functional materials for various applications. The rational design of building units with specific geometric conformations is essential to direct the con...
Herein, we describe a novel coupling between ambiphilic 2-pyridylselenyl reagents and nitriles featuring an active α-methylene group. Depending on the solvent employed, this reaction can yield two distinct types of cationic pyridinium-fused selenium-containing heterocycles, 1,3-selenazolium or 1,2,4-selenadiazolium salts, in high yields. This is in...
There are different activation pathways for the oxidation of cellulose by the periodate-chlorite system: thermal activation, chemical activation and cellulosic pulp activation using chemical or mechanical pretreatments. This study aimed to compare the different possible activation methods applied on cellulose, focusing on their effects at the molec...
Xanthione is a sulfated polycyclic aromatic hydrocarbon which exhibits unique anti-Kasha properties and substantial sensitivity to its medium. Due to this sensitivity however, this makes xanthione-based systems very difficult to simulate. Further, xanthione’s is understood to be come more photostable in the presence of a highly polar medium, howeve...
Porous membranes are thin solid structures that allow the flow to pass through their tiny openings, called pores. Flow inertia may play a significant role in several filtration flows of natural and engineering interest. Here, we develop a predictive macroscopic model to describe solvent and solute flows past thin membranes for non-negligible inerti...