Journal of Molecular Liquids最新文献

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MD simulations of UCST liquid-liquid phase separations of [Hbet][Tf2N]/Water mixtures [Hbet][Tf2N]/水混合物UCST液-液分离的MD模拟
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-24 DOI: 10.1016/j.molliq.2026.129314
Hussen O. Mohammed , Ronen Zangi
{"title":"MD simulations of UCST liquid-liquid phase separations of [Hbet][Tf2N]/Water mixtures","authors":"Hussen O. Mohammed ,&nbsp;Ronen Zangi","doi":"10.1016/j.molliq.2026.129314","DOIUrl":"10.1016/j.molliq.2026.129314","url":null,"abstract":"<div><div>We investigate computationally the upper critical solution temperature (UCST) phase behavior of protonated trimethylglycine (betaine) bis(trifluoromethylsulfonyl)imide, [Hbet][Tf<sub>2</sub>N], ionic liquid (IL) mixed with water. Literature reports on charge-fixed force-field models of ILs in the neat phase indicate that in order to reproduce experimental data, down-scaling of the ionic charges is necessary, in many cases, by a factor of 0.7–0.9. This reduction in the unit charges of the ions reflects a transfer of charge from anion to cation in the condensed phase of the IL, a phenomenon not accounted for by classical mechanics. In this paper, we find that in order to reproduce the experimentally observed transformation of a liquid-liquid phase-separated (biphasic) state to a homogeneous state by a temperature increase, the charges of the cation and anion of [Hbet][Tf<sub>2</sub>N] ought to be scaled-down by a factor of 0.95. This scaling factor is closer to 1, compared to typical values found in neat ILs, likely because in water mixtures the anion-to-cation charge transfer is limited. The resulting phase diagram, and in particular, the chemical compositions of the IL-rich and water-rich phases as a function of temperature, displays excellent agreement with experimental data. Exact determination of the simulation’s critical temperature is not decisive, and a plausible temperature range extends from the experimentally determined <span><math><msub><mi>T</mi><mi>c</mi></msub></math></span> up to 10 K higher. Furthermore, the viscosities of the system at very low water contents are higher by a factor of 2–6, relative to values reported in experiments. Analyses of the interactions between and within the ions indicate they are governed by electrostatic forces, except for those within the anions, in which case, hydrophobic interactions between the trifluoromethyl groups seem to dominate. In contrast to ion-ion interactions, the effective strength of the ion-water attraction increases with temperature. Given that the UCST behavior of [Hbet][Tf<sub>2</sub>N]/water mixture has already been exploited to desalinate seawater by forward-osmosis, the results presented here can further assist in designing and fine-tuning more efficient thermoresponsive draw solutes.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129314"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flotation separation mechanism of calcium minerals using novel synthesized amino acid based anionic collectors 新型合成氨基酸基阴离子捕收剂浮选分离钙矿物的机理
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-24 DOI: 10.1016/j.molliq.2026.129313
Manas Barai , N.S. Venkataramanan
{"title":"Flotation separation mechanism of calcium minerals using novel synthesized amino acid based anionic collectors","authors":"Manas Barai ,&nbsp;N.S. Venkataramanan","doi":"10.1016/j.molliq.2026.129313","DOIUrl":"10.1016/j.molliq.2026.129313","url":null,"abstract":"<div><div>Specific separation of fluorite and phosphate ores, such as fluorite (CaF<sub>2</sub>) and apatite (Ca<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>(OH, F, Cl) from carbonate ores, i.e., dolomite (CaMg(CO<sub>3</sub>)<sub>2</sub>), magnesite (Mg(CO<sub>3</sub>)<sub>2</sub>), and calcite (CaF<sub>2</sub>) and individual separation of apatite from fluorite using <em>N</em>-dodecyl glycinate (C<sub>12</sub>GlyNa), −aminomalonate (C<sub>12</sub>MalNa<sub>2</sub>), −aspartate (C<sub>12</sub>AspNa<sub>2</sub>), and -glutamate (C<sub>12</sub>GluNa<sub>2</sub>) surfaces were recorded by Hallimond tube flotation, ζ potential, UV–Vis absorbance, FTIR, molecular modeling, and DFT calculations. After carbonate mineral dissolution in collector solution, pH values changed from 2 to 7, but values remained unchanged for apatite and fluorite at a fixed 2 × 10<sup>−4</sup> (M) concentration. With increasing the pH and concentration, recovery efficacy and negative ζ potential values increased significantly, resulting in spontaneous monolayer adsorptions. Monocarboxylate C<sub>12</sub>GlyNa exhibited higher but non-selective flotation across all minerals at natural and 10.5 pH. In contrast, the dicarboxylate group of C<sub>12</sub>MalNa<sub>2</sub> is separated by one carbon atom, showing higher recovery for apatite and fluorite, but two and three methylene spacers, C<sub>12</sub>AspNa<sub>2</sub> and C<sub>12</sub>GluNa<sub>2</sub> exhibit approximately two-time higher O<img>O distances than the M-M distance of apatite, but this distance is nicely matched with fluorite, resulting in higher flotation for fluorite than apatite. Calcite-coated C<sub>12</sub>MalNa<sub>2</sub> did not show flotation because one Ca metal electrostatically interacted with one -(COO)<sup>−</sup> unit; on the other hand, apatite exhibited higher recovery due to the spontaneous monolayer adsorption through electrostatic interactions between Ca<img>Ca with two -(COO)<sup>−</sup> units, resulting in apatite separation from calcite. The amount of collector remaining in solution after adsorption values were measured by UV–Vis spectroscopy. With varying concentration and pH at a fixed 2 × 10<sup>−4</sup> M, surface adsorption rates were scrutinized by area under the alkyl -(CH<sub>2</sub>) stretching absorption band at (2993–2967 cm<sup>−1</sup>) and (2895–2810 cm<sup>−1</sup>) by FTIR. Molecular modeling and DFT calculations were used to expose the adsorption mechanism of amino acid-based collectors on mineral surfaces to improve recovery efficiency.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129313"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermophysical properties of natural hydrophobic deep eutectic solvents composed of menthol, thymol, and linalool 由薄荷醇、百里香酚和芳樟醇组成的天然疏水深共晶溶剂的热物理性质
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2025-12-24 DOI: 10.1016/j.molliq.2025.129187
Yueting Xiao, Junliang Liu, Biyao Liu, Jiaqi Cai, Jing Tong
{"title":"Thermophysical properties of natural hydrophobic deep eutectic solvents composed of menthol, thymol, and linalool","authors":"Yueting Xiao,&nbsp;Junliang Liu,&nbsp;Biyao Liu,&nbsp;Jiaqi Cai,&nbsp;Jing Tong","doi":"10.1016/j.molliq.2025.129187","DOIUrl":"10.1016/j.molliq.2025.129187","url":null,"abstract":"<div><div>With the rapid development of sustainable chemistry and green industries, Type <em>V</em> natural deep eutectic solvents have demonstrated broad application prospects across multiple fields due to their natural origin, low toxicity, biodegradability, and excellent hydrophobicity. In this study, monoterpenoids such as menthol, thymol, and linalool were selected as starting materials. By precisely adjusting the molar ratio of hydrogen bond donors to acceptors, fifteen hydrophobic deep eutectic solvents (HDESs) with different compositions were successfully prepared. Key thermophysical properties, including density, viscosity, and surface tension, were systematically measured. The results indicate that these properties exhibit a clear dependence on both temperature and composition. Variations in hydrogen bonding strength and molecular packing modes among different components led to distinctly different characteristics in each formulated system. Based on the experimental data, key derived physical parameters such as sound velocity, lattice energy, and activation energy for viscous flow were further calculated, providing theoretical insight into the relationship between the microstructure and macroscopic properties of deep eutectic solvents.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129187"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigating the bimodality of liquid water via chemical bond descriptors and k-means clustering analysis 通过化学键描述符和k-means聚类分析研究液态水的双峰性
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-21 DOI: 10.1016/j.molliq.2026.129306
Mateus Quintano , Ayesh Madushanka , Carlos V. Santos Jr , Francielle C. Machado , Elfi Kraka , Ricardo L. Longo , Renaldo T. Moura Jr.
{"title":"Investigating the bimodality of liquid water via chemical bond descriptors and k-means clustering analysis","authors":"Mateus Quintano ,&nbsp;Ayesh Madushanka ,&nbsp;Carlos V. Santos Jr ,&nbsp;Francielle C. Machado ,&nbsp;Elfi Kraka ,&nbsp;Ricardo L. Longo ,&nbsp;Renaldo T. Moura Jr.","doi":"10.1016/j.molliq.2026.129306","DOIUrl":"10.1016/j.molliq.2026.129306","url":null,"abstract":"<div><div>Liquid water exhibits anomalous behavior, with several of its physical and chemical properties deviating from those of ordinary liquids. Some of these anomalies stem from a bimodality observed in macroscopic properties such as density, isothermal compressibility, and specific heat, as well as the radial distribution function and vibrational spectra, which reflect the collective structural dynamics of liquid water. The infrared spectrum is particularly sensitive to hydrogen-bonded arrangements, thus it could be a crucial link between macroscopic properties and microscopic interactions. This study utilizes structural models that align with the experimental infrared spectrum of liquid water, offering a novel proof of concept. It bridges a critical gap by demonstrating how the bimodality of liquid water can be revealed through fully localized chemical bond descriptors. These descriptors are derived from local vibrational mode theory, the chemical bond overlap model and its topological extension, as well as the quantum theory of atoms in molecules. Key findings reveal that the local force constant, intra-overlap Coulomb repulsion, and Cremer and Kraka’s energy density associated with hydrogen bonds exhibit bimodal behavior. Notably, by employing the unsupervised machine learning algorithm K-means for clustering analysis, we identified distinct regimes of hydrogen-bond strength, revealing systematic patterns that differentiate the low-density liquid and high-density liquid networks. Overall, this study reinforces the concept that liquid water consists of two distinct types of local structures, providing new insights into its bimodal nature and advances in this field.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129306"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unraveling the potential of zinc oxide nanosheets as conveyor of Flucytosine antifungal medication 揭示氧化锌纳米片作为氟胞嘧啶抗真菌药物输送的潜力
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-20 DOI: 10.1016/j.molliq.2026.129294
Anjaly Baiju Krishna , Arjun Suvilal , Rakhesh Vamadevan , Jeetu Satheesh Babu
{"title":"Unraveling the potential of zinc oxide nanosheets as conveyor of Flucytosine antifungal medication","authors":"Anjaly Baiju Krishna ,&nbsp;Arjun Suvilal ,&nbsp;Rakhesh Vamadevan ,&nbsp;Jeetu Satheesh Babu","doi":"10.1016/j.molliq.2026.129294","DOIUrl":"10.1016/j.molliq.2026.129294","url":null,"abstract":"<div><div>This study depicts <em>in-silico</em> interaction mechanisms of Flucytosine (5-FC) on two-dimensional (2-D) Zinc Oxide nanosheets (ZnONs), aiming a new antifungal drug delivery system. The adsorption analysis indicates that the complexes achieve stable configurations through exothermic reactions, with C-1 (−1.82 eV) showing strong chemisorption, while C-2 (−0.93 eV) and C-3 (−0.94 eV) exhibit near-chemisorption, reflecting a balance between secure drug attachment and efficient release. Interaction energy and Mulliken charge analyses reveal that C-1 is the most energetically favorable complex, characterized by significant O(5-FC)–Zn (ZnO) bonding and distinct electron transfer patterns that enhance complex stability. The calculated formation energy (−4.54 eV/atom) confirms the thermodynamic stability of ZnONs, and minimal alterations in 5-FC structural parameters upon adsorption ensure the retention of pharmacological activity. Electronic structure analyses demonstrate reductions in band gaps (23.77–13.69%) and shifts in total density of states, underscoring strong drug–carrier interactions through charge transfer and orbital hybridization. Solvation studies and recovery time analysis confirm aqueous stability and controlled release behavior. Further, pH sensitivity studies indicate that protonation at the adsorption site weakens the interaction, facilitating targeted drug release in acidic environments. Overall, ZnONs display structural robustness, electronic versatility, and responsive adsorption, making them effective and reliable carriers for 5-FC.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129294"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From solvation thermodynamics to polarity scales and universalities 从溶剂化热力学到极性尺度和普遍性
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-14 DOI: 10.1016/j.molliq.2026.129259
Costas Tsioptsias , William Acree Jr , Costas Panayiotou
{"title":"From solvation thermodynamics to polarity scales and universalities","authors":"Costas Tsioptsias ,&nbsp;William Acree Jr ,&nbsp;Costas Panayiotou","doi":"10.1016/j.molliq.2026.129259","DOIUrl":"10.1016/j.molliq.2026.129259","url":null,"abstract":"<div><div>Reliable information on intermolecular interactions is crucial for molecular thermodynamic modeling and in a vast range of practical applications, including solvent screening. A wealth of such information may be extracted from experimental data on solvation quantities by consistent use of Solvation Thermodynamics. This is facilitated when a holistic approach is adopted involving large number of systems of diverse character and their specific and non-specific interactions are treated on a common basis. The present work combines quantum chemical information on over 1400 solute molecules and experimental information on solvation enthalpy and free energy in common solvents in order to extract information on dispersion, (di)polar, and hydrogen-bonding (HB) interactions from over 190,000 solute – solvent systems. The widely used Abraham's LSER (linear solvation energy relationship) model has been restructured for handling this information and for the development of new polarity scales as well as acidity (HB donor capacity) and basicity (HB acceptor capacity) scales. The number of solvent systems with known LSER-type solvent-specific parameters has been increased significantly along with its predictive capacity. Self-solvation quantities over a broad range of external conditions have been explored as well and their universalities at the boiling point and the (vapor – liquid) critical point have been identified. Solvation parameters facilitating the exchange of thermodynamic information between diverse polarity scales have been developed. The significance and perspectives of these developments are discussed.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129259"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring the molecular mechanisms of Nanoplastic interactions with blood proteins by molecular dynamics and docking simulations 通过分子动力学和对接模拟探索纳米塑料与血液蛋白相互作用的分子机制
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-20 DOI: 10.1016/j.molliq.2026.129304
Benedikt J. Lohnes , Jonas Woller , Udo F. Hartwig , Nitesh K. Poddar
{"title":"Exploring the molecular mechanisms of Nanoplastic interactions with blood proteins by molecular dynamics and docking simulations","authors":"Benedikt J. Lohnes ,&nbsp;Jonas Woller ,&nbsp;Udo F. Hartwig ,&nbsp;Nitesh K. Poddar","doi":"10.1016/j.molliq.2026.129304","DOIUrl":"10.1016/j.molliq.2026.129304","url":null,"abstract":"<div><div>Plastic pollution represents a growing concern for human health, as micro- and nanosized particles can interfere with protein structure and function, potentially contributing to various physiological disorders. Nanosized plastics are particularly relevant due to their enhanced bioactivity, driven by their high surface-to-volume ratio, which promotes interactions with biomolecules. Here, we investigated the interaction of essential blood proteins, including human serum albumin (HSA), transthyretin (TTR), amyloid-β (Aβ<sub>1–40</sub>), and α-Synuclein (α-Syn), with computational nanoparticle models of common plastics exhibiting spherical (PE, PP, PVC, PEG) and elongated (PS, PET) morphologies.</div><div>Molecular dynamics (MD) and docking simulations revealed non-site-specific, high-affinity interactions, predominantly driven by hydrophobic contacts, with binding strengths modulated by polymer surface chemistry, particle shape, and protein structural properties. MM/PBSA calculations revealed protein-specific binding preferences, with α-Syn and HSA exhibiting a high affinity for PS and PVC, respectively, while TTR showed a preference for PVC. Moreover, calculated binding free energies ranged from generally moderate (Aβ<sub>1</sub><sub>–</sub><sub>40</sub>) to very strong (PS–HSA) interactions. Furthermore, RMSD analysis demonstrated that nanoplastic binding markedly reduces backbone mobility across all proteins, with the most pronounced effects observed in flexible, intrinsically disordered proteins Aβ<sub>1–40</sub> and α-Syn compared to globular transport proteins HSA and TTR, highlighting their susceptibility to diffuse, non-site-specific adsorption onto heterogeneous polymer surfaces.</div><div>These results suggest that plastic nanoparticles strongly interact with blood proteins, potentially impacting their structure and function. Furthermore, the binding may promote aggregation-prone states by restricting conformational mobility, providing a potential mechanistic link between plastic pollution and the development of neurodegenerative and cardiovascular pathologies.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129304"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Insights into the crystallization kinetics of lithium 12-hydroxystearate in lubricating oil from differential scanning calorimetry 差示扫描量热法研究12-羟基硬脂酸锂在润滑油中的结晶动力学
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-25 DOI: 10.1016/j.molliq.2026.129315
Bing Li, Bingbing Lai, Wenjing Lou, Gaiqing Zhao, Qian Jia, Xiaobo Wang
{"title":"Insights into the crystallization kinetics of lithium 12-hydroxystearate in lubricating oil from differential scanning calorimetry","authors":"Bing Li,&nbsp;Bingbing Lai,&nbsp;Wenjing Lou,&nbsp;Gaiqing Zhao,&nbsp;Qian Jia,&nbsp;Xiaobo Wang","doi":"10.1016/j.molliq.2026.129315","DOIUrl":"10.1016/j.molliq.2026.129315","url":null,"abstract":"<div><div>Lithium 12-hydroxystearate (Li12HS) and its derivatives serve as primary thickeners in grease formulations; however, the mechanistic pathway governing thickener network scaffolding via crystallization remains incompletely elucidated. This study systematically investigates the non-isothermal crystallization kinetics of Li12HS in synthetic ester oil using differential scanning calorimetry (DSC). Results demonstrate that the Avrami model adequately describes the melt-recrystallization process, revealing a two-dimensional flake-like growth mechanism followed by agglomeration into macrocrystalline assemblies. Notably, base oil molecules significantly constrain the conformational mobility of Li12HS molecular chains, thereby inducing crystallization retardation within the grease matrix. Jeziorny kinetic analysis of DSC thermograms and scanning electron microscopy (SEM) further reveals that the fibrillar growth mechanism—characterized by the progressive assembly and elongation of fibrils into bundled fibers—is the key process governing the formation of the lithium-grease network.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129315"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Topological hydrogen-bond saturation as a design route to type V deep eutectics 拓扑氢键饱和作为V型深共晶的设计途径
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-17 DOI: 10.1016/j.molliq.2026.129285
Alessandro Triolo , Emanuela Mangiacapre , Vitaly V. Chaban , Fabrizio Lo Celso , Franca Castiglione , László Almásy , Carlo Ottaviani , Martin Brehm , Olga Russina
{"title":"Topological hydrogen-bond saturation as a design route to type V deep eutectics","authors":"Alessandro Triolo ,&nbsp;Emanuela Mangiacapre ,&nbsp;Vitaly V. Chaban ,&nbsp;Fabrizio Lo Celso ,&nbsp;Franca Castiglione ,&nbsp;László Almásy ,&nbsp;Carlo Ottaviani ,&nbsp;Martin Brehm ,&nbsp;Olga Russina","doi":"10.1016/j.molliq.2026.129285","DOIUrl":"10.1016/j.molliq.2026.129285","url":null,"abstract":"<div><div>Type V deep eutectic solvents (DES), formed by combination of neutral hydrogen-bonding molecules, remain difficult to predict and engineer. The recent proposal that the asymmetric nature of hydrogen bonding (HB) donor and acceptor capability of precursors might be a key approach for their formulation requires validation. Here we show that the emergence of a topologically saturated hydrogen-bond network provides a mechanistic route to formulate such systems, exemplified by the carvacrol–dimethyl sulfoxide (DMSO) mixture. COSMO-RS screening predicts a profoundly deep eutectic (about 110 K depression) arising from donor-free, strong HB acceptor DMSO when paired with asymmetric HB donor carvacrol.</div><div>To our knowledge, this is the first example of a type V DES whose precursors are liquid at ambient conditions, thus enabling a detailed exploration of chemical physical properties and their excess values to be probed across the whole composition window.</div><div>This approach is fundamental to describe the complex structural and dynamical organization of carvacrol–DMSO mixtures across composition and relate hydrogen-bond topology to the onset of deep eutectic behaviour, on the basis of complementary thermophysical measurements, neutron scattering, NMR and classical molecular dynamics simulations.</div><div>The work addresses two main points: i) can present knowledge be used to custom engineer type V DES?; ii) how does the shifting interplay between intra- and interspecies interactions across composition translate into the deep eutectic nature of Type V mixtures?</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129285"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ferroelectric nematic phase at a photosensitive polymer substrate: comparing thermo-mechanical effect with photo-reorientation 光敏聚合物衬底上的铁电向列相:比较热机械效应和光定向
IF 5.2 2区 化学
Journal of Molecular Liquids Pub Date : 2026-03-15 Epub Date: 2026-01-19 DOI: 10.1016/j.molliq.2026.129288
Tibor Tóth-Katona , Ameer R.K. Nassrah , Péter Salamon , Antal Jákli , István Jánossy
{"title":"Ferroelectric nematic phase at a photosensitive polymer substrate: comparing thermo-mechanical effect with photo-reorientation","authors":"Tibor Tóth-Katona ,&nbsp;Ameer R.K. Nassrah ,&nbsp;Péter Salamon ,&nbsp;Antal Jákli ,&nbsp;István Jánossy","doi":"10.1016/j.molliq.2026.129288","DOIUrl":"10.1016/j.molliq.2026.129288","url":null,"abstract":"<div><div>The average direction of the molecules (director) of nematic liquid crystals (LCs) can be easily oriented by light using photosensitive surfaces (photoalignment). Recently, it was shown that in polar nematic (N<span><math><msub><mspace></mspace><mrow><mi>F</mi></mrow></msub></math></span>) liquid crystals the director field can be manipulated by a laser light induced temperature gradient. Here we investigate how the photoalignment compares to the thermo-mechanical effect in the N<span><math><msub><mspace></mspace><mrow><mi>F</mi></mrow></msub></math></span> phase. For that we study photo-reorientation phenomena on a photosensitive polymer substrate in the prototype ferroelectric nematic liquid crystal compound DIO. It is found that, while in the nonpolar nematic and antiferroelectric mesophases the photoalignment is observed, in the ferroelectric nematic phase the thermo-mechanical (TM) coupling determines the director alignment.</div></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":"446 ","pages":"Article 129288"},"PeriodicalIF":5.2,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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