Pub Date : 2025-06-01Epub Date: 2025-05-24DOI: 10.1016/j.jil.2025.100155
Kayim Pineda-Urbina , Gururaj Kudur Jayaprakash , Roberto Flores-Moreno , Ulises G. Reyes-Leaño , Zeferino Gómez-Sandoval , José Manuel Flores-Álvarez , Henry Nicole González-Ramírez , Bhavana Rikhari
Density Functional Theory (DFT) and Quantum Theory of Atoms in Molecules (QTAIM) are used in this work to examine the adsorption and interaction mechanisms of the N-octyl pyridinium cation (OP) on graphene. According to the adsorption energy analysis, the most stable configuration () with a Boltzmann probability greater than 99% is the G-OP-1 configuration, which is defined by a planar alignment of the alkyl chain with the graphene surface. In comparison to the isolated components, the G-OP-1 complex’s HOMO-LUMO energy gap () was considerably smaller, suggesting improved reactivity and effective electron transmission. While QTAIM showed 12 bond critical points (BCPs) compatible with weak electrostatic interactions sustained by van der Waals forces, Fukui function analysis discovered complimentary nucleophilic and electrophilic areas. These results highlight the potential of OP-functionalized graphene for use in electrochemical sensing and catalysis, laying the groundwork for the development of cutting-edge materials for environmental monitoring and energy storage.
{"title":"Exploring the adsorption behavior of N-octyl pyridinium ionic liquids on graphene: Insights into reactivity and stability","authors":"Kayim Pineda-Urbina , Gururaj Kudur Jayaprakash , Roberto Flores-Moreno , Ulises G. Reyes-Leaño , Zeferino Gómez-Sandoval , José Manuel Flores-Álvarez , Henry Nicole González-Ramírez , Bhavana Rikhari","doi":"10.1016/j.jil.2025.100155","DOIUrl":"10.1016/j.jil.2025.100155","url":null,"abstract":"<div><div>Density Functional Theory (DFT) and Quantum Theory of Atoms in Molecules (QTAIM) are used in this work to examine the adsorption and interaction mechanisms of the N-octyl pyridinium cation (OP) on graphene. According to the adsorption energy analysis, the most stable configuration (<span><math><mrow><mn>50</mn><mo>.</mo><mn>73</mn><mspace></mspace><mtext>kcal/mol</mtext></mrow></math></span>) with a Boltzmann probability greater than 99% is the G-OP-1 configuration, which is defined by a planar alignment of the alkyl chain with the graphene surface. In comparison to the isolated components, the G-OP-1 complex’s HOMO-LUMO energy gap (<span><math><mrow><mn>6</mn><mo>.</mo><mn>23</mn><mspace></mspace><mtext>kcal/mol</mtext></mrow></math></span>) was considerably smaller, suggesting improved reactivity and effective electron transmission. While QTAIM showed 12 bond critical points (BCPs) compatible with weak electrostatic interactions sustained by van der Waals forces, Fukui function analysis discovered complimentary nucleophilic and electrophilic areas. These results highlight the potential of OP-functionalized graphene for use in electrochemical sensing and catalysis, laying the groundwork for the development of cutting-edge materials for environmental monitoring and energy storage.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100155"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-02-25DOI: 10.1016/j.jil.2025.100138
Yuchao Li , Yuli Kou , Jide Wang , Yansong Zhao
Liquid water is an important solvent for carbon-based life, due to its special structure and hydrogen bond engaging the biochemical reactions and energy transformations in the cell. However, the liquid window of water is narrow, within 0–100 °C at 1 atm. When water is partly replaced using ionic liquids (ILs) to transfer energy and nutrition, life activities may happen at a wide temperature range and a wide pressure range on earth, in the solar system and the universe. Aqueous Gly-based ILs were employed as a culture medium for the cultivation of algae. Four different kinds of Gly-based ILs were first synthesized by neutral reaction. Structure of synthesized ILs was confirmed by FT-IR and NMR. Furthermore, effect of Gly-based ILs concentration on algae growth was investigated. Growth rate of algae was tested by microscope and UV–vis according to the absorption of chlorophyll. The Gly-based IL presented higher biological compatibility of algae than previous work. The highest concentration of glycine phosphate suit for algae cultivation is 15 % and the algae could reproduce for 30 days without obvious inhibition. This research is promising work in the context of the cultivation of algae in amino acid IL based culture medium and exploring the life activity restricted zone on earth.
{"title":"Algae cultivation in Ultra-high concentration Amino acid based ionic liquids","authors":"Yuchao Li , Yuli Kou , Jide Wang , Yansong Zhao","doi":"10.1016/j.jil.2025.100138","DOIUrl":"10.1016/j.jil.2025.100138","url":null,"abstract":"<div><div>Liquid water is an important solvent for carbon-based life, due to its special structure and hydrogen bond engaging the biochemical reactions and energy transformations in the cell. However, the liquid window of water is narrow, within 0–100 °C at 1 atm. When water is partly replaced using ionic liquids (ILs) to transfer energy and nutrition, life activities may happen at a wide temperature range and a wide pressure range on earth, in the solar system and the universe. Aqueous Gly-based ILs were employed as a culture medium for the cultivation of algae. Four different kinds of Gly-based ILs were first synthesized by neutral reaction. Structure of synthesized ILs was confirmed by FT-IR and NMR. Furthermore, effect of Gly-based ILs concentration on algae growth was investigated. Growth rate of algae was tested by microscope and UV–vis according to the absorption of chlorophyll. The Gly-based IL presented higher biological compatibility of algae than previous work. The highest concentration of glycine phosphate suit for algae cultivation is 15 % and the algae could reproduce for 30 days without obvious inhibition. This research is promising work in the context of the cultivation of algae in amino acid IL based culture medium and exploring the life activity restricted zone on earth.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100138"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-04-24DOI: 10.1016/j.jil.2025.100153
Ankita S. Chandak , Ritesh Motghare , Ratiram G. Chaudhary , Sangesh P. Zodape
<div><div>This study explores deep eutectic solvents (DESs) as environmentally friendly green solvents with potential applications in the formulation of drug delivery systems (DDSs). By focusing on the important aspect of optimizing molecular interactions between drugs and DESs, this work offers thermodynamic and molecular interaction insights that facilitate the strategic selection of suitable solvents for advanced medicinal applications. In this regard, the density(<span><math><mi>ρ</mi></math></span>) and sound velocity (<span><math><mi>u</mi></math></span>) of the drug Promethazine hydrochloride (P.HCl) in aqueous and aqueous 0.5/ 1.0 mol.kg<sup>−1</sup> DES (ChCl:U) solutions were measured across various temperatures (288.18–318.15 at 5 K interval). The thermodynamic and compressibility properties such as apparent molar volume of solute <span><math><mrow><mo>(</mo><msub><mi>V</mi><mi>ϕ</mi></msub><mo>)</mo></mrow></math></span>, limiting apparent molar volume of solute <span><math><mrow><mo>(</mo><msubsup><mi>V</mi><mrow><mi>ϕ</mi></mrow><mn>0</mn></msubsup><mo>)</mo></mrow></math></span> apparent molar compressibility of solute <span><math><mrow><mo>(</mo><msub><mi>K</mi><mrow><mi>S</mi><mo>,</mo><mi>ϕ</mi></mrow></msub><mo>)</mo></mrow></math></span>, limiting apparent molar compressibility of solute <span><math><mrow><mo>(</mo><msubsup><mi>K</mi><mrow><mi>S</mi><mo>,</mo><mi>ϕ</mi></mrow><mn>0</mn></msubsup><mo>)</mo></mrow></math></span>, isentropic compressibility of solution <span><math><mrow><mo>(</mo><msub><mi>κ</mi><mi>S</mi></msub><mo>)</mo></mrow></math></span>, thermal expansion coefficient <span><math><mrow><mo>(</mo><mi>α</mi><mo>)</mo></mrow></math></span>, apparent molar expansivity of solute <span><math><mrow><mo>(</mo><msub><mi>E</mi><mi>ϕ</mi></msub><mo>)</mo></mrow></math></span> and limiting apparent molar expansivity of solute <span><math><mrow><mo>(</mo><msubsup><mi>E</mi><mi>ϕ</mi><mn>0</mn></msubsup><mo>)</mo></mrow></math></span> were computed from the experimental results. Additionally, the positive values of transfer parameters (<span><math><mrow><msub><mstyle><mi>Δ</mi></mstyle><mrow><mi>t</mi><mi>r</mi></mrow></msub><msubsup><mi>V</mi><mi>ϕ</mi><mn>0</mn></msubsup></mrow></math></span>) and (<span><math><mrow><msub><mstyle><mi>Δ</mi></mstyle><mrow><mi>t</mi><mi>r</mi></mrow></msub><msubsup><mrow><msub><mi>K</mi><mi>s</mi></msub></mrow><mi>ϕ</mi><mn>0</mn></msubsup></mrow></math></span>) suggested the dominance of ionic-hydrophilic interactions. Further, positive Hepler's constant <span><math><mrow><mo>(</mo><mrow><msup><mrow><mi>∂</mi></mrow><mn>2</mn></msup><msubsup><mi>V</mi><mi>ϕ</mi><mn>0</mn></msubsup><mo>/</mo><mi>∂</mi><msup><mrow><mi>T</mi></mrow><mn>2</mn></msup></mrow><mo>)</mo></mrow></math></span> values represent structure-making ability of drug P.HCl in all the investigated systems. Also, DFT analysis by using Gaussian 09 at B3LYP/6–311+<em>G</em>(d,p) was used for geometry optimization, reactive s
{"title":"Thermodynamic and computational studies of Promethazine hydrochloride drug in aqueous and aqueous Choline-based deep eutectic solutions","authors":"Ankita S. Chandak , Ritesh Motghare , Ratiram G. Chaudhary , Sangesh P. Zodape","doi":"10.1016/j.jil.2025.100153","DOIUrl":"10.1016/j.jil.2025.100153","url":null,"abstract":"<div><div>This study explores deep eutectic solvents (DESs) as environmentally friendly green solvents with potential applications in the formulation of drug delivery systems (DDSs). By focusing on the important aspect of optimizing molecular interactions between drugs and DESs, this work offers thermodynamic and molecular interaction insights that facilitate the strategic selection of suitable solvents for advanced medicinal applications. In this regard, the density(<span><math><mi>ρ</mi></math></span>) and sound velocity (<span><math><mi>u</mi></math></span>) of the drug Promethazine hydrochloride (P.HCl) in aqueous and aqueous 0.5/ 1.0 mol.kg<sup>−1</sup> DES (ChCl:U) solutions were measured across various temperatures (288.18–318.15 at 5 K interval). The thermodynamic and compressibility properties such as apparent molar volume of solute <span><math><mrow><mo>(</mo><msub><mi>V</mi><mi>ϕ</mi></msub><mo>)</mo></mrow></math></span>, limiting apparent molar volume of solute <span><math><mrow><mo>(</mo><msubsup><mi>V</mi><mrow><mi>ϕ</mi></mrow><mn>0</mn></msubsup><mo>)</mo></mrow></math></span> apparent molar compressibility of solute <span><math><mrow><mo>(</mo><msub><mi>K</mi><mrow><mi>S</mi><mo>,</mo><mi>ϕ</mi></mrow></msub><mo>)</mo></mrow></math></span>, limiting apparent molar compressibility of solute <span><math><mrow><mo>(</mo><msubsup><mi>K</mi><mrow><mi>S</mi><mo>,</mo><mi>ϕ</mi></mrow><mn>0</mn></msubsup><mo>)</mo></mrow></math></span>, isentropic compressibility of solution <span><math><mrow><mo>(</mo><msub><mi>κ</mi><mi>S</mi></msub><mo>)</mo></mrow></math></span>, thermal expansion coefficient <span><math><mrow><mo>(</mo><mi>α</mi><mo>)</mo></mrow></math></span>, apparent molar expansivity of solute <span><math><mrow><mo>(</mo><msub><mi>E</mi><mi>ϕ</mi></msub><mo>)</mo></mrow></math></span> and limiting apparent molar expansivity of solute <span><math><mrow><mo>(</mo><msubsup><mi>E</mi><mi>ϕ</mi><mn>0</mn></msubsup><mo>)</mo></mrow></math></span> were computed from the experimental results. Additionally, the positive values of transfer parameters (<span><math><mrow><msub><mstyle><mi>Δ</mi></mstyle><mrow><mi>t</mi><mi>r</mi></mrow></msub><msubsup><mi>V</mi><mi>ϕ</mi><mn>0</mn></msubsup></mrow></math></span>) and (<span><math><mrow><msub><mstyle><mi>Δ</mi></mstyle><mrow><mi>t</mi><mi>r</mi></mrow></msub><msubsup><mrow><msub><mi>K</mi><mi>s</mi></msub></mrow><mi>ϕ</mi><mn>0</mn></msubsup></mrow></math></span>) suggested the dominance of ionic-hydrophilic interactions. Further, positive Hepler's constant <span><math><mrow><mo>(</mo><mrow><msup><mrow><mi>∂</mi></mrow><mn>2</mn></msup><msubsup><mi>V</mi><mi>ϕ</mi><mn>0</mn></msubsup><mo>/</mo><mi>∂</mi><msup><mrow><mi>T</mi></mrow><mn>2</mn></msup></mrow><mo>)</mo></mrow></math></span> values represent structure-making ability of drug P.HCl in all the investigated systems. Also, DFT analysis by using Gaussian 09 at B3LYP/6–311+<em>G</em>(d,p) was used for geometry optimization, reactive s","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100153"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We studied the solvent effect of imidazolium ionic liquids, which are media with microphase separation in their structure, on the cationic dye ABPX01. The proton accepting capacity of ionic liquids differs depending on their anions. Protonation of ABPX01 was enhanced in ionic liquids composed of anions with low proton accepting capacity, resulting in an increased proportion of dicationic forms. The alkyl group of the imidazolium cation caused a macroscopic change in viscosity, leading to a slight enhancement of the fluorescence intensity and an extension of the fluorescence lifetime. ABPX has potential material applications as a probe for the proton accepting capacity of ionic liquids and as a dye with AIE properties when used with suitable ionic liquids as a medium.
{"title":"Solvent effects of imidazolium ionic liquids on photophysical properties of π-electron extended rhodamine dye ABPX","authors":"Kaoru Nobuoka , Shinji Enoki , Hideyuki Tanaka , Satoshi Kitaoka","doi":"10.1016/j.jil.2025.100137","DOIUrl":"10.1016/j.jil.2025.100137","url":null,"abstract":"<div><div>We studied the solvent effect of imidazolium ionic liquids, which are media with microphase separation in their structure, on the cationic dye ABPX01. The proton accepting capacity of ionic liquids differs depending on their anions. Protonation of ABPX01 was enhanced in ionic liquids composed of anions with low proton accepting capacity, resulting in an increased proportion of dicationic forms. The alkyl group of the imidazolium cation caused a macroscopic change in viscosity, leading to a slight enhancement of the fluorescence intensity and an extension of the fluorescence lifetime. ABPX has potential material applications as a probe for the proton accepting capacity of ionic liquids and as a dye with AIE properties when used with suitable ionic liquids as a medium.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100137"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143209254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2024-12-04DOI: 10.1016/j.jil.2024.100128
Vinod Jadhav , Athmanand Anchi , Imamhusen Jamadar , Shruti S. Malunavar , Rajesh G. Kalkhambkar , Suraj M. Sutar
Iodine-catalyzed regioselective sulphenylation of various 3-substituted indoles using CS2 as potential tool is demonstrated. An efficient and eco-friendly protocol has been developed to synthesize libraries of 3-sulphenyl indoles by employing CS2 as sulphur coupling-linkage for various 1-aryltriaznes and indoles. Short reaction time, mild reaction conditions, recycle and reuse of ionic liquids (ILs) are the advantages of this methodology. A plausible reaction mechanism to narrate the exploitation of the catalytic and promoting systems is also highlights of this work.
{"title":"Iodine-catalyzed 1-Aryltriazene/CS2 duo for sonochemical synthesis of 3-Sulphenylindoles employing [BMIM(SO3H)][OTf] as recyclable promoting system.","authors":"Vinod Jadhav , Athmanand Anchi , Imamhusen Jamadar , Shruti S. Malunavar , Rajesh G. Kalkhambkar , Suraj M. Sutar","doi":"10.1016/j.jil.2024.100128","DOIUrl":"10.1016/j.jil.2024.100128","url":null,"abstract":"<div><div>Iodine-catalyzed regioselective sulphenylation of various 3-substituted indoles using CS<sub>2</sub> as potential tool is demonstrated. An efficient and eco-friendly protocol has been developed to synthesize libraries of 3-sulphenyl indoles by employing CS<sub>2</sub> as sulphur coupling-linkage for various 1-aryltriaznes and indoles. Short reaction time, mild reaction conditions, recycle and reuse of ionic liquids (ILs) are the advantages of this methodology. A plausible reaction mechanism to narrate the exploitation of the catalytic and promoting systems is also highlights of this work.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100128"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2024-12-03DOI: 10.1016/j.jil.2024.100129
Van Duc Chien , Kiem Do Van , Thi Hinh Dinh , Dao Lien Tien , Tu Manh Le
Nickel-chromium alloys are known for their superior corrosion resistance, wear resistance, and hardness, making them a topic of significant interest. This study explores the electrodeposition of Ni-Cr alloys onto a glassy carbon electrode from a choline chloride/urea deep eutectic solvent. Electrochemical techniques, including cyclic voltammetry and chronoamperometry, were utilized to explore the deposition process. Voltametric analysis revealed that Ni-Cr alloys could be electrodeposited from the reline deep eutectic solvent through a single potential step. The analysis of current density transients indicated that the electrocrystallization of Ni-Cr follows a three-dimensional (3D) nucleation and diffusion-controlled mechanism on the bimetallic growing surface. Additionally, the presence of the Ni(II) component was found to significantly enhance the kinetics of Ni-Cr phase formation, facilitating rapid deposition from the eutectic mixture. Surface characterization techniques, including scanning electron microscopy, energy-dispersive X-ray spectroscopy mapping, and X-ray diffraction, confirmed the uniform distribution of elements, the formation of the Ni-Cr phase, and its crystalline structure. The high quality of nickel-chromium alloys obtained from the reline deep eutectic solvent highlights their potential applications in various engineering fields, particularly in surface coating and metal protection.
{"title":"Outstanding electrocatalytic activity and corrosion property of NiCr nanoparticle alloys electrodeposited from a choline chloride/urea deep eutectic solvent","authors":"Van Duc Chien , Kiem Do Van , Thi Hinh Dinh , Dao Lien Tien , Tu Manh Le","doi":"10.1016/j.jil.2024.100129","DOIUrl":"10.1016/j.jil.2024.100129","url":null,"abstract":"<div><div>Nickel-chromium alloys are known for their superior corrosion resistance, wear resistance, and hardness, making them a topic of significant interest. This study explores the electrodeposition of Ni-Cr alloys onto a glassy carbon electrode from a choline chloride/urea deep eutectic solvent. Electrochemical techniques, including cyclic voltammetry and chronoamperometry, were utilized to explore the deposition process. Voltametric analysis revealed that Ni-Cr alloys could be electrodeposited from the reline deep eutectic solvent through a single potential step. The analysis of current density transients indicated that the electrocrystallization of Ni-Cr follows a three-dimensional (3D) nucleation and diffusion-controlled mechanism on the bimetallic growing surface. Additionally, the presence of the Ni(II) component was found to significantly enhance the kinetics of Ni-Cr phase formation, facilitating rapid deposition from the eutectic mixture. Surface characterization techniques, including scanning electron microscopy, energy-dispersive X-ray spectroscopy mapping, and X-ray diffraction, confirmed the uniform distribution of elements, the formation of the Ni-Cr phase, and its crystalline structure. The high quality of nickel-chromium alloys obtained from the reline deep eutectic solvent highlights their potential applications in various engineering fields, particularly in surface coating and metal protection.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100129"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Corrosion, a globally recognized issue, leads to reduced efficiency, significant economic losses, and the depletion of natural resources. Ionic liquids, particularly phosphonium-based compounds, are considered environmentally benign and sustainable alternatives. In this study, the use of Benzyl Triphenyl Phosphonium Bromide (BTPB) as a novel and efficient corrosion inhibitor for 6106 aluminum alloy in hydrochloric acid was investigated through electrochemical and surface analysis techniques. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and weight loss measurements were employed to evaluate its inhibition performance. BTPB exhibited an exceptional maximum inhibition efficiency of 95.95 % at 308 K, with efficiency improving with increasing concentration. Adsorption studies indicated that BTPB follows the Langmuir adsorption isotherm, while thermodynamic analysis provided deeper insights into the adsorption mechanism. Furthermore, surface characterization by scanning electron microscopy (SEM), atomic force microscopy (AFM), and density functional theory (DFT) calculations supported the experimental findings, confirming strong interactions between BTPB molecules and the aluminum surface. The outstanding inhibition efficiency, combined with the green and environmentally friendly nature of BTPB, underscores its potential as an advanced corrosion inhibitor for aluminum alloys in acidic environments.
{"title":"Benzyl triphenyl phosphonium bromide as a corrosion inhibitor: A multifaceted study on aluminium protection in acidic environment","authors":"Mansi Y. Chaudhary , Meenakshi Gupta , Yudhvir Singh Sharma , Prerna Bansal , Shikha Kaushik , Rajni Kanojia , Manish Kumar Gautam , Shramila Yadav","doi":"10.1016/j.jil.2025.100152","DOIUrl":"10.1016/j.jil.2025.100152","url":null,"abstract":"<div><div>Corrosion, a globally recognized issue, leads to reduced efficiency, significant economic losses, and the depletion of natural resources. Ionic liquids, particularly phosphonium-based compounds, are considered environmentally benign and sustainable alternatives. In this study, the use of Benzyl Triphenyl Phosphonium Bromide (BTPB) as a novel and efficient corrosion inhibitor for 6106 aluminum alloy in hydrochloric acid was investigated through electrochemical and surface analysis techniques. Potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and weight loss measurements were employed to evaluate its inhibition performance. BTPB exhibited an exceptional maximum inhibition efficiency of 95.95 % at 308 K, with efficiency improving with increasing concentration. Adsorption studies indicated that BTPB follows the Langmuir adsorption isotherm, while thermodynamic analysis provided deeper insights into the adsorption mechanism. Furthermore, surface characterization by scanning electron microscopy (SEM), atomic force microscopy (AFM), and density functional theory (DFT) calculations supported the experimental findings, confirming strong interactions between BTPB molecules and the aluminum surface. The outstanding inhibition efficiency, combined with the green and environmentally friendly nature of BTPB, underscores its potential as an advanced corrosion inhibitor for aluminum alloys in acidic environments.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100152"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-03-27DOI: 10.1016/j.jil.2025.100146
Pravas Maity , Amrit Krishna Mitra
Nitrogen-containing heterocyclic compounds represent one of the most significant groups in traditional organic chemistry. Many pharmaceuticals, designed to replicate the bioactivity of natural compounds, contain these nitrogen-based heterocyclic compounds. Organic chemists have invested substantial effort into creating these compounds, focusing on innovative and efficient synthetic methods. Ionic liquids (ILs) are highly valued in organic synthesis due to their unique characteristics, such as a wide liquid range, superior solvating properties, low vapour pressure, non-flammability, eco-friendliness, and high thermal stability. They also enhance reaction rates and are easily recyclable. Their dual role as both catalysts and reaction media has drawn significant attention from chemists. With about 4000 research papers published annually, ILs continue to be a major focus of scientific exploration, particularly in the synthesis of nitrogen-containing heterocyclic compounds. This review aims to portray the synthesis of nitrogen-containing heterocyclic compounds (3-membered to 6-membered) assisted by ionic liquids.
{"title":"Ionic liquid-assisted approaches in the synthesis of nitrogen-containing heterocycles: A focus on 3- to 6-membered rings","authors":"Pravas Maity , Amrit Krishna Mitra","doi":"10.1016/j.jil.2025.100146","DOIUrl":"10.1016/j.jil.2025.100146","url":null,"abstract":"<div><div>Nitrogen-containing heterocyclic compounds represent one of the most significant groups in traditional organic chemistry. Many pharmaceuticals, designed to replicate the bioactivity of natural compounds, contain these nitrogen-based heterocyclic compounds. Organic chemists have invested substantial effort into creating these compounds, focusing on innovative and efficient synthetic methods. Ionic liquids (ILs) are highly valued in organic synthesis due to their unique characteristics, such as a wide liquid range, superior solvating properties, low vapour pressure, non-flammability, eco-friendliness, and high thermal stability. They also enhance reaction rates and are easily recyclable. Their dual role as both catalysts and reaction media has drawn significant attention from chemists. With about 4000 research papers published annually, ILs continue to be a major focus of scientific exploration, particularly in the synthesis of nitrogen-containing heterocyclic compounds. This review aims to portray the synthesis of nitrogen-containing heterocyclic compounds (3-membered to 6-membered) assisted by ionic liquids.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100146"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2025-02-01DOI: 10.1016/j.jil.2025.100136
Amizon Azizan , Rosmaria Abu Darim , Intan Suhada Azmi , Rafidah Jalil , Shareena Fairuz Abdul Manaf
So much about the crystallinity details during lignocellulosic biomass pretreatment using ionic liquid as solvent has not been highly progressively described. The high expense associated with specific ionic liquids may have impeded the advancement of their use in pretreatment and its subsequent steps. Initially, the pretreated empty fruit bunch, oil palm frond, and oil palm trunk using 1-ethyl-3-methylimidazolium acetate ([EMIM]Ac) as ionic liquid solvent during pretreatment have indicated prospective distortion of the cellulosic chains. Simply using the calculated crystallinity status, for instance, from X-Ray Diffraction or Fourier Transform Infrared Spectroscopy analyses, may assist during the early decisive point regarding pretreatment effectiveness. Thus, in this article, the crystallinity status, like the crystallinity index (CrI) from X-Ray Diffraction analysis, was used as a beneficial preliminary predictive index to describe the transformation of less ordered structures in lignocellulosic biomass as an early decisive point after pretreatment prior to any succeeding steps. For this, fifteen (15) sets of pretreatment optimization strategies with the Box-Behnken design method (Response Surface Methodology) solely on oil palm frond (OPF) were further proceeded with using [EMIM]Ac concentration percentages of 20, 40, and 60% (v/v), with OPF solid loading percentages of 5, 10, and 15% (w/v), as well as at reactor temperatures of 90, 110, and 130 °C. All the linear model terms of these independent variables, along with the 2-way interaction model between the ionic liquid and solid loading, were found to be significant to the effect of CrI on the pretreated OPF. The proposed optimized pretreatment variable region for lower CrI was observed and concluded to be approximately 48% [EMIM]Ac with a solid loading of 12% OPF-[EMIM]Ac at a temperature of 93 °C. The optimized pretreatment strategy indicated a moderate balance between ionic liquid concentration percentage and operating temperature on a solid loading per volume basis. With this optimization data route, the challenge of determining which highly efficient ionic liquid is costly during pretreatment on any biomass can be shortened by preliminary CrI value benchmarking.
{"title":"Understanding crystallinity indexes benchmarking concept from optimized parametric ionic liquid pretreatment using 1-ethyl-3-methylimidazolium Acetate [EMIM]Ac on oil palm biomass","authors":"Amizon Azizan , Rosmaria Abu Darim , Intan Suhada Azmi , Rafidah Jalil , Shareena Fairuz Abdul Manaf","doi":"10.1016/j.jil.2025.100136","DOIUrl":"10.1016/j.jil.2025.100136","url":null,"abstract":"<div><div>So much about the crystallinity details during lignocellulosic biomass pretreatment using ionic liquid as solvent has not been highly progressively described. The high expense associated with specific ionic liquids may have impeded the advancement of their use in pretreatment and its subsequent steps. Initially, the pretreated empty fruit bunch, oil palm frond, and oil palm trunk using 1-ethyl-3-methylimidazolium acetate ([EMIM]Ac) as ionic liquid solvent during pretreatment have indicated prospective distortion of the cellulosic chains. Simply using the calculated crystallinity status, for instance, from X-Ray Diffraction or Fourier Transform Infrared Spectroscopy analyses, may assist during the early decisive point regarding pretreatment effectiveness. Thus, in this article, the crystallinity status, like the crystallinity index (CrI) from X-Ray Diffraction analysis, was used as a beneficial preliminary predictive index to describe the transformation of less ordered structures in lignocellulosic biomass as an early decisive point after pretreatment prior to any succeeding steps. For this, fifteen (15) sets of pretreatment optimization strategies with the Box-Behnken design method (Response Surface Methodology) solely on oil palm frond (OPF) were further proceeded with using [EMIM]Ac concentration percentages of 20, 40, and 60% (v/v), with OPF solid loading percentages of 5, 10, and 15% (w/v), as well as at reactor temperatures of 90, 110, and 130 °C. All the linear model terms of these independent variables, along with the 2-way interaction model between the ionic liquid and solid loading, were found to be significant to the effect of CrI on the pretreated OPF. The proposed optimized pretreatment variable region for lower CrI was observed and concluded to be approximately 48% [EMIM]Ac with a solid loading of 12% OPF-[EMIM]Ac at a temperature of 93 °C. The optimized pretreatment strategy indicated a moderate balance between ionic liquid concentration percentage and operating temperature on a solid loading per volume basis. With this optimization data route, the challenge of determining which highly efficient ionic liquid is costly during pretreatment on any biomass can be shortened by preliminary CrI value benchmarking.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100136"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-06-01Epub Date: 2024-12-28DOI: 10.1016/j.jil.2024.100131
Emma Rowan, Anne Leung, Konstantinos Grintzalis
Ionic liquids emerged as promising environmentally friendly alternatives to volatile organic compounds offering reduced volatility and enhanced stability. However, their unavoidable introduction into natural environments led to ecological harm particularly to aquatic species. To address this effect-based methods are crucial for the early detection of environmental pollutants and mechanistic understanding of their actions. In this study, three methylimidazolium ionic liquids with varying carbon chain length (1-ethyl-3, 1‑butyl‑3 and 1-hexyl-3) were assessed on their impact on daphnids as a key model organism in ecotoxicology. Combining methods such activities of key enzymes and phenotypic endpoints such as feeding and mortality, revealed notable changes highlighting the sensitivity of these organisms to ionic liquids. The longer chain length resulted in higher mortality; however, this was not reflected in ingestion rates in neonates which was decreased by 1-ethyl-3-methylimidazolium. In addition, activity of peptidase was decreased across all ionic liquids and acid phosphatase was increased only in 1-ethyl-3-methylimidazolium and 1-hexyl-3-methylimidazolium. Finally, glutathione-S-transferase was significantly increased in 1-hexyl-3-methylimidazolium. This study demonstrates that increasing the carbon chain length of the IL results in the most significant changes in enzyme activity. Overall, the integration of daphnid-based assays provides valuable insights into the toxicological effects and environmental risks associated with emerging pollutants such as ionic liquids. This approach underscores the importance of employing advanced methodologies for effective environmental monitoring and protection of aquatic ecosystems.
离子液体作为挥发性有机化合物的有前途的环保替代品，具有降低挥发性和增强稳定性的优点。然而，它们不可避免地进入自然环境，导致生态危害，特别是对水生物种。为了解决这一问题，基于效应的方法对于环境污染物的早期检测和对其作用的机制理解至关重要。本研究以3种不同碳链长度的甲基咪唑离子液体（1-乙基-3、1-丁基-3和1-己基-3）作为生态毒理学的关键模式生物，评估了它们对水蚤的影响。结合关键酶的活性和表型终点（如摄食和死亡）的方法，揭示了这些生物对离子液体的敏感性的显著变化。链长度越长，死亡率越高；然而，这并没有反映在新生儿的摄食率上，1-乙基-3-甲基咪唑降低了摄食率。此外，所有离子液体中肽酶活性均降低，酸性磷酸酶仅在1-乙基-3-甲基咪唑和1-己基-3-甲基咪唑中升高。最后，谷胱甘肽- s -转移酶在1-己基-3-甲基咪唑中显著升高。本研究表明，增加IL的碳链长度对酶活性的影响最为显著。总的来说，以水蚤为基础的分析的整合为与离子液体等新兴污染物相关的毒理学效应和环境风险提供了有价值的见解。这种做法强调了采用先进方法进行有效环境监测和保护水生生态系统的重要性。
{"title":"Increasing the carbon chain length of imidazolium ionic liquids impacts their toxicity on daphnids","authors":"Emma Rowan, Anne Leung, Konstantinos Grintzalis","doi":"10.1016/j.jil.2024.100131","DOIUrl":"10.1016/j.jil.2024.100131","url":null,"abstract":"<div><div>Ionic liquids emerged as promising environmentally friendly alternatives to volatile organic compounds offering reduced volatility and enhanced stability. However, their unavoidable introduction into natural environments led to ecological harm particularly to aquatic species. To address this effect-based methods are crucial for the early detection of environmental pollutants and mechanistic understanding of their actions. In this study, three methylimidazolium ionic liquids with varying carbon chain length (1-ethyl-3, 1‑butyl‑3 and 1-hexyl-3) were assessed on their impact on daphnids as a key model organism in ecotoxicology. Combining methods such activities of key enzymes and phenotypic endpoints such as feeding and mortality, revealed notable changes highlighting the sensitivity of these organisms to ionic liquids. The longer chain length resulted in higher mortality; however, this was not reflected in ingestion rates in neonates which was decreased by 1-ethyl-3-methylimidazolium. In addition, activity of peptidase was decreased across all ionic liquids and acid phosphatase was increased only in 1-ethyl-3-methylimidazolium and 1-hexyl-3-methylimidazolium. Finally, glutathione-S-transferase was significantly increased in 1-hexyl-3-methylimidazolium. This study demonstrates that increasing the carbon chain length of the IL results in the most significant changes in enzyme activity. Overall, the integration of daphnid-based assays provides valuable insights into the toxicological effects and environmental risks associated with emerging pollutants such as ionic liquids. This approach underscores the importance of employing advanced methodologies for effective environmental monitoring and protection of aquatic ecosystems.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100131"},"PeriodicalIF":0.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143166609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号