Pub Date : 2025-03-24DOI: 10.1016/j.jil.2025.100147
Stephanie C. Jones , Devin J. Schwaibold , Grant Meadows , Brennan Shuler , Richard Sykora , Frank R. Fronczek , James H. Davis Jr , Benjamin F. Wicker
The syntheses of triphenyl-2-pyridylphosphonium salts, [Mopyphos]A, where A- = BF4-, B(C6H5)4-, (CF3SO2)2N-, Sac-, and Ace-. (Sac- = saccharinate, Ace- = acesulfamate) are described. These salts can be synthesized on a multi-gram scale with good yields and have been characterized by NMR, single crystal XRD, and HRMS. Thermal analyses indicate that the bistriflimide (Tf2N- = (CF3SO2)2N-) salts are especially amenable towards high-temperature ionic liquid (IL) applications with decomposition temperatures above 450°C. The synthetic methods described herein can be utilized to generate several phosphonium bistriflimide ILs of the general formula [(C6H5)3P-Ar]Tf2N, where Ar = N-heteroaryl).
{"title":"Facile synthesis of tetraaryl phosphonium ionic liquids","authors":"Stephanie C. Jones , Devin J. Schwaibold , Grant Meadows , Brennan Shuler , Richard Sykora , Frank R. Fronczek , James H. Davis Jr , Benjamin F. Wicker","doi":"10.1016/j.jil.2025.100147","DOIUrl":"10.1016/j.jil.2025.100147","url":null,"abstract":"<div><div>The syntheses of triphenyl-2-pyridylphosphonium salts, [Mopyphos]A, where A<sup>-</sup> = BF<sub>4</sub><sup>-</sup>, B(C<sub>6</sub>H<sub>5</sub>)<sub>4</sub><sup>-</sup>, (CF<sub>3</sub>SO<sub>2</sub>)<sub>2</sub>N<sup>-</sup>, Sac<sup>-</sup>, and Ace<sup>-</sup>. (Sac<sup>-</sup> = saccharinate, Ace<sup>-</sup> = acesulfamate) are described. These salts can be synthesized on a multi-gram scale with good yields and have been characterized by NMR, single crystal XRD, and HRMS. Thermal analyses indicate that the bistriflimide (Tf<sub>2</sub>N<sup>-</sup> = (CF<sub>3</sub>SO<sub>2</sub>)<sub>2</sub>N<sup>-</sup>) salts are especially amenable towards high-temperature ionic liquid (IL) applications with decomposition temperatures above 450°C. The synthetic methods described herein can be utilized to generate several phosphonium bistriflimide ILs of the general formula [(C<sub>6</sub>H<sub>5</sub>)<sub>3</sub>P-Ar]Tf<sub>2</sub>N, where Ar = N-heteroaryl).</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100147"},"PeriodicalIF":0.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738367","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 : 2025-03-19DOI: 10.1016/j.jil.2025.100144
L. Syam Sundar
In this study, the stable Graphene Oxide (GO) ionanofluids were prepared and investigated the thermophysical properties, heat transfer coefficient, and friction factor experimentally. These ionanofluids were prepared by dispersing the synthesized GO into the ionic liquid of 1-ethyl-3-methylimidazolium chloride [EMIM]Cl in the weight percentages of 0.05 %, 0.1 %, 0.3 % and 0.5 %, respectively. The obtained experimental data of Reynolds number, and weight percentage was used as input parameters, and heat transfer coefficient, Nusselt number, and friction factor was used as output parameters for the Artificial Neural Network- Scaled Conjugate Gradient (ANN-SCG) analysis. The results indicated that, the thermal conductivity is enhanced by 26.39 % at a temperature of 60°C, and the viscosity enhancement of 30.44 % at a temperature of 30°C, and at 0.5 % weight percentage. The results were also indicated that, the Nusselt number, heat transfer coefficient is enhanced by 32.27 %, and 41.96 %, with a friction factor penalty of 14.04 % at 0.5 % weight percentage and at a Reynolds number of 297.4, respectively, over base fluid. The ANN-SCG results are almost predicts high accuracy when compared with the experimental data. The correlation coefficient (R2) of Nusselt number, heat transfer coefficient, and friction factor are 0.9815, 0.9812, and 0.9918, respectively. Using the experimental data, a new Nusselt number and friction factor correlations were proposed.
{"title":"Graphene oxide based [EMIM]Cl ionanofluids in a tube and their heat transfer, and friction factor analyses under high Prandtl numbers: Experimental and ANN predictions","authors":"L. Syam Sundar","doi":"10.1016/j.jil.2025.100144","DOIUrl":"10.1016/j.jil.2025.100144","url":null,"abstract":"<div><div>In this study, the stable Graphene Oxide (GO) ionanofluids were prepared and investigated the thermophysical properties, heat transfer coefficient, and friction factor experimentally. These ionanofluids were prepared by dispersing the synthesized GO into the ionic liquid of 1-ethyl-3-methylimidazolium chloride [EMIM]Cl in the weight percentages of 0.05 %, 0.1 %, 0.3 % and 0.5 %, respectively. The obtained experimental data of Reynolds number, and weight percentage was used as input parameters, and heat transfer coefficient, Nusselt number, and friction factor was used as output parameters for the Artificial Neural Network- Scaled Conjugate Gradient (ANN-SCG) analysis. The results indicated that, the thermal conductivity is enhanced by 26.39 % at a temperature of 60°C, and the viscosity enhancement of 30.44 % at a temperature of 30°C, and at 0.5 % weight percentage. The results were also indicated that, the Nusselt number, heat transfer coefficient is enhanced by 32.27 %, and 41.96 %, with a friction factor penalty of 14.04 % at 0.5 % weight percentage and at a Reynolds number of 297.4, respectively, over base fluid. The ANN-SCG results are almost predicts high accuracy when compared with the experimental data. The correlation coefficient (R<sup>2</sup>) of Nusselt number, heat transfer coefficient, and friction factor are 0.9815, 0.9812, and 0.9918, respectively. Using the experimental data, a new Nusselt number and friction factor correlations were proposed.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100144"},"PeriodicalIF":0.0,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143735246","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 : 2025-03-18DOI: 10.1016/j.jil.2025.100142
Refilwe Mogale , Yuel W. Abraha , Marietjie Schutte-Smith , Hendrik.G. Visser , Elizabeth Erasmus
The transition to a sustainable chemical industry necessitates the development of environmentally friendly solvents and catalysts. Carbon dioxide utilization reactions offer a promising avenue for reducing greenhouse gas emissions, but their commercialization depends on the availability of green catalysts and solvents. Traditional options often suffer from toxicity, volatility, and flammability, hindering their industrial application. Natural deep eutectic solvents (NADES) present a sustainable alternative. This study explores the potential of NADES derived from choline chloride (ChCl) and indole-3-butyric acid (IBA) as catalysts for the cycloaddition of CO2 with epichlorohydrin. Nine NADES compositions were prepared and characterized using FTIR, NMR, DSC, and TGA. The [ChCl] : [IBA] (0.8 : 0.2) mixture exhibited the lowest melting point (4.4 °C) and the highest catalytic activity (TOF = 1091 h ¹). Under optimized conditions, the catalyst demonstrated excellent reusability, maintaining its activity over four catalytic cycles.
{"title":"Natural deep eutectic solvents (NADES) derived from choline chloride and indole-3-butyric acid for optimized CO2 utilization through cycloaddition with epichlorohydrin","authors":"Refilwe Mogale , Yuel W. Abraha , Marietjie Schutte-Smith , Hendrik.G. Visser , Elizabeth Erasmus","doi":"10.1016/j.jil.2025.100142","DOIUrl":"10.1016/j.jil.2025.100142","url":null,"abstract":"<div><div>The transition to a sustainable chemical industry necessitates the development of environmentally friendly solvents and catalysts. Carbon dioxide utilization reactions offer a promising avenue for reducing greenhouse gas emissions, but their commercialization depends on the availability of green catalysts and solvents. Traditional options often suffer from toxicity, volatility, and flammability, hindering their industrial application. Natural deep eutectic solvents (NADES) present a sustainable alternative. This study explores the potential of NADES derived from choline chloride (ChCl) and indole-3-butyric acid (IBA) as catalysts for the cycloaddition of CO<sub>2</sub> with epichlorohydrin. Nine NADES compositions were prepared and characterized using FTIR, NMR, DSC, and TGA. The [ChCl] : [IBA] (0.8 : 0.2) mixture exhibited the lowest melting point (4.4 °C) and the highest catalytic activity (TOF = 1091 h ¹). Under optimized conditions, the catalyst demonstrated excellent reusability, maintaining its activity over four catalytic cycles.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100142"},"PeriodicalIF":0.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696910","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 : 2025-03-15DOI: 10.1016/j.jil.2025.100143
Muhamad Iqbal Ishak , Asiah Nusaibah Masri , Azad Anugerah Ali Rasol , Izni Mariah Ibrahim , Hasrinah Hasbullah
Amino Acid Deep Eutectic Solvents (AADES) are emerging as a promising sustainable alternative to conventional organic solvents, particularly in oil purification processes. This review explores the unique properties of AADES, including their environmental benefits, biocompatibility, and high extraction efficiency. Given the limited availability of published studies specifically on AADES for oil purification, this work references research on deep eutectic solvents (DES) containing amino acids, as well as DES with mechanisms that could be applicable to AADES. The article highlights the potential role of AADES in enhancing oil purification techniques, offering a greener and more efficient approach to industrial applications. However, challenges remain, particularly regarding their scalability, long-term stability, and the lack of direct comparative studies with traditional solvents. By integrating insights from existing DES studies, this review underscores the need for further research to optimize AADES formulations for specific contaminants and improve their performance in large-scale applications. Additionally, understanding the mechanisms governing their interactions with biomolecules and oil-based contaminants is crucial for advancing their industrial viability. Addressing these gaps will support the broader adoption of AADES, contributing to more sustainable and effective oil purification processes while promoting environmental conservation efforts.
{"title":"Amino Acid Deep Eutectic Solvents (AADES) in Oil Purification: An Overview of Properties, Applications, and Future Directions","authors":"Muhamad Iqbal Ishak , Asiah Nusaibah Masri , Azad Anugerah Ali Rasol , Izni Mariah Ibrahim , Hasrinah Hasbullah","doi":"10.1016/j.jil.2025.100143","DOIUrl":"10.1016/j.jil.2025.100143","url":null,"abstract":"<div><div>Amino Acid Deep Eutectic Solvents (AADES) are emerging as a promising sustainable alternative to conventional organic solvents, particularly in oil purification processes. This review explores the unique properties of AADES, including their environmental benefits, biocompatibility, and high extraction efficiency. Given the limited availability of published studies specifically on AADES for oil purification, this work references research on deep eutectic solvents (DES) containing amino acids, as well as DES with mechanisms that could be applicable to AADES. The article highlights the potential role of AADES in enhancing oil purification techniques, offering a greener and more efficient approach to industrial applications. However, challenges remain, particularly regarding their scalability, long-term stability, and the lack of direct comparative studies with traditional solvents. By integrating insights from existing DES studies, this review underscores the need for further research to optimize AADES formulations for specific contaminants and improve their performance in large-scale applications. Additionally, understanding the mechanisms governing their interactions with biomolecules and oil-based contaminants is crucial for advancing their industrial viability. Addressing these gaps will support the broader adoption of AADES, contributing to more sustainable and effective oil purification processes while promoting environmental conservation efforts.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100143"},"PeriodicalIF":0.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725627","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}
GABA-based ionic liquids (ILs) and deep eutectic solvents (DESs) were synthesized and their properties compared with those of ILs and DESs with similar structures. In ILs, using GABA as the anion, [N4444][GABA], [N2224][GABA] and [N4446][GABA] in combination with ammonium, [C2mim][GABA] in combination with imidazolium and [Ch][GABA] in combination with the biological substance choline were synthesized. Among the ILs under investigation, [N2224][GABA], [N4446][GABA] and [C2mim][GABA] were liquid at room temperature. In DESs, GABA was used as the hydrogen bond donor and three GABA-based DESs were prepared by combining [Ch][Cl], [L-Car][Cl], and [DL-Car][Cl] as hydrogen bond acceptors. Among these DESs, [L-Car][Cl] : GABA (1:1) and [DL-Car][Cl] : GABA (1:1) were shown to be liquid at room temperature. Comparing the viscosities of the prepared liquids showed that DESs was significantly higher than ILs. The viscosity increase was suggested to be due to the hydrogen bond acceptors of [L-Car][Cl] : GABA (1:1) and [DL-Car][Cl] : GABA (1:1) having carboxyl groups. The toxicity of GABA-based ILs and DESs was investigated using HeLa cells, which showed that their cytotoxicity was similar to or lower than that of GABA alone in HeLa cells.
{"title":"Synthesis and properties of GABA-based ionic liquids and deep eutectic solvents","authors":"Satoshi Kitaoka , Natsuko Shimaike , Yuhei Kubo , Yukino Isshiki , Anju Furukawa , Kaoru Nobuoka","doi":"10.1016/j.jil.2025.100141","DOIUrl":"10.1016/j.jil.2025.100141","url":null,"abstract":"<div><div>GABA-based ionic liquids (ILs) and deep eutectic solvents (DESs) were synthesized and their properties compared with those of ILs and DESs with similar structures. In ILs, using GABA as the anion, [N<sub>4444</sub>][GABA], [N<sub>2224</sub>][GABA] and [N<sub>4446</sub>][GABA] in combination with ammonium, [C<sub>2</sub>mim][GABA] in combination with imidazolium and [Ch][GABA] in combination with the biological substance choline were synthesized. Among the ILs under investigation, [N<sub>2224</sub>][GABA], [N<sub>4446</sub>][GABA] and [C<sub>2</sub>mim][GABA] were liquid at room temperature. In DESs, GABA was used as the hydrogen bond donor and three GABA-based DESs were prepared by combining [Ch][Cl], [L-Car][Cl], and [DL-Car][Cl] as hydrogen bond acceptors. Among these DESs, [L-Car][Cl] : GABA (1:1) and [DL-Car][Cl] : GABA (1:1) were shown to be liquid at room temperature. Comparing the viscosities of the prepared liquids showed that DESs was significantly higher than ILs. The viscosity increase was suggested to be due to the hydrogen bond acceptors of [L-Car][Cl] : GABA (1:1) and [DL-Car][Cl] : GABA (1:1) having carboxyl groups. The toxicity of GABA-based ILs and DESs was investigated using HeLa cells, which showed that their cytotoxicity was similar to or lower than that of GABA alone in HeLa cells.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100141"},"PeriodicalIF":0.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642978","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 : 2025-03-06DOI: 10.1016/j.jil.2025.100139
Saba Goharshenas Moghadam, Gelareh Momen, Reza Jafari
This review investigates the unexplored potential of ionic liquids (ILs) and deep eutectic solvents (DESs) as innovative solutions for advancing anti-icing technologies, particularly in harsh sub-freezing conditions, with a focus on coating applications. Despite limited exploration, ILs and DESs stand out due to their remarkable properties—low melting points, excellent hydrogen-bond donor capabilities, thermal stability, and the formation of quasi-liquid layers that drastically reduce ice adhesion. While research on IL-based coatings for ice mitigation is still in its infancy, the promising synergy between DESs and ILs paves the way for creating highly effective ice-resistant surfaces. DESs, recognized for their eco-friendly and straightforward preparation, have been primarily studied for anti-freezing resilience, leaving their potential as ice growth inhibitors largely unexplored. This review presents DESs as effective ice growth inhibitors and highlights their synergistic combination with ILs, functioning as dynamic interface melting agents, for enhanced ice mitigation performance. Furthermore, the review consolidates current studies, emphasizing the need for further investigation into ILs and DESs for combating ice formation. It also proposes future research directions, such as exploring diverse IL chemistries, enhancing the stability of ILs, and investigating novel matrix materials to improve mechanical durability. The review provides a broad perspective on integrating these materials into various industrial and environmental applications, offering fresh insights into their transformative potential in anti-icing systems.
{"title":"Navigating ice-free Horizons: A Review on the Role of Ionic liquids and Deep eutectic solvents in Anti-icing Technologies","authors":"Saba Goharshenas Moghadam, Gelareh Momen, Reza Jafari","doi":"10.1016/j.jil.2025.100139","DOIUrl":"10.1016/j.jil.2025.100139","url":null,"abstract":"<div><div>This review investigates the unexplored potential of ionic liquids (ILs) and deep eutectic solvents (DESs) as innovative solutions for advancing anti-icing technologies, particularly in harsh sub-freezing conditions, with a focus on coating applications. Despite limited exploration, ILs and DESs stand out due to their remarkable properties—low melting points, excellent hydrogen-bond donor capabilities, thermal stability, and the formation of quasi-liquid layers that drastically reduce ice adhesion. While research on IL-based coatings for ice mitigation is still in its infancy, the promising synergy between DESs and ILs paves the way for creating highly effective ice-resistant surfaces. DESs, recognized for their eco-friendly and straightforward preparation, have been primarily studied for anti-freezing resilience, leaving their potential as ice growth inhibitors largely unexplored. This review presents DESs as effective ice growth inhibitors and highlights their synergistic combination with ILs, functioning as dynamic interface melting agents, for enhanced ice mitigation performance. Furthermore, the review consolidates current studies, emphasizing the need for further investigation into ILs and DESs for combating ice formation. It also proposes future research directions, such as exploring diverse IL chemistries, enhancing the stability of ILs, and investigating novel matrix materials to improve mechanical durability. The review provides a broad perspective on integrating these materials into various industrial and environmental applications, offering fresh insights into their transformative potential in anti-icing systems.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100139"},"PeriodicalIF":0.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600764","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 : 2025-03-04DOI: 10.1016/j.jil.2025.100140
Vandana Patel, Anuja Jain, Sangesh P. Zodape
The interactions of 1-Butyl-2,3-dimethylimidazolium chloride ionic liquid i.e. [BMMIm][Cl] with l-alanine as a function of temperature and concentration have been inspected. The density and speed of sound values for the [BMMIm][Cl] in different concentrations (0.05 mol·kg-1 and 0.10 mol·kg-1) of aqueous l-alanine solutions within the concentration range of 0.01 to 0.13 mol·kg-1 at T = (288.15, 293.15, 298.15, 303.15, 308.15, 313.15 and 318.15) K and atmospheric pressure have been measured. The apparent molar volume of solute, limiting apparent molar volume of solute, and transfer limiting apparent molar volume of solute for [BMMIm][Cl] in aqueous l-alanine solutions have been calculated using density data. The apparent molar isentropic compression of solute, limiting apparent molar isentropic compression of solute, and transfer limiting apparent molar isentropic compression of solute have been assessed utilizing speed of sound data. The expansivity parameter and its derivative with respect to temperature, and the pair and triplet interaction coefficients were evaluated. The findings of the study have been analyzed in terms of solute-solute and solute-solvent interactions in ternary systems.
{"title":"Molecular interactions of 1-butyl-2,3-dimethylimidazolium chloride ionic liquid in aqueous L-alanine solutions through volumetric and compressibility approaches","authors":"Vandana Patel, Anuja Jain, Sangesh P. Zodape","doi":"10.1016/j.jil.2025.100140","DOIUrl":"10.1016/j.jil.2025.100140","url":null,"abstract":"<div><div>The interactions of 1-Butyl-2,3-dimethylimidazolium chloride ionic liquid i.e. [BMMIm][Cl] with <span>l</span>-alanine as a function of temperature and concentration have been inspected. The density and speed of sound values for the [BMMIm][Cl] in different concentrations (0.05 mol·kg<sup>-1</sup> and 0.10 mol·kg<sup>-1</sup>) of aqueous <span>l</span>-alanine solutions within the concentration range of 0.01 to 0.13 mol·kg<sup>-1</sup> at <em>T</em> = (288.15, 293.15, 298.15, 303.15, 308.15, 313.15 and 318.15) K and atmospheric pressure have been measured. The apparent molar volume of solute, limiting apparent molar volume of solute, and transfer limiting apparent molar volume of solute for [BMMIm][Cl] in aqueous <span>l</span>-alanine solutions have been calculated using density data. The apparent molar isentropic compression of solute, limiting apparent molar isentropic compression of solute, and transfer limiting apparent molar isentropic compression of solute have been assessed utilizing speed of sound data. The expansivity parameter and its derivative with respect to temperature, and the pair and triplet interaction coefficients were evaluated. The findings of the study have been analyzed in terms of solute-solute and solute-solvent interactions in ternary systems.</div></div>","PeriodicalId":100794,"journal":{"name":"Journal of Ionic Liquids","volume":"5 1","pages":"Article 100140"},"PeriodicalIF":0.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686621","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 : 2025-02-25DOI: 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":"2025-02-25","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}
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":"2025-02-04","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 : 2025-02-01DOI: 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.
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