Article
Chemistry, Multidisciplinary
John Brown, Juan Forero-Saboya, Benoit Baptiste, Martin Karlsmo, Gwenaelle Rousse, Alexis Grimaud
Summary: This study investigates a design principle for aqueous battery electrolytes by combining chaotropic ions and imide anions to form GdmTFSI salt. The study reveals that GdmTFSI salt disrupts the hydrogen bonding network of aqueous solutions, reducing water reactivity and expanding the electrochemical stability window.
CHEMICAL COMMUNICATIONS
(2023)
Article
Spectroscopy
Satyen Saha, Abhineet Verma, Krishanu Bandyopadhyay
Summary: This study presents the application of Raman spectroscopy in studying ionic liquid systems containing water. The presence of water can have intentional or unintentional effects on the physical and chemical properties of ILs, making it crucial to not only identify but also understand the role of water. It is evident from this review that Raman spectroscopy has greatly aided in understanding the IL/water mixture at the molecular level.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Engineering, Environmental
Ye Hu, Zhongdong Gan, Shixian Xin, Wenhui Fang, Min Li, Yanlei Wang, Wei Cui, Hong Zhao, Zengxi Li, Xiangping Zhang
Summary: Ionic liquids (ILs) have advantages in improving the Faradaic efficiency (FE) and current density of electrochemical CO2 reduction (ECR). In this study, in situ shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) was used to investigate the ECR process on nickel foam (NF) in imidazolium ILs. The results showed that 1-Butyl-3-methylimidazolium chloride (BmimCl) exhibited the best performance with a high FE of CO (94.6%) and a considerable current density (72 mA cm-2). The study provided promising insights into the CO2 electroreduction mechanism in ILs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Kazuki Yoshii, Takuya Uto, Takakazu Onishi, Daichi Kosuga, Naoki Tachikawa, Yasushi Katayama
Summary: This study investigated the physicochemical properties of room temperature ionic liquids (RTILs) with different ether oxygen atoms through experimental and computational approaches. The results show that the position and number of ether oxygen atoms have a significant impact on the viscosity and transport properties of RTILs, providing valuable insights for the design of functionalized RTILs for various applications.
Article
Chemistry, Multidisciplinary
Ramavath Babu, Govindugari Bhargavi, Melath V. Rajasekharan
Summary: Five new polybromide compounds with tris-chelates of 1,10-phenanthroline and 2,2-bipyridine as counter cations are reported. These compounds are obtained through self assembly in solution using divalent transition metal bromides and bromine as starting materials. Different structural features and properties of these compounds, including the use of bromine as a tribromide precursor and oxidising agent, are described.
Article
Biochemistry & Molecular Biology
Oriele Palumbo, Annalisa Paolone, Frederik Philippi, Daniel Rauber, Tom Welton
Summary: This study investigates the impact of ionic liquid (ILs) design on the mechanical properties and ion dynamics of ILs, while considering the relationships between different mechanical and transport properties. The mechanical properties of quaternary ILs with rigid anions are studied using Dynamical Mechanical Analysis (DMA), and the results are compared with rheological and transport properties measured through viscosity, conductivity, and diffusion coefficient measurements. The temperature dependence of different variables is well described by the Vogel-Fulcher-Tammann model. The occurrence of a relaxation process in the mechanical spectra of all measured liquids is attributed to a diffusive process when the ion dynamics are not affected by fast structural reorganization of flexible anions at a local level.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
T. M. Cassol, A. R. Duarte, C. S. Ribas, P. R. G. Fernandes
Summary: Broadband Dielectric Spectroscopy (BDS) technique was applied to investigate two ionic liquids, MC1 and MC2, analyzing the variations of complex permittivity and complex conductivity with temperature. The results provide insights into the electrical properties of ionic liquids at different temperatures.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Olga D. Bakulina, Mikhail Yu. Ivanov, Sergey A. Prikhod'ko, Nicolay Yu. Adonin, Matvey V. Fedin
Summary: Ionic liquids (ILs) can form various nanostructures due to their amphiphilic nature. In this study, we investigate the structural anomalies in zwitterionic IL glasses (ZILs), where the cation and anion are bound in a single molecule. The binding restricts mutual diffusion of cations and anions, leading to modification of nano-ordering and structural anomalies compared to common ILs. This work expands the understanding of structural anomalies in IL glasses and suggests new routes to tune their properties.
Article
Chemistry, Multidisciplinary
Nils Schopper, Johannes Landmann, Jan A. P. Sprenger, Ludwig Zapf, Ruediger Bertermann, Nikolai V. Ignat'ev, Maik Finze
Summary: A set of easily synthesized mixed-substituted potassium alkylcyano- and alkylcyanofluoroborates were characterized by various spectroscopic techniques and single-crystal X-ray diffraction. The physicochemical properties of the resulting 1-ethyl-3-methylimidazolium room temperature ionic liquids (RTILs) with the new borate anions were compared to related RTILs, demonstrating high stability, low viscosity, and high conductivity. The study also highlighted the potential of fluorine-free borate anions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yuval Simha, Gil Daniels, Amalya Goldman, Elihay Kuniavsky, Dmitry Tsvelikhovsky
Summary: A new strategy for direct access to fully substituted polycyclic imidazolium salts using alpha-enaminones and proline as the reagents is reported. This open-flask operation is a catalyst-, metal-, and Lewis acid-free green process, which does not require an ion-exchange step. It can produce good yields with minimal formation of side products, and is not limited to aryl substituents.
Review
Biochemistry & Molecular Biology
Claudia C. L. Pereira, Jose M. Carretas, Bernardo Monteiro, Joao P. Leal
Summary: The manuscript explores the use of europium as the best lanthanide for luminescent applications, while also highlighting the potential importance of other lanthanides. Future research trends may focus on areas such as ionogels.
Article
Chemistry, Inorganic & Nuclear
Tim Kuellmey, Mohammad R. Ghazanfari, Robert Burda, Elena Voloshina, Clara A. von Randow, Friederike Fuss, Moritz Liesegang, Beate Paulus, Ann-Christin Poeppler, Guenther Thiele
Summary: Anionic lithium-containing species known as inolithates, comprising [LiCl2](-) and [Li2Cl3](-) polyanions, have been isolated for the first time from ionothermal reactions. These compounds are of interest for potential applications in electrochemical lithium-based systems and are considered intermediates in ionic liquid applications. The structures and formation mechanism of inolithates are discussed in depth, highlighting the absence of covalent bonding in the anionic moieties.
INORGANIC CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Riki Subagyo, Pramitha Y. D. Maulida, Dominik Kowal, Sri Hartati, Rossyaila M. Muslimawati, Yulfi Zetra, Lina J. Diguna, Syafsir Akhlus, Muhammad H. Mahyuddin, Lei Zhang, Chi S. Tang, Caozheng Diao, Andrew T. S. Wee, Muhammad D. Birowosuto, Andrivo Arramel, Andrivo Rusydi, Yuly Kusumawati
Summary: In this study, low-dimensional hybrid organic-inorganic perovskites were successfully designed and synthesized by selecting specific ionic liquid components. The characteristics of electronic interactions and optical responses were revealed using X-ray absorption spectroscopy measurements and photoluminescence spectroscopy.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Geeta Durga, Pooja Kalra, Vinay Kumar Verma, Kanjur Wangdi, Anuradha Mishra
Summary: Ionic liquids have established themselves as a preferred solvent in synthetic chemistry, particularly in polymer chemistry. They are versatile solvents used for polymeric reactions and can also be polymerized to enhance their inherent properties, finding applications in various fields such as electrochemical devices, nanocomposites, optoelectronics, and more. This comprehensive review covers both aspects of ILs as a solvent in polymeric reactions and their polymeric form, poly(ionic liquids), presenting their diverse potential applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Cettina Bottari, Sara Catalini, Paolo Foggi, Ines Mancini, Andrea Mele, Diego Romano Perinelli, Alessandro Paciaroni, Alessandro Gessini, Claudio Masciovecchio, Barbara Rossi
Summary: Hydrated ionic liquids (ILs) have been found to enhance the structural stability of DNA. The cations and anions of ILs strongly interact with the DNA structure, affecting the melting process but not perturbing the pre-melting transition. The dominant interaction occurs between the imidazolium cation and the guanine and thymine bases in DNA structure.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Crystallography
Owen J. Curnow, Chaminda D. Jayasinghe, Matthew I. J. Polson, Ruhamah Yunis
JOURNAL OF CHEMICAL CRYSTALLOGRAPHY
(2020)
Article
Chemistry, Multidisciplinary
Mohammed S. Abdelbassit, Owen J. Curnow, Manuel Ferreras, Deborah L. Crittenden
Article
Chemistry, Inorganic & Nuclear
Mohammed S. Abdelbassit, Owen J. Curnow, Samuel J. Brooke, Mark R. Waterland
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2020)
Article
Engineering, Manufacturing
Anton Baranov, Friederike Sommerhoff, Benoit Duchemin, Owen Curnow, Mark P. Staiger
Summary: The potential of using aqueous solutions containing TBPH for synthesizing ACCs has been explored. ACC laminates are prepared by partially dissolving cellulose II textile and then regenerating it to reform a cellulose II matrix phase, bonding the original undissolved fibers. The solvent concentration affects the microstructure, crystallinity, and tensile properties of ACCs, with TBPH enabling faster processing and improved control over properties.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Multidisciplinary
Owen J. Curnow
Summary: This method simplifies the process of determining Lewis electron dot structures and formal charges, allowing students to focus more on the chemical aspects of decision making.
JOURNAL OF CHEMICAL EDUCATION
(2021)
Article
Chemistry, Physical
Owen J. Curnow, Deborah L. Crittenden
Summary: This study investigated the deperturbation of Fermi-coupled bands in molecular vibrational spectra, revealing that the results obtained using bright-state models are significantly higher than estimations from experimental data. This indicates that the importance of anharmonic couplings in intensity distributions has not been fully considered in the bright-state model.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Applied
Xuemin Li, Shang-Tien Tsai, Kevin C-W Wu, Owen J. Curnow, Jungkyu Choi, Alex C. K. Yip
Summary: By using different structure-directing agents and crystallization methods, it is possible to adjust the particle size of zeolites, obtain zeolites with different morphologies, and evaluate their selectivity in toluene methylation reactions.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Owen J. Curnow, Deborah L. Crittenden
Summary: This review describes and evaluates known solid-state examples of discrete halide hydrates. Most of them are chloride hydrates, with dihalides being the most common discrete clusters in the solid state. However, mono- or multi-halide species are rarely found. On the other hand, polymeric chloride hydrates mostly have 2D layered structures. It is observed that there is a gap in the chloride:water ratio between 8-20 waters per chloride. Different types of halide hydrates are identified, including isolated clusters, 2D layers, and 3D semiclathrates. The only species found in both the solid state and gas phase is [Cl(H2O)](-), which also has a free OH group. The distinctive infrared spectra in the nu(OH) region serve as a useful tool for identification. The agreement between computed gas phase structures and experimentally-observed solid state structures and their vibrational spectra provides confidence that discrete halide hydrate species in the solid state offer insight into the structural motifs of halide hydrates in solution, particularly microsolvated ion-pairs.
Article
Chemistry, Multidisciplinary
Owen J. Curnow, Rathiga Senthooran
Summary: A series of highly-fluorinated triaminocyclopropenium salts were prepared and their properties as ionic liquids were investigated. Different cations were obtained by reacting pentachlorocyclopropane or tetrachlorocyclopropene with bis(2,2,2-trifluoroethyl)amine and a trialkylamine. The salts were characterized by thermal measurements, solubility properties, density, viscosity, and conductivity, and X-ray diffraction studies showed the formation of fluorous and hydrophilic regions.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
X. Li, T. -h. Li, W. Zhou, Y. -p. Li, P. H. -L. Sit, Z. Wu, O. J. Curnow, K. C. -W. Wu, J. Choi, A. C. K. Yip
Summary: This study elucidated the impact of tetraethyl orthosilicate (TEOS) hydrolysis on the final zeolite phase selectivity in the synthesis of 10-membered ring zeolites. The dissolved silica concentration in the synthesis solution, controlled by varying TEOS hydrolysis temperature and addition rate, induced heterogeneous nuclear growth and influenced the formation of MFI and TON zeolites. These results provide valuable insights into the nucleation mechanism in zeolite crystallization.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Mohammed S. Abdelbassit, Owen J. Curnow, Mark R. Waterland
Summary: A series of salts with a diaminohalocyclopropenium cation and halide anion were synthesized and characterized. The interaction between the cation and the halide anion involved strong halogen bonding and hydrogen bonding. The geometries formed by the halide ions exhibited pyramidal structures with approximately orthogonal angles.
HELVETICA CHIMICA ACTA
(2023)
Article
Thermodynamics
Swathy Akhil, Owen J. Curnow, Kelvin J. Walst, Ruomeng Wang, Ruhamah Yunis
Summary: A selection of triaminocyclopropenium cations with various anions have been prepared and characterized. The salts exhibit different properties in ionic liquid applications at different temperature ranges and have different miscibility/solubility in various solvents.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2022)
Article
Chemistry, Physical
Owen J. Curnow, Rathiga Senthooran, Anthony E. Somers
Summary: Six new tris(dialkylamino)cyclopropenium dialkylphosphate ionic liquids (ILs) were synthesized and characterized as potential lubricants. The thermophysical and thermochemical properties, including viscosity, density, conductivity, miscibility, thermal stability, and phase transitions, were investigated. It was found that [C-3(NHex(2))(3)]BEHP exhibited significantly less wear for pin-on-disk test conditions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Owen J. Curnow, Rathiga Senthooran
Summary: In this study, five new salts containing the triaminocyclopropenium (TAC) cation and Keggin polyoxometalate (POM) were synthesized to investigate the impact of combining TAC cations with POMs on their thermochemical and thermophysical properties. It was found that the tetra-anionic salts had lower and similar melting points (around 82°C) despite the increased electrostatic charge, compared to the tri-anionic salts with higher melting points (140°C and 129°C). The solid-state structures were similar, but the tetra-anionic salts had a double layer of cations, which likely caused the lower and similar melting points and increased solubility in non-polar solvents. The salts were characterized using various techniques including TGA, DSC, solubility studies, X-ray crystallography, NMR, and infrared spectroscopy.
