Article
Chemistry, Multidisciplinary
Jocasta Avila, Chiara Corsini, Cintia M. Correa, Martin Rosenthal, Agilio Padua, Margarida Costa Gomes
Summary: This Perspective highlights the pathways to prepare porous ionic liquids using easily accessible materials for reduced environmental impact. The study demonstrates that suspensions of porous solids are stable in eutectic mixtures, which indicates their potential in preparing porous ionic liquids. Porous ionic liquids maintain the wide electrochemical window observed in their precursor pure ionic liquids, making them suitable for green electrochemical reactions, especially those involving gases with enhanced solubility in the porous suspensions. Furthermore, their capacity as gas-rich media suggests potential sustainable biomedical and pharmaceutical applications, provided that non-toxic, biocompatible ionic liquids and porous solids are utilized.
Article
Engineering, Environmental
Honghong Wang, Shangqing Chen, Yanan Dong, Jingjing Sun, Junfeng Wang, Yi Nie
Summary: The adsorption of metal ions from the cellulose spinning process-generated [Emim]Dep solution was studied using modified molecular sieves. The smaller size of 1.6 mm showed superior removal kinetic and selectivity for metal ions. Batch adsorption experiments showed high removal ratios for K+, Ca2+, Mg2+, Cu2+ and Zn2+, and the loss ratio of [Emim]Dep was below 0.7%. Fixed-bed adsorption experiments confirmed the long-term separation performance of metal ions from [Emim]Dep aqueous solution.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Xuantong Sun, Xi Wang, Fengqiang Sun, Mingwei Tian, Lijun Qu, Patsy Perry, Huw Ovens, Xuqing Liu
Summary: A green chemistry strategy has been developed to separate and regenerate waste textiles at the molecular level, aiming to reduce the large amount of waste textiles generated by the fast fashion industry. This strategy also provides a new source of fibers to address fossil fuel reserve shortages caused by chemical fiber industries and global food shortages caused by natural fiber production.
ADVANCED MATERIALS
(2021)
Article
Biochemical Research Methods
Slavica Razic, Slobodan Gadzuric, Tatjana Trtic-Petrovic
Summary: Ionic liquids, known as designer solvents, have unique physicochemical properties and are used in sample pretreatment in analytical sciences. Validating newly proposed analytical methods using ionic liquids is crucial to demonstrate their reliability and accuracy. Additionally, this article discusses potential toxicity of ionic liquids.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Lifang Chen, Yuhang Xiong, Hao Qin, Zhiwen Qi
Summary: This review summarizes the recent progress in experimental and theoretical studies on the dehydration of carbohydrates to produce 5-hydroxymethylfurfural (HMF) using ionic liquids (ILs) and deep eutectic solvents (DESs) as catalysts or solvents. It also provides an overview of catalytic transformations of HMF to downstream products using ILs and DESs. The challenges and prospects of ILs and DESs for the production of HMF and its derivatives from biomass are discussed.
Article
Chemistry, Multidisciplinary
Mukhtiar Ahmed, Sourav Bhowmick, Andrei Filippov, Patrik Johansson, Faiz Ullah Shah
Summary: Five new ionic liquids (ILs) based on n-tetrabutylphosphonium (P-4444)(+) cation and oligoether substituted aromatic carboxylate anions were synthesized. The nature and position of the oligoether chain have an impact on thermal stability, phase behavior, and ion transport. Doping the ILs with Li-salts affects ion diffusion negatively due to stronger ionic interactions and formation of aggregates, primarily between Li+ ions and carboxylate groups of anions. The electrolytes have electrochemical stability windows up to 3.5 V, showing promise for battery applications.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Juliane Fiates, Rafael H. Ratochinski, Tuanan C. Lourenco, Juarez L. F. Da Silva, Luis G. Dias
Summary: Ionic liquids (ILs) are promising materials for high-performance electrolytes in energy storage applications due to their unique properties and high electrochemical stability. However, the strong Coulombic interactions between cations and anions in ILs result in high viscosity, limiting their applications. Weakly coordinated anions-based ILs with delocalized charges improve ionic transport. Molecular dynamics simulations and density functional theory calculations reveal that fluoroalkoxyaluminate anions promote lower lifetimes and enhance the mobility of Na' ions in ILs. Ammonium-derived ILs show good performance with a theoretical electrochemical stability window above 5.0 eV.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Applied
Yi Zhang, Weidong Guo, Donghao Liu, Jie Xu
Summary: The novel ionic liquids synthesized in this study show excellent extractability and selectivity for Nd(III) and Sc(III), as well as outstanding separation properties between rare-earth and first row transition-metal ions. The extraction mechanism indicates that the rare-earth complex extracted in the ionic liquid phase is structurally similar to those obtained with neutral extractants, providing a new approach for the future recycling of rare-earth metals.
JOURNAL OF RARE EARTHS
(2021)
Article
Chemistry, Multidisciplinary
Jun Zhang, Zhanying Chen, Yan Zhang, Shengyi Dong, Yufang Chen, Shiguo Zhang
Summary: By introducing alkoxy moieties into poly(ionic liquid)s, highly efficient adhesives with strong hydrogen bonding interactions can be designed, exhibiting excellent adhesive properties on various substrates. Furthermore, photosensitive or electronically conductive composite adhesives can be fabricated by utilizing the compatibility between ionic liquids and carbon nanotubes or silver nanofibers.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Chi Zhang, Meiling Shao, Dongqing Wu, Zhongyi Li, Muzhi Zhao, Xiangfei Zhang, Bin Zhai, Yunjun Luo, Xiaoyu Li
Summary: In this study, two novel azide ionic liquids (AILs) were designed and synthesized for highly efficient azidation reactions of polymers under mild conditions. Compared with traditional methods, both AILs exhibited higher reaction rates and better functional group tolerance, and they could also serve as both reagents and solvents. Theoretical simulations revealed that the excellent performance of AILs was attributed to the presence of ion pairs and the crucial role of E3 moieties. Additionally, the AILs could be easily regenerated after the reaction, providing a safer, greener, and more efficient synthesis route for azide polymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Fei Ren, Jinwei Wang, Jinglin Yu, Cheng Zhong, Fengwei Xie, Shujun Wang
Summary: This study demonstrates the synthesis of acetylated maize starches (AMS) with different degrees of substitution (DS) in the presence of ionic liquids (ILs) without catalyst. The DS and reaction efficiency of AMS increase with decreasing alkyl chain length of cations or anions. AMS synthesized in imidazolium-based ILs exhibit higher hydrophobicity and thermal stability. The viscosity of ILs and the interactions between acetic anhydride molecules are crucial for the acetylation of starch.
CARBOHYDRATE POLYMERS
(2022)
Article
Engineering, Chemical
Dorota Babilas, Anna Kowalik-Klimczak, Piotr Dydo
Summary: This study investigated the applicability of electrodialysis for concentration and recovery of aprotic imidazolium ionic liquids. A 2.5-fold concentration of 1-butyl-3-methylimidazolium chloride with a recovery of 86.9% and current efficiency of 92.8% was achieved using heterogeneous membranes. Surface changes were observed in homogeneous membranes, but not in heterogeneous membranes during and after electrodialysis.
DESALINATION AND WATER TREATMENT
(2021)
Article
Chemistry, Physical
Ci Jin, Muhan Chen, Mei Fan, Guoting Luo, Min Shao, Zhangjie Huang, Xiaoguang Xie
Summary: In this study, three novel phosphonium-based ILs were synthesized and successfully used for the recovery of Pd(II) from alkaline cyanide solutions, achieving an extraction percentage of greater than 99.0%. Furthermore, the TOUPB system exhibited excellent selectivity in a mixed solution and maintained a Pd(II) recovery percentage greater than 90.0% after five consecutive extraction-stripping cycles.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Xia Zhao, Zhi Wang, Xiujuan Qi, Siwei Song, Shi Huang, Kangcai Wang, Qinghua Zhang
Summary: Six new energetic complexes with good thermal stabilities and excellent specific impulses were synthesized and characterized in this study. They exhibited great potential as promoters for the development of green hypergolic bipropellants, showing high catalytic activity and short ignition delay time in hypergolic reactions. Their isostructural characteristics also made them ideal candidates for studying structure-performance relationships.
INORGANIC CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Ichiro Imae, Hiroki Uehara, Keiichi Imato, Yousuke Ooyama
Summary: The study focused on synthesizing freestanding PEDOT: PSS films modified with an ionic liquid, which were found to exhibit high mechanical strengths and hydrophobicity. The thermoelectric properties of these films were dependent on the amount of IL incorporated, with further analysis conducted on the composition, higher-order structures, and electronic states of the polymer films. Additionally, the correlation between carrier density in the polymer film and thermoelectric conversion properties was investigated using electrochemical techniques.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Kyung Lee Park, Jun Won Baek, Seung Hyun Moon, Sung Moon Bae, Jong Chul Lee, Junseong Lee, Myong Sun Jeong, Bun Yeoul Lee
Article
Polymer Science
Jong Chul Lee, Kyung Lee Park, Sung Moon Bae, Hyun Ju Lee, Jun Won Baek, Junseong Lee, Seokpil Sa, Eun Ji Shin, Ki Soo Lee, Bun Yeoul Lee
Article
Polymer Science
Doo Yeon Kwon, Joon Yeong Park, Bun Yeoul Lee, Moon Suk Kim
Article
Chemistry, Physical
Jun Won Baek, Young Bin Hyun, Hyun Ju Lee, Jong Chul Lee, Sung Moon Bae, Yeong Hyun Seo, Dong Geun Lee, Bun Yeoul Lee
Article
Biochemistry & Molecular Biology
Dong Geun Lee, Jun Won Baek, Jung Hyun Lee, Hyun Ju Lee, Yeong Hyun Seo, Junseong Lee, Chong Gu Lee, Bun Yeoul Lee
Summary: In this study, a well-defined form of the THF adduct of CrCl3 was disclosed, which enabled structure determination by X-ray crystallography. The catalyst prepared using this material as a starting material exhibited reliably high activity. Single crystals of complex compounds were successfully obtained using this well-defined Cr source, allowing structure determination by X-ray crystallography, which was unsuccessful when impure CrCl3(thf)(3) was used.
Article
Chemistry, Physical
Karol Dyduch, Aleksandra Roznowska, Monika Srebro-Hooper, Bun Yeoul Lee, Artur Michalak
Summary: Density Functional Theory calculations were used to investigate the binding and ring-opening reaction of propylene oxide with a CO2/epoxide copolymerization catalyst. The results showed that the ring-opening of PO proceeds preferentially in the trans catalyst configuration, with a preference for (R)-PO ring-opening over (S)-PO ring-opening. The orientation of the N+-chains in the real catalyst plays a key role in the stereoselectivity of the reaction.
Article
Biochemistry & Molecular Biology
Hyun-Ju Lee, Jun-Won Baek, Yeong-Hyun Seo, Hong-Cheol Lee, Sun-Mi Jeong, Junseong Lee, Chong-Gu Lee, Bun-Yeoul Lee
Summary: In this study, highly pure and soluble ammonium tetrakis(pentafluorophenyl)borates were prepared via acid-base reaction and used in the activation reactions of homogeneous olefin polymerization catalysts. These soluble and stable species were highly active in ethylene/1-octene copolymerization in aliphatic hydrocarbon solvents.
Article
Chemistry, Physical
Jung Hyun Lee, Jun Won Baek, Dong Geun Lee, Ji Hyeong Ko, Kye Sung Cho, Jin Woo Lee, Bun Yeoul Lee
Summary: Efforts to achieve on-purpose 1-octene production have been successful through the development of a series of novel bis(phosphine) ligands, combined with appropriate Cr catalysts and additives. The newly synthesized Cr complex 3 exhibited the highest activity and 1-octene selectivity while mitigating undesired > C10 fractions effectively.
Article
Chemistry, Multidisciplinary
Yeong Hyun Seo, Yong Bin Hyun, Hyun Ju Lee, Jun Won Baek, Hong Cheol Lee, Jung Hyun Lee, Junseong Lee, Bun Yeoul Lee
Summary: The synthesis of H3Co(CN)(6) on a 100 g scale was completed and its structure was confirmed using X-ray crystallography. Double-metal cyanide complexes (DMCs) prepared with H3Co(CN)(6) showed good activity in PO homopolymerization, but lower productivity was observed under CO2 pressure with the generation of cyclic carbonates. The addition of starters deteriorated catalytic performance by increasing the generation of cyclic carbonates.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Physical
Sun Mi Jeong, Ju Yong Park, Yong Bin Hyun, Jun Won Baek, Hagjun Kim, Yeokwon Yoon, Sangchul Chung, Junseong Lee, Bun Yeoul Lee
Summary: We synthesized a series of Me2Si-bridged ansa-zirconocene complexes and used them for the preparation of supported catalysts. We found that the fluorenyl ligand adopts an eta(3)-binding mode and synthesized derivatives by substituting the ligand and bridge. The supported catalysts showed higher catalytic activity in copolymerization, producing polymers with lower bulk density.
Article
Chemistry, Multidisciplinary
Hyun Ju Lee, Woo Yeon Cho, Hong Cheol Lee, Yeong Hyun Seo, Jun Won Baek, Pyung Cheon Lee, Bun Yeoul Lee
Summary: In this study, we demonstrate the preparation of polyesters with enhanced biodegradability through a combination of old controversial macromolecules and aggregate theories. The prepared ionic aggregates of polyesters show much faster biodegradation than conventional polyesters under controlled soil conditions, while maintaining comparable or superior rheological and mechanical properties.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Inorganic & Nuclear
Jun Won Baek, Ji Hyeong Ko, Jun Hyeong Park, Ju Yong Park, Hyun Ju Lee, Yeong Hyun Seo, Junseong Lee, Bun Yeoul Lee
Summary: In this study, selective alpha-olefin trimerization catalysts were developed by modifying the Chevron-Phillips ethylene trimerization catalytic system. These catalysts demonstrated high turnover numbers and were able to selectively generate trimers, improving the viscosity index of lubricant base oils.
Article
Chemistry, Inorganic & Nuclear
Yongmoon Yang, Jong Doo Lee, Yeong Hyun Seo, Ju-Hyung Chae, Sohee Bang, Yeon-Joo Cheong, Bun Yeoul Lee, In-Hwan Lee, Seung Uk Son, Hye-Young Jang
Summary: This study presents a new approach to enhance the catalytic activity in CO2 polymerization by using two-dimensional (2D) ZnGA. A porous granular Co-modified ZnGA (Co-ZnGA) was prepared by treating morphology-controlled 2D ZnGA with H3Co(CN)(6). Co-ZnGA exhibited significant catalytic activity in copolymerization of various epoxides and CO2.
DALTON TRANSACTIONS
(2022)
Article
Biochemistry & Molecular Biology
Bo Hyun Choi, Hee Jin Hwang, Ji Eun Lee, Soon Hwan Oh, Jae Sung Hwang, Bun Yeoul Lee, Pyung Cheon Lee
Article
Polymer Science
Seung Hyun Moon, Kyung Lee Park, Jun Won Baek, Hyun Ju Lee, Ji-Hwan Choi, Yeonju Lee, Bun Yeoul Lee
JOURNAL OF POLYMER SCIENCE
(2020)
