Article
Chemistry, Multidisciplinary
Qingning Yang, Xiyi Li, Lu Chen, Xiaoyu Han, Feng Ryan Wang, Junwang Tang
Summary: This study presents a heterogeneous photocatalyst (Cu/ZnO) for efficient C-C coupling of benzyl chloride with high selectivity and yield at room temperature. The reaction showed excellent stability even after 8 cycles. The enhanced adsorption, stabilization of intermediates, and charge separation/transfer contributed to the improved performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Biochemistry & Molecular Biology
Mayar W. Aly, Friedrich-Alexander Ludwig, Winnie Deuther-Conrad, Peter Brust, Ashraf H. Abadi, Rares-Petru Moldovan, Noha A. Osman
Summary: The study focuses on developing highly potent and selective CB2 ligands for potential use in PET imaging, with compounds showing promising CB2 over CB1 selectivity. The fluorinated and methoxylated benzothiazole derivatives exhibited subnanomolar CB2 Ki values and exceptional metabolic stability in liver microsomes, suggesting their potential as PET tracers.
BIOORGANIC CHEMISTRY
(2021)
Article
Chemistry, Medicinal
Yi-Xian Li, Jun-Zhe Wang, Yuna Shimadate, Maki Kise, Atsushi Kato, Yue-Mei Jia, George W. J. Fleet, Chu-Yi Yu
Summary: A series of C-6 fluorinated casuarine derivatives have been synthesized, and their structure-activity relationship has been studied using glycosidase assays and molecular docking calculations. Introduction of fluorine atom(s) at C-6 position increases the specificity of the derivatives towards amyloglucosidase, and the configuration of C-6 fluorine affects the inhibitory activity.
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Fudan Feng, Siyun Zhang, Lei Yang, Guang Li, Weiwei Xu, Haonan Qu, Jin Zhang, Manivannan Kalavathi Dhinakaran, Chuanlai Xu, Jing Cheng, Haibing Li
Summary: The study focuses on developing a high-enantioselective microchannel membrane by incorporating chiral gold nanoparticles. The results show improved enantioselectivity, making it advantageous for chiral separation compared to nanochannel membranes reported in the literature.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Applied
Toru Murayama, Satoshi Ishikawa, Norihito Hiyoshi, Yoshinori Goto, Zhenxin Zhang, Takashi Toyao, Ken-ichi Shimizu, Shutoku Lee, Wataru Ueda
Summary: The high dimensionally structured W-V-O catalysts (HDS-WVO) synthesized by hydrothermal method showed excellent catalytic performance for the selective oxidation of toluene to benzoic acid. The Cs+ ion exchange significantly decreased the catalytic activity of HDS-WVO, indicating that toluene oxidation takes place at the heptagonal channel site.
Article
Energy & Fuels
Makoto Shimizu, Tomoya Furuhashi, Zhen Liu, Hiroo Yugami
Summary: This study investigates the high efficiency in solar thermophotovoltaic (TPV) systems. By recycling photons and combining spectrally selective absorbers and emitters, the system achieves a higher efficiency compared to other cases.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Multidisciplinary
Souha Kacem, Yunxiang Qiao, Cornelia Wirtz, Nils Theyssen, Alexis Bordet, Walter Leitner
Summary: The selective hydrogenation of fluorinated arenes with polar functionalities provides a versatile pathway for the synthesis of valuable substituted fluorocyclohexane derivatives. The use of supercritical carbon dioxide (scCO(2)) as a hydrophobic and green solvent, in combination with Rh nanoparticles immobilized on molecularly modified silica as catalysts, favors hydrogenation over hydrodefluorination. This approach compares favorably to traditional synthetic routes in terms of green chemistry metrics, as demonstrated for the synthesis of 4-fluorocyclohexan-1-ol, a useful building block.
Article
Nanoscience & Nanotechnology
Seong Jae Yoo, Ji Eun Kang, You Jin Ji, Hyun Woo Tak, Byeong Ok Cho, Young Lae Kim, Ki Chan Lee, Jin Sung Chun, Yongil Kim, Dong Woo Kim, Geun Young Yeom
Summary: In this study, isotropic dry etching characteristics of SiNx and SiO2 using ClF3/Cl-2 remote plasmas were investigated. Increasing the Cl-2 percent in the ClF3/Cl-2 gas mixture increased the etch selectivity of SiNx over SiO2 while decreasing the etch rate of SiNx. By adding 15% Cl to ClF3/Cl-2, an etch selectivity higher than 500 could be achieved with a SiNx etch rate of around 8 nm min(-1), and increasing the Cl percent to 20% further increased the etch selectivity to higher than 1000.
Article
Materials Science, Multidisciplinary
Adrian Hernandez, Naveen Harindu Hemasiri, Samrana Kazim, Javier Ortiz, Shahzada Ahmad, Angela Sastre-Santos
Summary: Four symmetrically substituted and four asymmetrically substituted fluorinated and non-fluorinated-diarylamine CuPcs and ZnPcs were used as hole transporting materials in perovskite solar cells. The correlation between electronic structure, charge mobility parameters, core metal, and substituents in metal phthalocyanines was established. The best power conversion efficiency of 15.40% was achieved by the fluorinated asymmetrically substituted undoped ZnPc-6.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Inorganic & Nuclear
Cuixia Cheng, Fang Chen, Huiyang Yi, Yinfang Cheng, Guosong Lai
Summary: Nickel bicarbonate Ni(HCO3)(2) spheres were successfully prepared via a one-step hydrothermal route, and their electrochemical performance in lithium-ion batteries and supercapacitors was significantly enhanced. The results suggest a strong potential for applications in energy storage devices.
DALTON TRANSACTIONS
(2021)
Article
Spectroscopy
Jing Ren, Wenxin Wu, Tongyao Chen, Hengyao Guo, Changlin Xu, Jing Ma, Lingna Wang, Jingfang Wang, Lin Li
Summary: Excessive uptake of Co2+ is harmful to health. A new poly-ethylenimine protected copper nanocluster can be used for specific detection of Co2+ with excellent performance and low toxicity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Engineering, Chemical
Gizem Cihanoglu, Ozgenc Ebil
Summary: Copolymer thin films of V4D4, PFHEA, and PFEMA synthesized via iCVD show promise as potential candidates for gas diffusion layers in metal-air batteries. These films exhibit high water vapor transmission rate and oxygen diffusion, leading to higher oxygen reduction current densities and oxygen diffusion properties in the fabricated GDEs.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Medicinal
Qunshou Kong, Gaocan Li, Fanjun Zhang, Tao Yu, Xiaotong Chen, Qing Jiang, Yunbing Wang
Summary: Antibiotic resistance is a major global health threat. This study presents a charge-dispersed dimerization strategy to enhance the selectivity between prokaryotic microbes and eukaryotic cells for antimicrobial peptide mimics.
JOURNAL OF MEDICINAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Peng Wang, Huibing Shi, Baolin Feng, Deming Zhao, Da Yang
Summary: This study investigates the Rh-catalyzed hydroformylation of various olefins using triethylamine (Et3N) as an additive in the presence of different reaction parameters. The results show that the addition of Et3N in the [Rh(cod)Cl]2/PPh3 catalytic system improves the conversion of substrates (up to 99%) and the chemo/regioselectivity of the products (up to 99%), and widens the applicability for the synthesis of important aldehydes. Moreover, the catalytic system can be recycled more than 7 times and provides a new method for the synthesis of pesticide dinotefuran and perfume Lily aldehyde intermediates.
MOLECULAR CATALYSIS
(2023)
Article
Multidisciplinary Sciences
Wei Zhou, Aimin Li, Min Zhou, Yiyao Xu, Yi Zhang, Qing He
Summary: This study reports the synthesis of two covalent organic superphane cages, which serve as nonporous amorphous superadsorbents for aqueous iodine adsorption. These cages exhibit record-breaking iodine adsorption capability and selectivity, even in the presence of competing anions. They can remove trace iodine in aqueous media from ppm level down to ppb level concentration.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Josef Hamacek, Jan Sokolov, Vladimir Sindelar
Summary: Bambusurils can be used for tuning and characterizing supramolecular systems by acting as anion scavengers in metal-mediated self-assemblies. They can manipulate the subtle equilibria in the system, trigger the self-assembly process, and enhance specific interactions between components. Bambusuril has the ability to selectively remove coordinating anions from mixtures, enabling regenaration of the supramolecular structure.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Editorial Material
Chemistry, Physical
Tiddo Jonathan Mooibroek, Steve Scheiner, Hennie Valkenier
Article
Chemistry, Multidisciplinary
Luis Martinez-Crespo, Sarah H. Hewitt, Nicola Alessandro De Simone, Vladimir Sindelar, Anthony P. Davis, Stephen Butler, Hennie Valkenier
Summary: This study presents a new method for monitoring the kinetics of bicarbonate transport using an encapsulated europium(III) complex. By distinguishing different mechanisms involved in bicarbonate transport, it provides new insights for future research on bicarbonate transporters.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Editorial Material
Chemistry, Multidisciplinary
Luis Martinez-Crespo, Sarah H. Hewitt, Nicola Alessandro De Simone, Vladimir Sindelar, Anthony P. Davis, Stephen Butler, Hennie Valkenier
Summary: The cover of this issue features the transport of bicarbonate anions across the lipid bilayer of a liposome, contrasting with the spontaneous diffusion of CO2.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Organic
Marketa Kandrnalova, Vladimir Sindelar
Summary: The study focused on the host-guest properties of monofunctionalized cucurbiturils in water and NaCl, with cucurbit[6]uril 2 self-associating into dimeric aggregates in water but readily disassembling in the presence of NaCl or organic cations.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Arico Del Mauro, Zoran Kokan, Vladimir Sindelar
Summary: Bambusuril-based [1]rotaxanes were formed quantitatively using a reversible covalent bond and host-guest anion recognition. These novel [1]rotaxanes exhibited a dynamic nature, facilitating carboxylate component exchange reactions in acetonitrile.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Petra Itterheimova, Johan Bobacka, Vladimir Sindelar, Premysl Lubal
Summary: A solid-contact ion-selective electrode (ISE) using Bn12BU[6] and PEDOT has been developed for the determination of perchlorate concentration. The electrode showed rapid response, high stability, and sufficient selectivity to other common inorganic anions.
Article
Chemistry, Organic
Nicola Alessandro De Simone, Matus Chvojka, Jana Lapesova, Luis Martinez-Crespo, Petr Slavik, Jan Sokolov, Stephen J. Butler, Hennie Valkenier, Vladimir Sindelar
Summary: This article presents the preparation of two monofunctionalized bambusurils and their conjugation with crown ether and cholesterol units. The resulting conjugates were successfully tested for liquid-liquid extraction and ion transport across lipid bilayers.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Luis Martinez-Crespo, Hennie Valkenier
Summary: The development of synthetic anion transporters for the treatment of diseases caused by deficient anion transport has potential applications. This overview of synthetic receptors used as bicarbonate transporters discusses various assays for transport studies and highlights the most active transporters. Mechanistic studies, as well as studies in cells and tissues, are also addressed, along with the key challenges for the further development of bicarbonate transporters.
Article
Chemistry, Multidisciplinary
Alessio Cataldo, Karolis Norvaisa, Lau Halgreen, Samantha E. Bodman, Kristin Bartik, Stephen J. Butler, Hennie Valkenier
Summary: A neutral receptor capable of transporting phosphate ions across lipid membranes has been discovered, opening possibilities for the development of transporters for various biological phosphates.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Alessio Cataldo, Matus Chvojka, Gyeongjin Park, Vladimir Sindelar, Francois P. Gabbai, Stephen J. Butler, Hennie Valkenier
Summary: Here we introduce a novel approach using a europium(iii) complex to monitor the transmembrane transport of fluoride into liposomes. By utilizing the long emission lifetime of this probe, we are able to accurately measure the transport activity of fluorescent transporters. The high sensitivity, selectivity, and versatility of this assay enable us to investigate various types of fluoride transporters and unravel their mechanisms of action.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Jan Sokolov, Vladimir Sindelar
Summary: Supramolecular self-assembly in water, leading to polymeric structures, has potential applications in biology and medicine. In this study, we report the self-association of host molecules based on glycoluril dimers into linear oligomers in water. The polymerization degree of the resulting supramolecular aggregates was calculated using the isodesmic model and Carothers equation. A model compound was prepared for a better understanding of the forces responsible for the self-association of glycoluril dimer-based monomers in water.
CHEMISTRY-SWITZERLAND
(2022)
Article
Chemistry, Organic
Krystyna Maslowska-Jarzyna, Alessio Cataldo, Anna Marszalik, Ilona Ignatikova, Stephen J. Butler, Radoslaw Stachowiak, Michal J. Chmielewski, Hennie Valkenier
Summary: This study investigated the transport of bicarbonate and chloride ions by carbazoles with two amido/thioamido groups using a bicarbonate-sensitive probe. The researchers found a significant concentration dependence of the transporters. Based on insights into anion transport mechanisms, the compounds were tested for antimicrobial activity and showed a strong correlation with their ion transport properties.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Anca-Elena Dascalu, Lau Halgreen, Aaron Torres-Huerta, Hennie Valkenier
Summary: Dynamic covalent chemistry has been widely used for applications requiring stability of covalent bonds and the ability to exchange building blocks. In this study, azines are introduced as a dynamic covalent functional group that combines the best characteristics of imines and acylhydrazones. The results demonstrate that azines are stable in the presence of water and that dynamic combinatorial libraries of azines and aldehydes equilibrate in less than an hour.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Anurag Singh, Aaron Torres-Huerta, Tom Vanderlinden, Nathan Renier, Luis Martinez-Crespo, Nikolay Tumanov, Johan Wouters, Kristin Bartik, Ivan Jabin, Hennie Valkenier
Summary: This study demonstrates the anion binding and anion transport properties of a series of calix[6]arenes decorated with halogen bond or hydrogen bond donating groups on their small rim. The results show that the halogen bond donating iodotriazole groups enable highly selective transport of chloride and nitrate anions, without the transport of protons or hydroxide.
CHEMICAL COMMUNICATIONS
(2022)
