Article
Chemistry, Multidisciplinary
Zhong-Kun Wang, Xiao-Qiao Hong, Jinhui Hu, Yuan-Yuan Xing, Wen-Hua Chen
Summary: A series of squaramido-tethered bisbenzimidazoles were synthesized and showed moderate binding affinity toward chloride anions, being more active at acidic pH. Some of these conjugates exhibited moderate cytotoxicity towards selected solid tumor cell lines, possibly in an apoptotic manner, as indicated by MTT assay results.
Article
Chemistry, Multidisciplinary
Umatai A. Hale, Nandita Madhavan
Summary: A cyclic dipeptide ion-carrier with ester motifs for cation binding and amide-NH for anion binding is reported. The inclusion of lipophilic norbornene units facilitates membrane insertion and enables MCl co-transport with this simple design.
CHEMICAL COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Alexander M. Gilchrist, Xin Wu, Bryson A. Hawkins, David E. Hibbs, Philip A. Gale
Summary: Synthetic anion transporters have potential in treating life-threatening diseases and fluorination has been shown to tune their properties. In this study, a series of fluorinated tetrapodal anion transporters were designed and their effects on lipophilicity, solubility, deliverability, and anion transport selectivity were investigated. The most fluorinated tetrathiourea displayed the highest transport activity and an interesting inversion of Cl- vs NO3- transport selectivity was observed.
Article
Chemistry, Organic
Sribash Das, Rama Karn, Mohit Kumar, Soumya Srimayee, Debasis Manna
Summary: A molecular switch has been developed that can recognize and transport Cl- across lipid bilayers. The conformational changes induced by Cl- were confirmed through XRD-crystal structure and NOESY NMR spectra studies. The transportation of H+/Cl- across membranes was achieved through cooperative interactions between the quinazoline moiety and the thiourea moiety. The potent compound also exhibited increased Cl- transport in acidic environments and showed antibacterial activities by transporting H+/Cl- across Gram-positive bacteria.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuting Ma, Gaoyi Han, Meiling Yang, Mengna Guo, Yaoming Xiao, Yao Guo, Wenjing Hou
Summary: Sodium salt ([CF3SO2]2N)Li is used as a dopant to enhance the mobility of hole transport layers, but unwanted Li+ migration hinders the development of efficient and stable perovskite solar cells due to the acceleration of oxygen and moisture penetration caused by voids left by Li+ migration. Here, thenoyltrifluoroacetone (TTA) is used to modify the perovskite/spiro-OMeTAD interface. TTA passivates undercoordinated Pb2+ defects and inhibits Li+ migration while promoting hole extraction and improving the energy level matching at the perovskite/hole transport layer interface. A TTA-modified device achieves a power conversion efficiency of over 22% and exhibits enhanced humidity and thermal stability.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Optics
S. Kurashkin, O. Martynova, D. Savin, V. B. Ikonnikov, E. M. Gavrishchuk, A. P. Savikin
Summary: A laser-quality anisotropic ZnS:Cr2+ element was successfully obtained using prolonged hot isostatic pressing at high temperature, resulting in lasing centered at a wavelength of 2.45 μm, with longitudinal pumping at a wavelength of 1.94 μm.
Article
Chemistry, Multidisciplinary
Iida Partanen, Omar Al-Saedy, Toni Eskelinen, Antti J. Karttunen, Jarkko J. Saarinen, Ondrej Mrozek, Andreas Steffen, Andrey Belyaev, Pi-Tai Chou, Igor O. Koshevoy
Summary: Crystalline diphosphonium iodides with different aromatic spacers exhibit photoemissive properties under ambient conditions. The emission colors and intensities are determined by the structure and substitution geometry of the chromophore motif, as well as the anion-p interactions. Time-resolved and variable-temperature luminescence studies confirm the phosphorescent nature of these compounds, with observed lifetimes ranging from 0.46 to 92.23 μs at 297 K. The fast radiative rate constants for salts 1-3 suggest the involvement of spin-orbit coupling and charge transfer in the triplet excited state. This metal-free phosphorescence mechanism is comparable to that of transition metal complexes and organic luminophores utilizing thermally activated delayed fluorescence.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Electrical & Electronic
Yannick Delvert, Antoine Chauloux, Jean-Christophe Diot, Thierry Chanconie, Nicolas Ribiere-Tharaud, Philippe Leveque
Summary: In this article, a compact efficient and frequency tunable relativistic magnetron (RM) with a reducing coaxial section (RCS) and tilted tuners is presented. The design meets technical requirements such as input impedance, mechanical dimensions, power handling capacity, and electromagnetic mode. The RCS design is used to decrease the output waveguide diameter and mitigate the electromagnetic mode competition. Tilted tuners are used to reduce the electric field strength while maintaining high power handling.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Environmental
Yunseok Lee, Seokyoon Moon, Dongju Seo, Seungin Lee, Youngjune Park
Summary: This study reports the occurrence of sH tuning behavior in 1-Methylpiperidine + CH(4) hydrate systems under mild formation conditions. The tuning patterns were observed below the eutectic composition of water + 1-Methylpiperidine, indicating the significant role of the supercooled aqueous phase in the tuning phenomena. These findings could open up new strategies for enhancing gas storage capacity and provide critical insights into clathrate chemistry.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Biochemistry & Molecular Biology
Pedro Caetano-Pinto, Simone H. Stahl
Summary: Organic anion transporters 1 and 3 (OAT1 and OAT3) are crucial for kidney function and play a role in regulating the secretion of small molecules and toxic by-products. Understanding the regulatory mechanisms of these transporters can aid in drug development.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Spectroscopy
Fatemeh Parchegani, Saeid Amani, Mojgan Zendehdel
Summary: In this study, a chitosan Schiff base sample (CSAN) was successfully designed and prepared with high selectivity towards cyanide ions. Through structural analysis and experimental detection, CSAN showed promising sensor performance in aqueous media, indicating potential practical applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Environmental Sciences
Yevhen Yashchyshyn, Dmytro Vynnyk, Volodymyr Haiduchok, Ivan Solskii, Changying Wu, Grzegorz Bogdan, Jozef Modelski
Summary: To address the challenge of small size for GNSS terminals in compact devices, this paper presents an electrically small antenna (ESA) designed with high permittivity dielectric blocks and adjustable metallic rods to achieve miniaturization and tunable frequency, confirming its feasibility and usability for compact GNSS terminals.
Article
Chemistry, Physical
Donglei Bu, Duocheng Bu, Wei Chen, Changgeng Huang, Libo Li, Hao Lei, Shaoming Huang
Summary: Three new Cu-X-bpy (X = Cl/Br, Cl/I or Br/I) photocatalytic materials were synthesized and their hydrogen production performance was systematically investigated. It was found that the hydrogen productivity can be significantly enhanced by varying the anions in the materials.
JOURNAL OF CATALYSIS
(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
Physics, Applied
Jose Diogo Costa, Bruno Figeys, Xiao Sun, Nele Van Hoovels, Harrie A. C. Tilmans, Florin Ciubotaru, Christoph Adelmann
Summary: In this study, compact tunable YIG-based RF resonators with mu m-sized spin-wave cavities were designed, fabricated, and characterized. Inductive antennas with ladder and meander configurations were used as transducers between spin waves and RF signals. The excitation of ferromagnetic resonance and standing spin waves in the YIG cavities resulted in sharp resonances with quality factors up to 350. The observed spectra were in excellent agreement with a model based on the spin-wave dispersion relations in YIG, showing a high magnetic field tunability of about 29MHz/mT.
APPLIED PHYSICS LETTERS
(2021)
Editorial Material
Multidisciplinary Sciences
David N. Sheppard, Anthony P. Davis
Review
Chemistry, Multidisciplinary
Jinqiao Dong, Anthony P. Davis
Summary: Hydrogen bonding plays a key role in molecular recognition, and recent research has focused on utilizing it in water. Synthetic receptors combining hydrogen bonding with hydrophobic interactions show promise for biomedical applications in the future.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Javier Ramos-Soriano, Sergio J. Benitez-Benitez, Anthony P. Davis, M. Carmen Galan
Summary: The development of chemosensors to detect analytes in biologically relevant solutions is a challenging task. This study successfully synthesized a fluorescent receptor that can detect glucose in aqueous media and distinguish between closely related monosaccharides, highlighting the potential of VIE-type receptors for the quantitative determination of saccharides in biological samples.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(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
Multidisciplinary Sciences
Jinqiao Dong, Lingmei Liu, Chunxia Tan, Qisong Xu, Jiachen Zhang, Zhiwei Qiao, Dandan Chu, Yan Liu, Qun Zhang, Jianwen Jiang, Yu Han, Anthony P. Davis, Yong Cui
Summary: Researchers showed that crystals composed of discrete supramolecular coordination complexes can be exfoliated by sonication to produce free-standing monolayers. These monolayers have complex chiral surfaces and good crystallinity, and the intermolecular interactions sustaining them are purely due to apolar interactions. This unique material exhibits enhanced selectivity towards carbohydrate recognition.
Article
Chemistry, Organic
Claire S. S. Webster, Federica Balduzzi, Anthony P. P. Davis
Summary: In this study, two water-soluble tricyclic Temple macrocycles were synthesized and evaluated as receptors for aromatic compounds in aqueous media. The results showed that these macrocycles exhibited good selectivity for methylated purine alkaloids and displayed significant changes in fluorescence. Additionally, a geometrically complementary guest was identified with strong binding ability.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Federica Balduzzi, Patrick Stewart, Soumen K. Samanta, Tiddo J. Mooibroek, Thomas Hoeg-Jensen, Kejia Shi, Bradley D. Smith, Anthony P. Davis
Summary: This study discovers a new macrocyclic host that exhibits exceptional affinity and selectivity towards squaraine dyes in water, forming stable complexes with near-infrared fluorescence. This macrocyclic host has the potential to be used as a supramolecular glue in biomedical techniques.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Organic
Alister J. Flint, Anthony P. Davis
Summary: This article provides an overview of vancomycin's structure and action, surveys past work on vancomycin mimicry, and makes the case for renewed effort in the future.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Ondrej Jurcek, Nonappa, Elina Kalenius, Pia Jurcek, Juha M. Linnanto, Rakesh Puttreddy, Hennie Valkenier, Nikolay Houbenov, Michal Babiak, Miroslav Peterek, Anthony P. Davis, Radek Marek, Kari Rissanen
Summary: Constructing structurally complex architectures using unique ligands is a challenge in metallosupramolecular chemistry, but a superchiral Pd3L6 complex can be obtained via supramolecular transmetalation reactions. These complexes can self-organize into hexagonal microparticles in aqueous media, potentially leading to the development of novel metal-organic functional materials made of natural, abundant, and relatively inexpensive steroidal compounds.
CELL REPORTS PHYSICAL SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Awais Siddique Saleemi, Muhammad Hafeez, Aqsa Munawar, Naeem Akhtar, Waseem Abbas, Muhammad Ehsan Mazhar, Zahid Shafiq, Anthony P. Davis, Shern-Long Lee
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
Article
Chemistry, Multidisciplinary
Danny Van Eker, Soumen K. Samanta, Anthony P. Davis
CHEMICAL COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Victoria L. Heywood, Thomas P. J. Alford, Julius J. Roeleveld, Siebe J. Lekanne Deprez, Abraham Verhoofstad, Jarl Ivar van der Vlugt, Sergio R. Domingos, Melanie Schnell, Anthony P. Davis, Tiddo J. Mooibroek
Review
Chemistry, Multidisciplinary
Anthony P. Davis
CHEMICAL SOCIETY REVIEWS
(2020)
Article
Chemistry, Multidisciplinary
Robert A. Tromans, Soumen K. Samanta, Andy M. Chapman, Anthony P. Davis
Article
Chemistry, Multidisciplinary
Hongyu Li, Hennie Valkenier, Abigail G. Thorne, Christopher M. Dias, James A. Cooper, Marion Kieffer, Nathalie Busschaert, Philip A. Gale, David N. Sheppard, Anthony P. Davis
