Article
Chemistry, Multidisciplinary
Benjamin H. Wilson, Jas S. Ward, David C. Young, Jun-Liang Liu, Corine Mathoniere, Rodolphe Clerac, Paul E. Kruger
Summary: This study describes the self-assembly synthesis of an octanuclear Co-II [2]catenane with unique magnetic properties. By manipulating the synthetic conditions, a mixed-valence non-catenated rectangle can also be obtained. The work demonstrates the precise control of single-molecule magnets in complex arrangements through metallo-supramolecular chemistry.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Isha Mishra, Bhaskaran Shankar, Malaichamy Sathiyendiran
Summary: Three trinuclear rhenium-(I)-organic complexes with a triangular structure were synthesized via a one-pot approach. The complexes possess unique supramolecular tubular architecture.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Physical
Ruslan Kashapov, Yuliya Razuvayeva, Albina Ziganshina, Anna Lyubina, Syumbelya Amerhanova, Anastasiia Sapunova, Alexandra Voloshina, Irek Nizameev, Vadim Salnikov, Lucia Zakharova
Summary: Self-assembly of molecular elements through non-covalent interactions plays a central role in supramolecular chemistry. The interaction between macrocyclic and open-chain amphiphilic building blocks has been studied extensively and has been found to result in highly-ordered supramolecular structures. These structures have potential applications in drug delivery.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Multidisciplinary
Fen Ma, Xinrui Qiao, Wei Zuo, Yu Tao, Anyang Li, Zhipeng Luo, Yuqi Liu, Xueru Liu, Xiaoqing Wang, Wei Sun, Chuandong Jia
Summary: This study introduces a simpler strategy for the design of anionocages using monourea as the hydrogen bonding donor. Two fluorescent quadruple helicate anionocages were successfully constructed, capable of encapsulating different sized cation guests.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Jin Wang, Peter C. Ho, Matthew G. J. Craig, Alberto Cevallos, James F. Britten, Ignacio Vargas-Baca
Summary: Studies have been conducted on the supramolecular chemistry of iso-tellurazole N-oxides in non-polar media. However, this study introduces a derivatized iso-tellurazole N-oxide that is soluble in polar solvents and stable in aqueous media. The compound forms macrocyclic complexes with nickel (II) and iron (II) through CTe...O chalcogen bonds and kappa(6)-O bound to the metal ion, which is different from the complexes formed by soft metal ions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Organic
Suren J. Nemat, Konrad Tiefenbacher
Summary: Three novel thiol-bearing resorcin[4]arene and pyrogallol[4]arene derivatives were synthesized and studied for their properties in self-assembly, disulfide chemistry, and Bronsted acid catalysis. The findings showed that one compound could form a hexameric hydrogen bond-based capsule in self-assembly, another compound could be covalently linked through disulfides, and the increased acidity of aromatic thio-substituent was not sufficient to replace HCl as a cocatalyst for capsule-catalyzed terpene cyclizations.
Article
Engineering, Chemical
Shushan Yuan, Gang Zhang, Junyong Zhu, Jie Yang, Suilin Liu, Bart Van der Bruggen
Summary: The study synthesized membranes based on entirely resorcin[4]arene (RA) macrocycles, with the membrane from RA-3R at a concentration of 0.73 wt% showing the optimal nanofiltration (NF) performance, achieving a water permeability of 26.2 L m(-2) h(-1) bar(-1) and maintaining 95.6% rejection of Na2SO4.
Article
Chemistry, Multidisciplinary
Daria Sokolova, GiovanniMaria Piccini, Konrad Tiefenbacher
Summary: This study presents the first examples of optically active hexameric resorcin[4]arene capsules and demonstrates the possibility of chirality transfer inside a relatively large molecular container. These capsules are able to enantioselectively catalyze tail-to-head terpene cyclizations and exhibit surprisingly high sensitivity to structural modifications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Wei Zuo, Yu Tao, Zhipeng Luo, Anyang Li, Shanshan Wang, Xinrui Qiao, Fen Ma, Chuandong Jia
Summary: Inspired by the signal transduction function of organophosphates, bioactive organophosphates were used as chiral nodes to control the stereoselective assembly of hydrogen-bonded anionic cages. Antibiotics such as phosphonomycin and clindamycin phosphate, antiviral drug tenofovir, and natural product AMP were assembled with an achiral bis-monourea ligand to form quadruple or triple helicates with stereoselectivity. The stereoselectivity could be enhanced by lowering temperature or using stronger-binding cations as templates. Enantioselectivity was achieved when binding chiral quaternary ammonium cations with the chiral anionic cages as hosts.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Toshiharu Ishizaki, Hideaki Karasaki, Yuto Kage, Misaki Kamioka, Yitong Wang, Shigeki Mori, Naoto Ishikawa, Takamitsu Fukuda, Hiroyuki Furuta, Soji Shimizu
Summary: In this study, a novel pyrrolopyrrole azadipyrrin with Janus duality was successfully synthesized, enabling the formation of one-dimensional arrays in solution and in the solid state. The supramolecular assembly of the zinc complex in solution was investigated based on the isodesmic model, while the cobalt complex exhibited unique magnetic relaxation behavior in the solid state.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Peng-Fei Cui, Xin-Ran Liu, Yue-Jian Lin, Zhen-Hua Li, Guo-Xin Jin
Summary: This study reports the rational design of a metallacage with carborane functionality and cooperative dihydrogen binding sites for the highly selective capture of cyclohexane molecules, which could potentially have exciting future applications in supramolecular chemistry for the selective adsorption and separation of alkane molecules.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Petr Motloch, Christopher A. Hunter
Summary: The study reports the self-assembly of a unique molecular container, a hybrid cage combining hydrogen bonding and metal coordination as crucial components of its topology. The hybrid cage, prepared by combining hydrogen-bonded rosette motif and palladium(II)/platinum(II) coordination to a pyridine ligand, shows a genuine dual character for the first time. The dual character is demonstrated as the two self-assembling parts selectively responding to different stimuli, leading to the disassembly of the cage.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Alessandro Marchetti, Andrea Pizzi, Greta Bergamaschi, Nicola Demitri, Ulrike Stollberg, Ulf Diederichsen, Claudia Pigliacelli, Pierangelo Metrangolo
Summary: Iodination is a successful labelling strategy to gain structural insights into proteins and biomolecules. However, interactions driven by iodine may significantly alter the self-assembly behavior of smaller biomolecular systems. In this study, an aliphatic bis-iodinated amino acid was synthesized and incorporated into a custom pentapeptide, leading to enhanced fibrillogenic behavior and amyloid fibril formation.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Organic
Waldemar Iwanek
Summary: This paper focuses on the synthesis of complexes between R[4]A and sec-amines, and investigates the effects of solvent and amine size on complex formation. Computational analysis suggests that a decrease in electrostatic interactions and an increase in exchange and dispersion interactions drive the placement of sec-amine molecules into the R[4]A cavity and the formation of in-type complexes in CHCl3 compared to DMSO.
BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Lin-Fang Dai, Xue-Ru Liu, Yi-Qi Tian, Xiao-Yi Yi, Chao Liu
Summary: This study synthesized six TBC[6]-stabilized titanium-oxo clusters (TOCs) using TBC[6] as the ligand. The introduction of auxiliary carboxylic ligands led to the growth of cluster structures, increasing the variety of TOCs. The clusters showed potential as recyclable heterogeneous photocatalysts for the oxidation of sulfide to sulfoxide.
INORGANIC CHEMISTRY
(2023)
Article
Spectroscopy
Punam Rana, Narayan Murmu, Subrata Kumar Padhan, Satya Narayan Sahu
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2020)
Article
Nanoscience & Nanotechnology
Yubo Qi, Michael Westphal, Neita Khayya, Inga Ennen, Tobias Peters, Julian Cremer, Dario Anselmetti, Guenter Reiss, Andreas Huetten, Armin Goelzhaeuser, Petr Dementyev
Summary: Despite the challenges of synthesizing large-scale intrinsically porous planar nanomaterials, this study presents a facile method for fabricating continuous water-selective carbon nanomembranes of variable thickness from polycyclic aromatic hydrocarbons. The membranes exhibit high porosity and their performance is strongly influenced by thickness, as evidenced by permeation measurements and modeling.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Maxim Dirksen, Pascal Fandrich, Lukas Goett-Zink, Julian Cremer, Dario Anselmetti, Thomas Hellweg
Summary: This study explores the production of thermoresponsive, free-standing microgel membranes using N-isopropylacrylamide (NIPAM) and the UV-sensitive comonomer 2-hydroxy-4-(methacryloyloxy)benzophenone (HMABP). The use of different cross-linkers in microgel syntheses allows for variations in the network structure and swelling behavior. The incorporation of the comonomer is influenced by the choice of cross-linker, which is crucial for the subsequent photochemical membrane formation.
Article
Nanoscience & Nanotechnology
Patrick Stohmann, Sascha Koch, Yang Yang, Christopher David Kaiser, Julian Ehrens, Juergen Schnack, Niklas Biere, Dario Anselmetti, Armin Goelzhaeuser, Xianghui Zhang
Summary: Ultrathin membranes with subnanometer pores for molecular size-selective separation were created through electron-induced cross-linking of self-assembled monolayers (SAMs) on surfaces.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Viktor Sabadasch, Maxim Dirksen, Pascal Fandrich, Julian Cremer, Niklas Biere, Dario Anselmetti, Thomas Hellweg
Summary: In this study, palladium-loaded smart membranes made by UV cross-linking of thermoresponsive microgels were prepared as reusable, catalytically active materials. The membranes were examined for their coverage of a supporting mesh and their Young modulus. The catalytic activity of the membrane was compared with suspended colloidal nanoparticle microgel hybrids, and the membrane showed lower catalytic activity but allowed for easy separation and recycling of the catalyst. The results demonstrate the feasibility and durability of depositing catalytically active inter-cross-linked microgel particles on commercial nylon meshes for scaling up continuous industrial processes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biochemical Research Methods
Subrata Kumar Padhan, Janmejaya Bag, Munmun Panda, Bijesh Kumar Biswal, Harekrushna Sahoo, Monalisa Mishra, Satya Narayan Sahu
Summary: In this study, a new fluorescent dye CTC was designed for selective binding to actin proteins, and its advantages were verified in Drosophila and cell lines. The dye can efficiently bind to actin without any secondary intermediate and exhibits excellent photostability. This is the first fluorescent dye that can bind to actin proteins without employing any secondary intermediate/actin-binding domain, opening up possibilities for imaging and tracking actin proteins in various in vivo and in vitro systems.
BIOCONJUGATE CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Jenny Fjodorova, Robin Held, Gerd Hublik, Jorge M. Esteban Vazquez, Volker Walhorn, Thomas Hellweg, Dario Anselmetti
Summary: Xanthan gum''s thickening properties are correlated with the formation of secondary structures and the coordination of ions on the polymer side chain. Modifying the secondary structures can alter its thickening properties.
Article
Multidisciplinary Sciences
Zhiwei Jiang, Ruijiao Dong, Austin M. Evans, Niklas Biere, Mahmood A. Ebrahim, Siyao Li, Dario Anselmetti, William R. Dichtel, Andrew G. Livingston
Summary: In this study, we successfully created ordered pores in an ultra-thin nanofilm by synthesizing selectively functionalized macrocycles with differentiated reactivities. The size of the subnanometre macrocycle pores in the nanofilm surfaces could be precisely tailored by varying the macrocycle identity. Compared to disordered membranes, aligned macrocycle membranes exhibited higher permeance and selectivity. In high-value separations, such as enriching cannabidiol oil, the aligned macrocycle membranes achieved significantly faster ethanol transport and higher enrichment.
Article
Chemistry, Physical
Lukas Eickhoff, Mira Kessler, Christopher Stubbs, Jakob Derksen, Martina Viefhues, Dario Anselmetti, Matthew I. I. Gibson, Berthold Hoge, Thomas Koop
Summary: This study explores the relationship between the molecular size of poly(vinyl alcohol) (PVA) and its ice nucleation activity. The experiments show that the ice nucleation activity of shorter PVA chains significantly decreases with a decrease in molar mass. The results support the view that PVA polymers and oligomers act as heterogeneous ice nucleators.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Polymer Science
Julian Cremer, Bernhard P. Kaltschmidt, Annika Kiel, Jens Eberhard, Stephan Schmidt, Christian Kaltschmidt, Barbara Kaltschmidt, Andreas Huetten, Dario Anselmetti
Summary: The aging-induced surface-covering EBS layers changed the surface morphology, promoting bacterial adhesion and biofilm formation of Pseudomonas aeruginosa. This study provides insight into the time-dependent, polymer-liquid interface aging process of industrial performance polypropylene samples and highlights the detrimental effects of EBS on surface transformation and degradation.
Article
Nanoscience & Nanotechnology
Zhen Yao, Nikolaus Meyerbroeker, Yubo Qi, Julian Cremer, Michael Westphal, Dario Anselmetti, Yang Yang, Armin Goelzhaeuser
Summary: A scalable synthesis method for carbon nanomembranes (CNMs) has been developed using self-assembled monolayers and electron irradiation. The CNMs, created from poly(4-vinylbiphenyl) (PVBP) spin-coated on SiO(2)/Si wafers, exhibit a high water flux, precise ion selectivity, and high porosity. The method provides a feasible route for large-scale fabrication of CNMs for various applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Suman Swami, Satya Narayan Sahu, Rahul Shrivastava
Summary: Tetrazoles are important heterocyclic scaffolds with wide applications, and nanomaterials serve as efficient catalysts for their green synthesis.
Article
Chemistry, Multidisciplinary
Maxim Dirksen, Timo Braendel, Soren Grosskopf, Sebastian Knust, Johannes Bookhold, Dario Anselmetti, Thomas Hellweg
Summary: Poly(N-isopropylacrylamide) based copolymer microgels were used to create thermoresponsive membranes for investigating ion transport. Additionally, these microgels can be decorated with silver nanoparticles and cross-linked for catalytic reduction applications.
Article
Chemistry, Multidisciplinary
Subrata Kumar Padhan, Vipin Kumar Mishra, Narayan Murmu, Sabyashachi Mishra, Satya Narayan Sahu
Article
Chemistry, Organic
Punam Rana, Lipsarani Panda, Narayan Murmu, Bhawani Prasad Bag, Satya Narayan Sahu
ORGANIC & BIOMOLECULAR CHEMISTRY
(2020)
