Article
Chemistry, Multidisciplinary
Sergi Bujosa, Azahara Doncel-Gimenez, Nils Baeumer, Gustavo Fernandez, Enrique Orti, Antonio Costa, Carmen Rotger, Juan Arago, Bartolome Soberats
Summary: Hydrogen-bonded squaramide (SQ) supramolecular polymers exhibit uncommon thermoreversible polymorph transitions between particle- and fiber-like nanostructures. The transitions are triggered by the molecular reorganization of the SQ units changing from slipped to head-to-tail hydrogen bonding patterns. These transitions have concentration-dependent and kinetic characteristics, and are of interest in developing stimuli-responsive systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yanqiang Li, Xu Zhang, Jieyu Zheng, Yang Zhou, Weiqi Huang, Yipeng Song, Han Wang, Xianyu Song, Junhua Luo, Sangen Zhao
Summary: A new hydrogen bonded supramolecular framework, Cd(H2C6N7O3) (2)center dot 8H(2)O, exhibits an exceptionally large birefringence of 0.60, which is significantly larger than any commercial birefringent crystals and the largest among hydrogen bonded supramolecular framework crystals. The exceptional birefringence is mainly attributed to strong covalent interactions within (H2C6N7O3) organic ligands and their coplanarity.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Antoine Hinaut, Sebastian Scherb, Sara Freund, Zhao Liu, Thilo Glatzel, Ernst Meyer
Summary: The maintenance of clean conditions for samples is crucial in scanning probe studies at the atomic or molecular level. High-vacuum electrospray deposition is an alternative for large or fragile organic molecules where sublimation cannot be used, but maintaining clean conditions is challenging due to the introduction of molecules from solution. Additionally, the presence of solvent on the surface poses potential influence that needs to be considered.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Balamurugan Tharmalingam, Moorthy Mathivanan, Ottoor Anitha, Werner Kaminsky, Balasubramanian Murugesapandian
Summary: This paper reports the construction of hydrogen bonded supramolecular assemblies of salt obtained from a novel nitrogen-rich compound and various carboxylic acids. Different supramolecular assemblies were achieved by using different carboxylate anions. The thermal stability of the salts was examined using thermogravimetric analysis.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Review
Polymer Science
Emmanouil Vereroudakis, Dimitris Vlassopoulos
Summary: Supramolecular polymers are important in both scientific and technological aspects due to their dynamic nature and responsiveness to environmental parameters, showing diverse self-assembly structures and potential applications. However, there are still significant challenges in understanding the basic knowledge and unresolved issues, requiring further systematic categorization and analysis of experimental evidence.
PROGRESS IN POLYMER SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Dong Shao, Shi-Yuan She, Lin-Feng Shen, Xiaodong Yang, Zhengfang Tian
Summary: A hydrogen-bonded supramolecular framework of a cobalt(II) complex was synthesized and characterized. The framework showed considerable thermal stability and exhibited magnetic anisotropy, making it a promising platform for the development of molecular nanomagnets.
Article
Chemistry, Multidisciplinary
Ze-Xing Cai, Yanjie Xia, Yoshikazu Ito, Masataka Ohtani, Hikaru Sakamoto, Akitaka Ito, Yijia Bai, Zhong-Li Wang, Yusuke Yamauchi, Takeshi Fujita
Summary: The application scope of metal-organic frameworks (MOFs) can be expanded by rationally designing the structure and components of MOFs. A versatile templated strategy is proposed in this study, where organic ligands are weaved into hydrogen-bonded organic frameworks (HOFs) to synthesize MOF nanotubes controllably. Hybrid nanotubes containing nanometal crystals and N-doped graphene show excellent electrocatalytic HER activity and durability.
Article
Chemistry, Multidisciplinary
Zhuxi Yang, Taito Hashimoto, Ryusei Oketani, Takayoshi Nakamura, Ichiro Hisaki
Summary: This study demonstrates a method to construct porous organic frameworks with interactive free sites using the concept of geometrically mismatched frameworks, resulting in the successful preparation of CP-Phen-1 framework with such sites. The framework undergoes a two-step structural transformation upon loss of solvent molecules, yet exhibits good thermal stability up to 360 degrees C and selective CO2 adsorption.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Siqi Zhang, Chen Chen, Jianqiao Li, Chunyu Ma, Xiaokang Li, Wei Ma, Min Zhang, Faliang Cheng, Ke Deng, Qingdao Zeng
Summary: The supramolecular self-assembly behavior of a low-symmetric aromatic carboxylic acid molecule and its co-assembly behavior with a series of pyridine molecules were studied at the liquid-solid interface. It was found that the pyridine molecules were able to regulate the self-assembly structure of the carboxylic acid molecule, and the molecular arrangement of the co-assembled structures varies with the shape of the pyridine molecules.
Article
Chemistry, Organic
Gabriel Martinez, Nelson Ricardo Avila-Rovelo, Christian C. Carmona-Vargas, Imrane Id-boubrik, Amparo Ruiz-Carretero
Summary: DPP derivatives with thiophene capping rings are widely used as semiconductors in organic electronics, and their optoelectronic properties can be adjusted through different strategies. Incorporating hydrogen-bonding units into DPPs has been shown to improve the performance and morphology of organic solar cells. Modifying the thiophene capping units with hydrogen-bonding groups is a challenging synthetic task, but can yield exciting results.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Magdalena Ceborska, Kajetan Dabrowa, Jakub Cedrowski, Magdalena Zimnicka
Summary: Simple D-hexoses such as D-glucose, D-mannose, and D-galactose were found to form supramolecular complexes with folic acid (FA), with the pterin subunit of FA playing a crucial role in the assembly formation. Experimental measurements and DFT theoretical calculations revealed that the stability of hexose-FA assemblies is maintained by three complementary hydrogen bonds between the pterin subunit of FA and the 3,4,6-trihydroxyl moiety of hexose.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Review
Chemistry, Multidisciplinary
Bing Liu, Tao Yang, Xin Mu, Zhijian Mai, Hao Li, Yao Wang, Guofu Zhou
Summary: In a liquid crystal state, specific orientations and alignments of LC molecules produce outstanding anisotropy, with organic LC molecules and inorganic nanomaterials both capable of forming supramolecular LC phases. Hydrogen bonds are considered the best option for supramolecular LCs. This review summarizes the newest advances in self-assembled structure, stimulus-responsive capability and application of supramolecular hydrogen-bonded LC nanosystems, providing immense potential for advancing LC technology.
Article
Chemistry, Multidisciplinary
Senbin Chen, Zeke Li, Yanggui Wu, Nasir Mahmood, Frederic Lortie, Julien Bernard, Wolfgang H. Binder, Jintao Zhu
Summary: This study developed a new type of high-performance adhesive using a synthetic strategy and hydrogen bonding interactions, which has a wide range of industrial applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(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, Inorganic & Nuclear
Adam W. Augustyniak, Anna M. Trzeciak
Summary: The palladium azolate/carboxylate network, Pd-dmpzc, catalyzes the selective hydrogenation of phenyl-acetylene to styrene in water. Under optimized conditions, Pd-dmpzc provided better results than other palladium catalysts, with analysis showing the presence of different Pd2+ species and Pd-0 NPs contributing to the catalytic reaction.
INORGANICA CHIMICA ACTA
(2021)
Article
Biochemistry & Molecular Biology
Oscar Ramirez, Sebastian Bonardd, Cesar Saldias, Macarena Kroff, James N. O'Shea, David Diaz Diaz, Angel Leiva
Summary: The bimetallic NiPt nanoparticles were successfully loaded into alginate hydrogel beads through in situ reduction process, and the prepared hybrid hydrogels showed excellent catalytic activity and stability for the hydrolysis of ammonia borane to produce hydrogen.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Jonathan S. S. Austin, Nathan D. D. Cottam, Chengxi Zhang, Feiran Wang, Jonathan H. H. Gosling, Oliver Nelson-Dummet, Tyler S. S. James, Peter H. H. Beton, Gustavo F. F. Trindade, Yundong Zhou, Christopher J. J. Tuck, Richard Hague, Oleg Makarovsky, Lyudmila Turyanska
Summary: We report on the formulation of all-inorganic perovskite nanocrystals inks and their application in graphene photodetectors. By controlling the device structure and fabricating process, we achieved high photoresponsivity and controlled spectral response. Inkjet printing of perovskite, graphene, and gold nanoparticle inks enabled the realization of fully printed photodetectors with the highest reported photoresponsivity value. The developed perovskite ink offers opportunities for stable and sensitive graphene-based photon detectors.
Article
Chemistry, Multidisciplinary
Matthew D. Wadge, Matthew A. Bird, Andrzej Sankowski, Hannah Constantin, Michael W. Fay, Timothy P. Cooper, James N. O'Shea, Andrei N. Khlobystov, Darren A. Walsh, Lee R. Johnson, Reda M. Felfel, Ifty Ahmed, David M. Grant
Summary: This study investigates the chemical conversion and heat treatment of Ti6Al4V microspheres for their electrocatalytic properties. The wet-chemical conversion with sodium hydroxide and heat treatment at 450 degrees C are found to stabilize the surface of the microspheres and change the mechanism of the oxygen reduction reaction. The study explores a design strategy for new electrocatalyst materials by maintaining the microspherical nature of the material and tuning its surface.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Marcin A. Majewski, Wojciech Stawski, Jeff M. Van Raden, Michael Clarke, Jack Hart, James N. O'Shea, Alex Saywell, Harry L. Anderson
Summary: We demonstrate the synthesis of a macrocycle composed entirely of 5,15-linked porphyrins, providing insights into electronic delocalization and motivation for creating larger nanorings with closely spaced porphyrin units. The nanoring was constructed using a covalent six-armed template and consists of six edge-fused zinc(II) porphyrin dimer units and six un-fused nickel(II) porphyrins. STM imaging confirmed the size and shape of the spoked 18-porphyrin nanoring on a gold surface.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Alexander Allen, Mohammad Abdur Rashid, Philipp Rahe, Samuel P. Jarvis, James N. O'Shea, Janette L. Dunn, Philip Moriarty
Summary: In this study, submolecular resolution scanning tunnelling microscopy and qPlus atomic force microscopy were used to investigate the assembly of bi-isonicotinic acid on Au(111) and Ag(100) surfaces. The results showed that the formation of extended molecular rows is primarily driven by hydrogen bonding, and the influence of the substrate is relatively small. However, the surface does induce prochiral behavior and leads to the formation of a racemic mixture of rows with different handedness. A tiling model was adapted to the bi-isonicotinic acid system, providing insights into the growth kinetics and agreement with experimental observations of molecular morphologies.
Article
Biology
Maud Dumoux, Thomas Glen, Jake L. R. Smith, Elaine M. L. Ho, Luis M. A. Perdigao, Avery Pennington, Sven Klumpe, Neville B. Y. Yee, David Andrew Farmer, Pui Y. A. Lai, William Bowles, Ron Kelley, Juergen M. Plitzko, Liang Wu, Mark Basham, Daniel K. Clare, C. Alistair Siebert, Michele C. Darrow, James H. Naismith, Michael Grange, Giulia Zanetti
Summary: Cryogenic plasma FIB/SEM overcomes challenges in imaging non-stained biological samples, producing high-quality images with automated workflows. This technique allows for three-dimensional imaging of bacteria, human cells, and tissue with resolutions typically ranging from 20-50 nm.
Article
Chemistry, Inorganic & Nuclear
Matthew A. Stoodley, Benedikt P. Klein, Michael Clarke, Leon B. S. Williams, Luke A. Rochford, Pilar Ferrer, David C. Grinter, Alex Saywell, David A. Duncan
Summary: The adsorption structure of FePc and TiOPc was studied using NEXAFS spectroscopy and NIXSW technique. FePc adsorbs with the Fe metal centre at an adsorption height of 2.44 ± 0.09 ANGS and its macrocycle plane mostly parallel with the surface. TiOPc adsorbs with multiple configurations, with some Ti=O bonds pointing towards the surface and some pointing away, at an adsorption height of 3.00 ± 0.20 ANGS.
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Mustaqeem Shiffa, Benjamin T. Dewes, Jonathan Bradford, Nathan D. Cottam, Tin S. Cheng, Christopher J. Mellor, Oleg Makarovskiy, Kazi Rahman, James N. O'Shea, Peter H. Beton, Sergei V. Novikov, Teresa Ben, David Gonzalez, Jiahao Xie, Lijun Zhang, Amalia Patane
Summary: 2D semiconductors show great potential in various fields, but current fabrication methods have limitations. This study demonstrates a bottom-up approach for high-quality, wafer-scale 2SEM based on the wide band gap gallium selenide compound. The optical properties of the layers are utilized for photon sensing in the UV spectrum, offering a scalable route to deep-UV optoelectronics.
Article
Chemistry, Physical
Nouf Alharbi, Jack Hart, James N. O'Shea
Summary: This study used X-ray photoelectron spectroscopy (XPS) to investigate the deposition of a series of organic triphenylamine-based organic dye molecules (D5, SC4, and R6) on an atomically clean TiO2 (110) single crystal surface. The adsorption bond between the dyes and the surface was determined by exploring coverages from sub-monolayer to few-layer. The results showed that the dyes anchor to the oxide surface via the deprotonation of the carboxylic group, with little evidence of secondary bonding interactions.
Article
Chemistry, Multidisciplinary
Rosemary J. J. Young, Michael T. T. Huxley, Lingjun Wu, Jack Hart, James O'Shea, Christian J. J. Doonan, Neil R. R. Champness, Christopher J. J. Sumby
Summary: We investigated the photochemical and chemical processes of Mn(diimine)(CO)(3)X (X = halide) complexes in permanently porous metal-organic frameworks (MOFs). We observed the photo-liberation of CO from the metal and its escape from the MOF crystals. Crystallographic snapshots of the photolysis products were obtained due to the high crystallinity and structural flexibility of the MOF. Time resolved experiments revealed complementary spectroscopic studies and characterized the final photolysis product as a possible Mn(ii) entity. These findings provide insights into the chemistry of MOF-based photoCORMs and catalysts.
Article
Chemistry, Physical
Michael Clarke, Abigail Bellamy-Carter, Ferdinando Malagreca, Jack Hart, Stephen P. Argent, James N. O'Shea, David B. Amabilino, Alex Saywell
Summary: The incorporation of organic semiconducting materials within solid-state electronic devices is important for highly efficient photovoltaics, transistors, and light emitting diodes. This study focuses on the formation of a polymer based on a diketopyrrolopyrrole (DPP) monomer unit, which is synthesized on a surface and possesses aryl-halide groups for covalent coupling. The self-assembly of both the monomer material and the domains of polymeric material are investigated using scanning tunneling microscopy and X-ray photoelectron spectroscopy.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Josephine F. Smernik, Pol Gimeno-Fonquernie, Jorge Albalad, Tyla S. Jones, Rosemary J. Young, Neil R. Champness, Christian J. Doonan, Jack D. Evans, Christopher J. Sumby
Summary: This study investigates the synthesis of Mn-based metal-organic frameworks (MOFs), finding that MnMOF-1 is a kinetic or metastable phase, while a newly identified 2D layered material, MnMOF-2D, is the thermodynamically favored product. It is also shown that using longer linkers can help to form more stable structures. In addition, two new porous 3D Mn-based MOFs were successfully synthesized, highlighting the viability of using tetratopic hinged linkers to form 3D MOFs.
Article
Chemistry, Multidisciplinary
Matthew Edmondson, Eleanor S. Frampton, Chris J. Judd, Neil R. Champness, Robert G. Jones, Alex Saywell
Summary: A thermally induced order-disorder transition of 2H-TPP on Au(111) was investigated using scanning probe microscopy and X-ray photoelectron spectroscopy. The transition from an ordered close-packed phase to a disordered diffuse phase was found to be correlated with an on-surface cyclodehydrogenation reaction, and further heating of the diffuse phase resulted in the formation of a distinct nitrogen environment indicative of the Au-TPP species.
CHEMICAL COMMUNICATIONS
(2022)
