Article
Materials Science, Paper & Wood
Umesh P. Agarwal, Sally A. Ralph, Carlos Baez, Richard S. Reiner
Summary: In cellulose materials, the cellulose II allomorph is important and can be detected using Raman spectroscopy. This study developed a calibration method based on Raman intensities at specific peaks to quantitatively analyze the content of cellulose II in samples. The Raman method was found to be more sensitive than X-ray diffraction in detecting and quantifying cellulose II.
Article
Materials Science, Paper & Wood
B. Duchemin
Summary: In his recent work, Henri Chanzy found that cellulose IVI could be generated in the native cell wall. However, it was difficult to distinguish cellulose IVI from imperfect forms of cellulose I in powder patterns. Through the study of flax fibers and fir wood, three characteristic reflections with different interplanar spacings were identified. A lineshape analysis provided insight into the longitudinal arrangement of cellulose in terms of domain sizes, microstrains, and paracrystallinity.
Article
Chemistry, Applied
Ibrahim Ali Hamad Ameen Sherwani, Aysegul Kose, Ozge Gungor, Hilal Kirpik, Seyit Ali Gungor, Muhammet Kose
Summary: Two benzimidazole ligands with alkylated benzimidazole units were synthesized and characterized. Cu(II) complexes were prepared and their solid structures were determined using X-ray diffraction. The DNA binding properties of the ligands and complexes were investigated, revealing the influence of structural variations and coordination geometry on binding.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Materials Science, Paper & Wood
Masahisa Wada, Sayuri Wakiya, Kayoko Kobayashi, Satoshi Kimura, Motomitsu Kitaoka, Ryosuke Kusumi, Fumiko Kimura, Tsunehisa Kimura
Summary: Enzymatic synthesis was used to produce cellulose oligomers with azido groups, which were then used to create cellulose microcrystal suspensions with exposed azido groups on the surface. The microcrystals, in a crystalline form of cellulose II, were several micrometers in length and had a thickness of 5.1-5.2 nm.
Article
Chemistry, Inorganic & Nuclear
Ganesh S. Hegde, Satish S. Bhat, Sandeep P. Netalkar, Pooja L. Hegde, Avinash Kotian, Ray J. Butcher, Vidyanand K. Revankar
Summary: A series of ligand 3,5-di-tert-butyl-2-hydroxy-N?-((2-oxo-1,2-dihydroquinolin-3-yl)methylene)benzohydrazide and its metal complexes were synthesized and characterized using various techniques. The copper(II) complex showed the best antimicrobial activity, particularly against gram-positive S. Aureus.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Applied
Gina Lupascu, Elena Pahontu, Sergiu Shova, Stefania Felicia Barbuceanu, Mihaela Badea, Codruta Paraschivescu, Johny Neamtu, Mihaela Dinu, Robert Viorel Ancuceanu, Doina Draganescu, Cristina Elena Dinu-Pirvu
Summary: The synthesis and characterization of HL and its cobalt, copper, manganese, nickel, palladium, and platinum complexes were investigated using various physico-chemical techniques. The coordination geometries of Ni2+ and Pd2+ were square planar, while that of copper atom was described as tetrahedrally distorted square planar. Toxicity assessment showed that the Mn2+ complex did not exhibit any lethal effect on animal cells.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Optics
David Ceddia, Andrew M. Kingston, Daniele Pelliccia, Alexander Rack, David M. Paganin
Summary: Spatial light modulation is important for various applications, and we propose a new method called ghost projection that does not require configurable beam-shaping elements. Instead, this method displaces a single illuminated mask to create specific radiant exposure distributions. We study the effects and limitations of this method and investigate how to adapt it to spatially nonuniform illumination. These findings will help optimize experimental design and achieve practical ghost projection.
Article
Environmental Sciences
Xingwen Lu, Zebiao Huang, Zhihong Liang, Zhe Li, Jiani Yang, Yujie Wang, Fei Wang
Summary: This study investigated the influence of Cu and Zn on the precipitation of struvite, showing that the addition of Cu and/or Zn can disrupt the crystalline growth of struvite and promote the formation of amorphous phases. When Cu and Zn coexisted, there was competitive binding of PO4 between the two metals. Overall, the presence of Cu and Zn during struvite formation greatly affects its content by forming different metal-containing products.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Construction & Building Technology
Shaochun Ma, Huimin Xiao, Peng Bao
Summary: This paper studies the effects of different alkali concentrations on the mechanical properties of soil in the special geological environment of the Kaifeng region. The results show that increased alkali concentration leads to changes in soil deformation and strength characteristics, and the newly generated cementing material affects soil stability.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Joerg Wagler, Robert Gericke
Summary: Compound 1Ge and CuCl react to form the heteronuclear complex 2Ge' instead of the expected compound 2Ge. Single-point calculations confirmed the stability of 2Ge' over 2Ge and the stability of 2Si over 2Si'. Decomposition of 2Ge' provided access to crystals of the copper(II) compound 3Ge.
Article
Biochemistry & Molecular Biology
Yong-Chang Zhao, Yan Zhang, De-Ying Jiang, Liang Wang, Ping Sun
Summary: By altering auxiliary nitrogen-donor ligands, two novel coordination polymers containing Cu(II) were synthesized. The CP 1 exhibited stronger improvement on coagulation parameters and could decrease inflammatory mediators released by the atherosclerotic segment compared to CP 2. Additionally, CP 1 showed stronger activity in inhibiting the Notch signaling pathway.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Daniel Lueert, Christina M. Legendre, Regine Herbst-Irmer, Dietmar Stalke
Summary: This study reports the synthesis and magnetic properties of three mixed metal triimidosulfite based alkali-lanthanide-metal-cages, and demonstrates that preventing lithium chloride co-complexation can significantly enhance the performance of sulfur-nitrogen ligands. One of the complexes also exhibits butterfly-shaped hysteresis.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Nicola D. Kelly, Simon J. Clarke
Summary: We have reported a solid-state synthesis method for all 18 layered oxide chalcogenides and studied their composition and reactivity. It was found that all materials have the same structure and cell, and exhibit temperature-independent paramagnetism and correlated electronic behavior. Additionally, a new metastable layered phase can be obtained by oxidative deintercalation.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Biochemistry & Molecular Biology
Hassan Keypour, Hojatollah Fatemikia, Roya Karamian, Mohammad Taher Rezaei, Shokufeh Ghasemian Sorboni, Robert William Gable
Summary: Three new metal complexes were obtained from the reaction of a new polyamine (L) with Ni(II), Cu(II), and Co(II) ions. The Cu(II) complex exhibited a highly distorted square pyramidal environment and showed the highest biological activity among the complexes. The complexes also displayed stronger antiproliferative and antibacterial activities compared to the ligand.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
Article
Chemistry, Multidisciplinary
Shuo Feng, Rajesh Kumar Singh, Yucheng Fu, Zhuo Li, Yulong Wang, Jie Bao, Zhijie Xu, Guosheng Li, Cassidy Anderson, Lili Shi, Yuehe Lin, Peter G. Khalifah, Wei Wang, Jun Liu, Jie Xiao, Dongping Lu
Summary: In this study, a simple strategy was demonstrated for constructing low-tortuosity through-pores in both vertical and planar directions of electrodes by casting large particles into single-particle-layer electrodes. Through multi-scale characterizations and simulations, correlations between material/electrode structures, electrolyte permeability, polysulfide migration, and sulfur reactions were elucidated. The high-loading and dense sulfur cathode fabricated by this method delivers a high specific capacity at a very low electrolyte/sulfur ratio.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Wei Li, Yu Ogawa, Javier Perez, Karim Mazeau, Isabelle Morfin, Yoshiharu Nishiyama
Summary: This study used X-ray diffraction to investigate the swelling behavior of cellulose in sulfuric acid at low temperatures and discovered a crystalline complex of cellulose and sulfuric acid. The sulfuric acid molecules arrange themselves similarly to those in its tetrahydrate crystal, while cellulose molecules adopt a rare fivefold helical conformation. The formation of this complex depends on the acid concentration and occurs only above 62 wt%.
CRYSTAL GROWTH & DESIGN
(2022)
Review
Chemistry, Multidisciplinary
Yu Ogawa, Jean-Luc Putaux
Summary: This article reviews the recent advances in electron microscopy of carbohydrate nanoparticles, with particular emphasis on understanding the three-dimensional shape and structural heterogeneity using low-dose electron tomography and electron diffraction techniques coupled with cryogenic transmission electron microscopy.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Applied
Lengwan Li, Lorenza Maddalena, Yoshiharu Nishiyama, Federico Carosio, Yu Ogawa, Lars A. Berglund
Summary: This study investigates the properties of nanocomposites based on natural components that can be recycled for sustainable development. By combining 1D cellulose and 2D clay platelets, the nanocomposites showed improved nanoparticle dispersion. The resulting films demonstrated high ultimate strength and Young's modulus, as well as good optical transmittance, UV-shielding, thermal shielding, and fire-retardant properties, which were influenced by the dispersion of the 2D nanoplatelets.
CARBOHYDRATE POLYMERS
(2022)
Article
Plant Sciences
Miranda A. Sinnott-Armstrong, Yu Ogawa, Gea Theodora van de Kerkhof, Silvia Vignolini, Stacey D. Smith
Summary: A multilayer photonic structure that can produce structural colors by reflecting blue light wavelengths has been discovered in the fruits of Lantana strigocamara. This structure begins to form early in fruit development and intensifies over time. Comparative analysis with a similar structure in Viburnum tinus reveals chemical differences between the two, suggesting distinct evolutionary trajectories and signaling functions in fruits.
Article
Polymer Science
Karim Mazeau, Yoshiharu Nishiyama, Yu Ogawa, Luc Choisnard, Denis Wouessidjewe, Jean-Luc Putaux, Cong Anh Khanh Le
Summary: Chain-folded lamellar V-amylose single crystals were prepared by adding butan-1-ol to hot dilute aqueous solutions of native amylose. A molecular model was proposed based on thorough search of helix position and restrained structure refinement against diffraction data.
Article
Chemistry, Multidisciplinary
Giulio Fittolani, Denisa Vargova, Peter H. Seeberger, Yu Ogawa, Martina Delbianco
Summary: This study presents a bottom-up approach to understand the transfer of chirality from single cellulose oligomers to supramolecular assemblies. It is found that cellulose oligomers self-assemble into bundles with controllable chirality, which is directly correlated to the stereochemistry of the oligomers. The chirality of the cellulose assemblies can be manipulated by altering the stereochemistry.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Correction
Plant Sciences
Bodo D. Wilts, Paula J. Rudall, Edwige Moyroud, Yu Ogawa, Silvia Vignolini, Ullrich Steiner, Beverley J. Glover
Article
Chemistry, Multidisciplinary
Hilda Zahra, Julian Selinger, Daisuke Sawada, Yu Ogawa, Hannes Orelma, Yibo Ma, Shogo Kumagai, Toshiaki Yoshioka, Michael Hummel
Summary: This study evaluates the use of keratin from chicken feathers as a charring agent to improve the carbon yield of cellulose-derived carbon fibers. The addition of keratin increases the carbon yield by 53 wt %, while reducing the impact on the mechanical properties of the precursor fibers compared to other charring agents.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Cong Anh Khanh Le, Yu Ogawa, Florent Grimaud, Yoshiharu Nishiyama, Isabelle Morfin, Gabrielle Potocki-Veronese, Luc Choisnard, Denis Wouessidjewe, Jean-Luc Putaux
Summary: This study describes the crystal structures of starch-small molecule inclusion complexes formed by crystallizing starch in the presence of aromatic compounds. Three new allomorphs were identified and characterized using various techniques.
CRYSTAL GROWTH & DESIGN
(2022)
Review
Biochemistry & Molecular Biology
Yu Ogawa, Yoshiharu Nishiyama, Jean-Luc Putaux
Summary: Polysaccharides are abundant biopolymers with significant importance in biological systems and material development. However, conventional crystallography methods are not suitable for polysaccharide crystals due to their small size. Different crystallographic methods, such as small-probe single crystal diffraction, high-resolution fiber diffraction, and powder diffraction combined with molecular modeling, have provided new insights into the atomic-resolution structure of polysaccharide crystals. Challenges still exist in analyzing disorder and defects using low-resolution diffraction data and further integrating molecular modeling methods.
CURRENT OPINION IN CHEMICAL BIOLOGY
(2022)
Article
Plant Sciences
Miranda A. A. Sinnott-Armstrong, Rox Middleton, Yu Ogawa, Gianni Jacucci, Edwige Moyroud, Beverley J. J. Glover, Paula J. J. Rudall, Silvia Vignolini, Michael J. J. Donoghue
Summary: Compared to animals, little is known about the presence of structural color in plants. In fruits, only a few instances have been described, such as the blue color in Viburnum tinus resulting from a disordered multilayered reflector made of lipid droplets. This study explores the evolutionary context of fruit structural color in the Viburnum genus by examining 30 species, using various techniques to identify the presence of photonic structures, understand the color-producing mechanism, and describe the evolution of cell wall architecture. The findings suggest multiple origins of blue fruit color in Viburnum, associated with large photonic structures made of lipid droplets embedded in the cell wall. Examining the full range of color-producing mechanisms in plants will enhance our understanding of fruit color diversity, ecology, and evolution.
Article
Biology
Simona Notova, Francois Bonnardel, Francesca Rosato, Lina Siukstaite, Jessica Schwaiger, Jia Hui Lim, Nicolai Bovin, Annabelle Varrot, Yu Ogawa, Winfried Roemer, Frederique Lisacek, Anne Imberty
Summary: Curated lectin database, structural characterization, and in vitro assays demonstrate the toxic effect of choanoflagellate lectin SaroL-1 on cancer cells through carbohydrate-dependent pore-formation.
COMMUNICATIONS BIOLOGY
(2022)
Article
Chemistry, Physical
Jia Hui Lim, Yun Jing, Sung Park, Yoshiharu Nishiyama, Muriel Veron, Edgar Rauch, Yu Ogawa
Summary: Understanding the defect structure of soft matter at the nanoscale is limited to its external morphology. In this study, we investigated the structural details of kink defects in cellulose nanocrystals (CNCs) using experimental and theoretical methods. By correlating the local crystallographic information and nanoscale morphology, we identified two bending modes with distinct disordered structures at kink points. The drying process strongly influenced the external morphology, leading to an underestimation of the kink population in standard dry conditions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Nives Hribernik, Denisa Vargova, Marlene C. S. Dal Colle, Jia Hui Lim, Giulio Fittolani, Yang Yu, Junki Fujihara, Kai Ludwig, Peter H. Seeberger, Yu Ogawa, Martina Delbianco
Summary: This study demonstrates the designability of oligosaccharides in accessing materials with tunable shapes and properties. Synthetic cellulose-based oligomers were assembled into 2D or 3D rod-like crystallites or elongated aggregates with tunable surfaces, resulting in self-healing supramolecular hydrogels. These synthetic carbohydrate-based materials provide new tools for material scientists and supramolecular chemists.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Drishya Elizebath, Jia Hui Lim, Yoshiharu Nishiyama, Balaraman Vedhanarayanan, Akinori Saeki, Yu Ogawa, Vakayil K. Praveen
Summary: This study demonstrates the unconventional crystal growth mechanism of a supramolecular polymer, Cr-FFOEt, using 3D electron diffraction and time-resolved microscopy. The balance of strong and weak intermolecular interactions in the nonclassical crystal growth leads to the formation of structures beyond the nanoscale, improving the functional properties of the Cr-FFOEt crystals.
