Results 1 to 10 of about 1,584,637 (354)

Dense Hydrogen-Bonding Network Boosts Ionic Conductive Hydrogels with Extremely High Toughness, Rapid Self-Recovery, and Autonomous Adhesion for Human-Motion Detection

open access: yesResearch, 2021
The construction of ionic conductive hydrogels with high transparency, excellent mechanical robustness, high toughness, and rapid self-recovery is highly desired yet challenging.
Bing Zhang   +6 more
doaj   +2 more sources

Cyclopentadienyl coordination induces unexpected ionic Am−N bonding in an americium bipyridyl complex [PDF]

open access: goldNature Communications, 2022
The coordination environment has a great impact on the electronic structure, bonding and properties of metal complexes. Here the authors report a dinuclear organometallic americium complex that displays unexpectedly ionic Am−N bonding, but enhanced ...
Brian N. Long   +7 more
doaj   +2 more sources

Multiscale interface engineering enables strong and water resistant wood bonding [PDF]

open access: yesNature Communications
The growing use of timber in construction has created an urgent need for high-performing engineered wood. Laminating timber facilitates production of structural components, but strong interfacial bonding is essential for engineered wood to outperform ...
Shiying Zhang   +7 more
doaj   +2 more sources

Analysis of Students’ Chemical Bonding Misconception with A Four-Tier Diagnostic Test

open access: yesJTK (Jurnal Tadris Kimiya), 2022
Students had difficulty understanding the chemical bonding concept because of its complex and abstract nature. This difficulty could lead to chemical bonding misconceptions.
Rosyidah Syafaatur Rohmah   +3 more
doaj   +1 more source

Directional Ionic Bonds

open access: yesJournal of the American Chemical Society, 2023
Covalent and ionic bonds represent two fundamental forms of bonding between atoms. In contrast to bonds with significant covalent character, ionic bonds are of limited use for the spatial structuring of matter because of the lack of directionality of the electric field around simple ions. We describe a predictable directional orientation of ionic bonds
Hutskalov, Illia   +2 more
openaire   +3 more sources

A family of ionic supersalts with covalent-like directionality and unconventional multiferroicity

open access: yesNature Communications, 2021
Binary ionic crystals, such as NaCl, are non-polar due to directionless ionic bonding interactions. Here, the authors show that polarity can be developed by using superalkali/superhalogen ions as building blocks, leading to ionic supersalts with ...
Yaxin Gao, Menghao Wu, Puru Jena
doaj   +1 more source

Using electrostatic potential maps as visual representations to promote better understanding of chemical bonding

open access: yesChemistry Teacher International, 2021
Static visual representations (VRs) of chemical structures are necessary for an understanding of chemical bonding, a topic which continues to lead to learning difficulties and misconceptions for many students.
Tsaparlis Georgios   +3 more
doaj   +1 more source

NMR of Natural Products as Potential Drugs

open access: yesMolecules, 2021
This review outlines methods to investigate the structure of natural products with emphasis on intramolecular hydrogen bonding, tautomerism and ionic structures using NMR techniques.
Poul Erik Hansen
doaj   +1 more source

Theoretical investigation of structural, electronic, dielectric and optical characteristics of cubic perovskite BaCeO3 [PDF]

open access: yesProcessing and Application of Ceramics, 2021
Structural, electronic and optical parameters of a cubic perovskite BaCeO3 were calculated using FP-LAPW with WIEN2K code. The calculated band structure confirmed the semiconducting behaviour of BaCeO3 with an indirect band gap of 2.33 eV.
Murali Nandigam   +9 more
doaj   +1 more source

Fabrication of ionic wood crosslinked by Ca2+ with high strength, toughness, and weather resistance

open access: yesJournal of Materials Research and Technology, 2022
Fast-growing natural poplar wood is not meet with in many requirements such as high strength and flame retardant due to its porous structure and loose materials.
Xuefeng Zhang   +5 more
doaj   +1 more source

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