Hydrogen-bonding (H-bonding), as a type of dynamic chemical bond, is a dynamic, directional, and specific non-covalent bond. The energy of H-bonding (approximately 10–65 kJ mol−1) is stronger than that of most other non-covalent bonds such as the π-π interaction (typically bel...
Meanwhile, PA may form additional hydrogen bonds with gelatin, enhancing its adhesion strength to biological tissues. In comparison to traditional gelatin-based bioadhesives, the developed CPTG bioadhesive can achieve significant enhancements in adhesion energy and injectability at temperatures as low as 8...
they form self-sorted assemblies, so that urea–urea hydrogen bonds are maximized19. By analogy, we designed an unsymmetrical trisurea sticker where the three urea groups are connected by two spacers of unequal lengths (Fig.1a). We anticipated that this unsymmetrical sticker would be able to ...
In this study, we report a design scheme for epoxy coating with intrinsic self-healing properties based on active multiple hydrogen bonds. Grafting aminobenzothiazole at the end of polyetheramine D230 chain, the grafted polyetheramine (GD230) was synthesized and served as the auxiliary curing agent,...
Answer to: Water molecules rely on [{Blank}] to hold them together. A)ionic bonds B)hydrogen bonds C)polar covalent bonds D)nonpolar covalent bonds...
showed that the length of the alkylene spacer connecting two urea groups plays an essential role: if two bisurea stickers differing by the size of the alkylene spacer are mixed, they form self-sorted assemblies, so that urea–urea hydrogen bonds are maximized19. By analogy, we designed an ...
locally unfolded states in solution. Deuterium exchange occurs at these moments when a region of protein structure is temporarily loosened up and thehydrogen bondsare momentarily interrupted. If the refolding of such a temporarily more exposed region is slower than the deuterium uptake rate, the ...
dynamic chemical bonds incorporating flexible side chains should be considered and introduced into the design and synthesis of organic semiconductors. Under the action of external forces, the dynamic bonds can readily be broken to allow energy dissipation upon strain, making the system more tolerant to...
How many hydrogen bonds are formed between one A-T base pair?How many covalent bonds can be formed by atoms of carbon, oxygen, nitrogen, and hydrogen?On average, how many hydrogen bonds does any water molecule form with neighboring waters in liquid water? Draw a diagram of wat...
(408.1 eV), where only the former one is enhanced under light irradiation, indicating that the π-conjugated structure in C-Dots involves the C 2p and N 2p-hybridized orbitals and enables the π electrons to be delocalized across C=N bonds instead of being localized. As a result, ...