Hydrogen bonds are so strong that they cause appreciable alignment of the molecules involved. The strength and directional character of hydrogen bonds are responsible for many of the unique properties of water[27]. View article Chapter Nanoparticle Ecotoxicology Engineered Nanoparticles Book2016, ...
One factor that makes water unique even among other hydrogen-bonded liquids is its very small mass in relation to the large number of hydrogen bonds it can form. Owing to disruptions of these weak attractions by thermal motions, the lifetime of any single hydrogen bond is very short — on ...
Describe what it is about water molecules that give them their emergent properties. How could you separate salt dissolved in water? Why are hydrogen ions never found in an aqueous solution? How can you separate compounds? Why is CH4 not capable of forming hydrogen bonds?
MB-MD simulations indicate that the two OH bonds on the second water are relatively free to rotate (on a timescale of ~0.50 ps) due to lack of specific interactions with the framework. The decomposition of the theoretical IR spectrum in terms of individual OH-stretch contributions (pink ...
Liquid water, a system intensively studied in the search for a rationale for its unique properties and many unsolved anomalies1, has been long unanimously believed to have a dominating structure with a symmetric "ice-like" tetrahedral coordination assured by the two-donor and two-acceptor bonding ...
In the same period it became clear that anomalous properties of bulk water are due to the formation of hydrogen bonds. An important paper on this issue was published in 1933 by Bernal and Fowler (despite their not using the term hydrogen bond). The idea was then extended to other “...
By adjusting the number, distribution, and strength of hydrogen bonds, we aim to understand the structure–property relationships of zwitterionic materials. Consequently, we have developed a series of supramolecular zwitterionic polymers with unique properties [14, 29, 30]. Notably, we have ...
Flexibility: Rearrangement of H-bonds can provide structural changes to generate functionality. Such intrinsic properties of HOFs, however, simultaneously cause the following problems. Namely, HOFs tend to collapse during activation (removing of solvent molecules from voids). HOFs are not easy to design...
Liquid water consists of a mixture of short, straight and strong hydrogen bonds and long, weak and bent hydrogen bonds with many intermediates between these extremes. Short hydrogen bonds in water are strongly correlated with them being straighter. Shorter hydrogen bonds are stronger. The stronger ...
Additionally, they have a unique central NPA (Asn-Pro-Ala) sequence allowing the neighboring waters to assemble with opposite dipolar orientations (Fig. 1b). At this narrowest site of the pore, one water is doubly connected via acceptor H-bonds to its oxygen atom with adjacent amino groups...