In particular, their cooperation with electrostatic, dispersion and 蟺 interactions embodies the physical nature of H-bonds in ILs, which anomalously influences their properties, leading to a decrease in their melting points and viscosities and thus fluidizing them. Using ILs as catalysts and solvents...
The protein and MXene Ti3C2Tx were bonded by hydrogen bonds due to their abundant hydrogen bond donors and acceptors. The electrical characteristics of the composite biomaterial could be modified without changing the quantity of each component by varying the number of repeating amino acid sequence ...
The enhanced ORR activity is attributed to strengthened hydrogen bonds between ORR products and ionic liquids with comparable pKas, resulting in favourable PCET kinetics. This proposed mechanism is supported by in situ surface-enhanced Fourier-transform infrared spectroscopy and our simulation of PCET ...
Although hydrogen bond is ≈10 times weaker (bonding energy 5–30 kJ mol−1) than the typical hydrogen bonds (bonding energy ≈345 kJ mol−1), it has a prominent effect on the viscoelastic properties, phase separation, and the degree of crystallinity of the polymers. Single hydrogen ...
An accurate description of the ultrafast vibrational motion of water molecules is essential for understanding the nature of hydrogen bonds and many solution-phase chemical reactions. Most existing knowledge of vibrational relaxation in water is built upon ultrafast spectroscopy experiments2,3,4,5,6,7....
Hydrogen bonds are not particularly strong,with a bond strength of about 4–40 kJmol-1(kilojoules per mol). However, in systems that contain a lot of hydrogen bonds, their strengths can add up, and they can give out or take up a substantial amount of energy when they form or break, ...
Localized clusters of hydrogen bonds still remain, however; these are continually breaking and reforming as the thermal motions jiggle and shove the individual molecules. As the temperature of the water is raised above freezing, the extent and lifetimes ofthese clusters diminish, so the density of ...
OH−and H+.14,15,16Beyond pure proton conductors, mixed proton and electronic (eitherp-type17orn-type4) conduction occurs in certain oxides of multivalent ions. The rich compositional space available to these classes of inorganic conductors suggests their properties can be tuned to potentially ...
3D photonic crystals (PCs) have attracted extensive attention due to their unique optical properties. However, fabricating 3D PCs structure by 3D printing colloidal particles is limited by control of assembly under a fast-printing speed. Here, we employ
2d), clearly showing their hierarchical structure to enable fast transport. O and C are homogeneously distributed, i.e., the OH groups are evenly distributed (Fig. 2f, h). The porous properties were confirmed via N2 physical adsorption isotherms (Fig. S2). The steep increase uptakes at low...