Hydrogen bonding interactions between ethylene glycol and water: density, excess molar volume, and spectral study

Abstract

Studies of the density and the excess molar volume of ethylene glycol (EG)-water mixtures were carried out to illustrate the hydrogen bonding interactions of EG with water at different temperatures. The results suggest that a likely complex of 3 ethylene glycol molecules bonding with 4 water molecules in an ethylene glycol-water mixture (EGW) is formed at the maximal excess molar volume, which displays stronger absorption capabilities for SO 2 when the concentration of SO 2 reaches 400×10 6 (volume ratio) in the gas phase. Meanwhile, FTIR and UV spectra of EGWs were recorded at various EG concentrations to display the hydrogen bonding interactions of EG with water. The FTIR spectra show that the stretching vibrational band of hydroxyl in the EGWs shifts to a lower frequency and the bending vibrational band of water shifts to a higher frequency with increasing the EG concentration, respectively. Furthermore, the UV spectra show that the electron transferring band of the hydroxyl oxygen in EG shows red shift with increasing the EG concentration. The frequency shifts in FTIR spectra and the shifts of absorption bands in UV absorption spectra of EGWs are interpreted as the strong hydrogen bonding interactions of the hydrogen atoms in water with the hydroxyl oxygen atoms of EG.hydrogen bond, ethylene glycol, water, density, excess molar volume

Galvanostatic deposition of polypyrrole in the presence of tartaric acid for electrochemical supercapacitor

“…2b). The shifted bands indicate the interaction between pyrrole ring and TA (and/ or T À ions) [31]. In addition to these bands, the tartaric acid doped PPy has a stronger absorption band at 3353 cm À1 due to hydrogenbonded N-H stretching vibration, similar to the study by Park et al [31].…”

Chemically Modified Metal Oxide Nanostructures Electrodes for Sensing and Energy Conversion

“…100 This is probably due its strong hydrogen bonding interaction in water with the hydroxyl oxygen atoms of PEG. 101 Therefore, we assume that disruption of hydrogen bonding when dissolved in water is a hydrogenated-environment for growth of ZnO nanostructures (Figure 2.2b). Here, we…”

“…100 This is probably due to its strong hydrogen bonding interaction in water. 101 Therefore, we believe that the disruption of hydrogen bonding when dissolved in water, provides a rich hydrogenated environment for the growth of ZnO NRs. It is important also to note that, hydrogen is relatively very small in volume and the possibility of the incorporation inside the ZnO NRs structure is highly expected.…”

Impact of polybasic alcohols on biocompatibility and selectivity of Penicillin G Acylase for kinetically controlled synthesis

“…As monobasic alcohols have only one hydroxyl group on one end of the molecule to form hydrogen bonds with water, whereas the hydrophobic end of monobasic alcohols are exposed, which is believed to lead to deactivation of enzymes [37]. Recent studies using both FTIR and UV-V's spectroscopies suggest that a likely complex of three ethylene glycol molecules to four water molecules are formed at the maximal excess molar volume in an ethylene glycol-water mixture (EGW) [38]. EGW replacing water in the medium could reduce the water concentration, which most likely explains why ethylene glycol has both high biocompatibility and selectivity effects on PGA catalyzed synthesis.…”