Carbon-13 NMR Study of the Effect of Confinement on the Molecular Dynamics of 2-Ethylhexyl Benzoate was written by Sullivan, Vivian S.;Kim, Yoo Joong;Xu, Shu;Jonas, Jiri;Korb, J.-P.. And the article was included in Langmuir in 1999.Application of 5444-75-7 The following contents are mentioned in the article:
Spin-lattice relaxation times of individual carbons in 2-ethylhexyl benzoate (EHB) in bulk and confined to porous silica glasses of pore radii of 33, 52, and 102 Å were measured as a function of temperature from +40 to -51 °C. The two-state fast exchange model was successfully applied, in the wide temperature range including beyond the motional narrowing regime, to determine the spin-lattice relaxation times of the mols. in the surface layer (T1S) as a function of temperature The Cole-Davidson distribution model was used to analyze the relaxation data for both the bulk (T1B) and surface layer (T1S) of the confined liquid The line broadening of confined EHB at lower temperatures below -21 °C inherently limited the temperature range over which T1S could be estimated and prevented the quant. anal. of T1S by the model. Through the phenomenol. comparison of T1S with T1B in terms of the parameters of the Cole-Davidson model, it was found that the motional behavior of the Ph ring part of the EHB mol. was significantly affected by the surface interaction and the effect is smaller for the flexible alkyl chain. Small temperature dependence of the relaxation rate of T1S at motional narrowing regime showed a characteristic feature of liquid diffusing on a two-dimensional surface. In addition, the results of the quant. anal. of T1B were compared with a previous experiment performed as a function of pressure. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Application of 5444-75-7).
2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Carboxylic acid esters of low molecular weight are colourless, volatile liquids with pleasant odours, slightly soluble in water. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Application of 5444-75-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics