Chemistry Letters, Vol.30, No.3, 198-199, 2001
Temperature dependence of the anomalous conformational behavior of a short-chain poly(oxyethylene) in water studied by Raman spectroscopy
The Raman spectra of aqueous solutions of CH3(OCH2CH2)(3)OCH3 were measured for mole fractions 0.002-0.06 at five temperatures between 5 and 45 degreesC. The population of the gauche conformation around the C-C bond shows its maximum at about 0.01 mole fraction. The appearance of the maximum is less prominent at higher temperatures. The observed conformational behavior is consistent with the results of molecular dynamics simulations.