title: [Temperature effect on the hydrogen bonding behavior between DMSO and water in aqueous DMSO solutions studied by raman spectroscopy].
abstract: In the present paper, DMSO/H2O mixture with the ratio of volume 1:1 was measured in the cooling process by Raman spectroscopy, and the Raman assignments was made to the DMSO molecular and water molecular. The results showed that the behavior between intra-molecular hydrogen bonds and inter-molecular hydrogen bonds of DMSO and water leads to the change in the Raman spectra of the S==O stretching vibration of DMSO and the O--H stretching vibration of water. Further analysis showed that the hydrogen bond between DMSO and water was enhanced in the course of temperature decreasing process (27 to -30 degrees C), and the intramolecular hydrogen bonds between water and water replaced the intermolecular hydrogen bonds of DMSO and water in the course of temperature decreasing process (-30 to -60 degrees C). The research provides experimental basis for hydrogen bonding theory in aqueous solution.
authors.affiliation: College of Physics, Jilin University, Changchun 130023, China. ouyangshunli@imust.cn
authors.forename: Shun-li
authors.initials: SL
authors.lastname: Ouyang
authors.affiliation: Key Laboratory for Molecular Enzymology and Engineering, Ministry of Education, Jilin University, Changchun 130023, China.
authors.forename: Zheng-qiang
authors.initials: ZQ
authors.lastname: Li
authors.affiliation: College of Physics, Jilin University, Changchun 130023, China.
authors.forename: Nan-nan
authors.initials: NN
authors.lastname: Wu
authors.affiliation: College of Physics, Jilin University, Changchun 130023, China.
authors.forename: Zuo-wei
authors.initials: ZW
authors.lastname: Li
authors.affiliation: College of Physics, Jilin University, Changchun 130023, China.
authors.forename: Cheng-lin
authors.initials: CL
authors.lastname: Sun
authors.affiliation: College of Physics, Jilin University, Changchun 130023, China.
authors.forename: Li-mei
authors.initials: LM
authors.lastname: Fan