| Literature DB >> 16970421 |
Toshiyuki Shikata1, Rintaro Takahashi, Takeshi Onji, Yuichi Satokawa, Akira Harada.
Abstract
High-frequency dielectric relaxation behavior up to 20 GHz was investigated for plain (alpha, beta, gamma) and (62 and 100%) methylated cyclodextrins, CDs, in dimethyl sulfoxide, DMSO, solution. Each hydrogen atom of OH groups of the CDs solvated a DMSO molecule for a residence time of 130-180 ps due to the hydrogen bond formation to an oxygen atom of DMSO, and a few DMSO molecules were included in cavities of the CDs for a while similar to the residence time. The overall rotational relaxation modes of solvated CDs were also observed depending on the effective sizes of the solvated CDs.Entities:
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Year: 2006 PMID： 16970421 DOI： 10.1021/jp0645667
Source DB: PubMed Journal: J Phys Chem B ISSN： 1520-5207 Impact factor: 2.991