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3005703 
Journal Article 
Dielectric relaxation of long-chain glass-forming monohydroxy alcohols 
Gao, Y; Tu, W; Chen, Z; Tian, Y; Liu, R; Wang, LM 
2013 
Yes 
Journal of Chemical Physics
ISSN: 0021-9606
EISSN: 1089-7690 
139 
16 
164504 
English 
24182046 
The dielectric relaxation of two long-chain glass forming monohydroxy alcohols, 2-butyl-1-octanol and 2-hexyl-1-decanol, is studied at low temperature. Remarkable broadening from the pure Debye relaxation is identified for the slowest dynamics, differing from the dielectric spectra of short-chain alcohols. The broadening of the Debye-like relaxation in the two liquids develops as temperature increases, and the approaching of the Debye-like and structural relaxation widths is shown. Similar results are observed in the dielectric spectra of dilute 2-ethyl-1-hexanol in either 2-hexyl-1-decanol or squalane. The results of the liquids and mixtures reveal a correlation between the broadening and the Debye-like relaxation strength. Molecular associations in monohydroxy alcohols are discussed with the modification of the Debye relaxation. 
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