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How do high pressures change the Debye process of 4-methyl-3-heptanol?
Pawlus, S; Wikarek, M; Gainaru, C; Paluch, M; Böhmer, R.
Afiliação
  • Pawlus S; Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland.
J Chem Phys ; 139(6): 064501, 2013 Aug 14.
Article em En | MEDLINE | ID: mdl-23947865
4-methyl-3-heptanol, a monohydroxy alcohol with a relatively small dielectric Debye process, is studied in wide ranges of temperature (143 K < T < 308 K) and pressure (0.1 MPa < p < 864 MPa). When monitored under isochronous conditions, i.e., focusing on constant relaxation times, as well as under isothermal conditions, the Debye process gains significant intensity upon pressure application. This behavior contrasts with that of the previously studied octanol 2-ethyl-1-hexanol, which features a large Debye process. These experimentally observed, clearly distinguishable pressure evolutions are discussed to reflect differences in the formation of hydrogen-bonded supramolecular structures.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Chem Phys Ano de publicação: 2013 Tipo de documento: Article País de afiliação: Polônia País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Chem Phys Ano de publicação: 2013 Tipo de documento: Article País de afiliação: Polônia País de publicação: Estados Unidos