Communication

Slow supramolecular mode in amine and thiol derivatives of 2-ethyl-1-hexanol revealed by combined dielectric and shear-mechanical studies

Karolina Adrjanowicz, Bo Jakobsen, Tina Hecksher, Kamil Kaminski, Mateusz Dulski, Marian Paluch, Kristine Niss

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

In this paper, we present results of dielectric and shear-mechanical studies for amine (2-ethyl-1-hexylamine) and thiol (2-ethyl-1-hexanethiol) derivatives of the monohydroxy alcohol, 2-ethyl-1-hexanol. The amine and thiol can form hydrogen bonds weaker in strength than those of the alcohol. The combination of dielectric and shear-mechanical data enables us to reveal the presence of a relaxation mode slower than the α-relaxation. This mode is analogous to the Debye mode seen in monohydroxy alcohols and demonstrates that supramolecular structures are present for systems with lower hydrogen bonding strength. We report some key features accompanying the decrease in the strength of the hydrogen bonding interactions on the relaxationdynamics close to the glass-transition. This includes changes (i) in the amplitude of the Debye and α-relaxations and (ii) the separation between primary and secondary modes
Original languageEnglish
Article number181102
JournalJournal of Chemical Physics
Volume143
ISSN0021-9606
DOIs
Publication statusPublished - 12 Nov 2015

Cite this

@article{8c6242f28b2f456394253d4f27de14d4,
title = "Communication: Slow supramolecular mode in amine and thiol derivatives of 2-ethyl-1-hexanol revealed by combined dielectric and shear-mechanical studies",
abstract = "In this paper, we present results of dielectric and shear-mechanical studies for amine (2-ethyl-1-hexylamine) and thiol (2-ethyl-1-hexanethiol) derivatives of the monohydroxy alcohol, 2-ethyl-1-hexanol. The amine and thiol can form hydrogen bonds weaker in strength than those of the alcohol. The combination of dielectric and shear-mechanical data enables us to reveal the presence of a relaxation mode slower than the α-relaxation. This mode is analogous to the Debye mode seen in monohydroxy alcohols and demonstrates that supramolecular structures are present for systems with lower hydrogen bonding strength. We report some key features accompanying the decrease in the strength of the hydrogen bonding interactions on the relaxationdynamics close to the glass-transition. This includes changes (i) in the amplitude of the Debye and α-relaxations and (ii) the separation between primary and secondary modes",
author = "Karolina Adrjanowicz and Bo Jakobsen and Tina Hecksher and Kamil Kaminski and Mateusz Dulski and Marian Paluch and Kristine Niss",
year = "2015",
month = "11",
day = "12",
doi = "10.1063/1.4935510",
language = "English",
volume = "143",
journal = "Journal of Chemical Physics",
issn = "0021-9606",
publisher = "American Institute of Physics",

}

Communication : Slow supramolecular mode in amine and thiol derivatives of 2-ethyl-1-hexanol revealed by combined dielectric and shear-mechanical studies. / Adrjanowicz, Karolina; Jakobsen, Bo; Hecksher, Tina; Kaminski, Kamil ; Dulski, Mateusz; Paluch, Marian; Niss, Kristine.

In: Journal of Chemical Physics, Vol. 143, 181102, 12.11.2015.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Communication

T2 - Slow supramolecular mode in amine and thiol derivatives of 2-ethyl-1-hexanol revealed by combined dielectric and shear-mechanical studies

AU - Adrjanowicz, Karolina

AU - Jakobsen, Bo

AU - Hecksher, Tina

AU - Kaminski, Kamil

AU - Dulski, Mateusz

AU - Paluch, Marian

AU - Niss, Kristine

PY - 2015/11/12

Y1 - 2015/11/12

N2 - In this paper, we present results of dielectric and shear-mechanical studies for amine (2-ethyl-1-hexylamine) and thiol (2-ethyl-1-hexanethiol) derivatives of the monohydroxy alcohol, 2-ethyl-1-hexanol. The amine and thiol can form hydrogen bonds weaker in strength than those of the alcohol. The combination of dielectric and shear-mechanical data enables us to reveal the presence of a relaxation mode slower than the α-relaxation. This mode is analogous to the Debye mode seen in monohydroxy alcohols and demonstrates that supramolecular structures are present for systems with lower hydrogen bonding strength. We report some key features accompanying the decrease in the strength of the hydrogen bonding interactions on the relaxationdynamics close to the glass-transition. This includes changes (i) in the amplitude of the Debye and α-relaxations and (ii) the separation between primary and secondary modes

AB - In this paper, we present results of dielectric and shear-mechanical studies for amine (2-ethyl-1-hexylamine) and thiol (2-ethyl-1-hexanethiol) derivatives of the monohydroxy alcohol, 2-ethyl-1-hexanol. The amine and thiol can form hydrogen bonds weaker in strength than those of the alcohol. The combination of dielectric and shear-mechanical data enables us to reveal the presence of a relaxation mode slower than the α-relaxation. This mode is analogous to the Debye mode seen in monohydroxy alcohols and demonstrates that supramolecular structures are present for systems with lower hydrogen bonding strength. We report some key features accompanying the decrease in the strength of the hydrogen bonding interactions on the relaxationdynamics close to the glass-transition. This includes changes (i) in the amplitude of the Debye and α-relaxations and (ii) the separation between primary and secondary modes

U2 - 10.1063/1.4935510

DO - 10.1063/1.4935510

M3 - Journal article

VL - 143

JO - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

M1 - 181102

ER -