Details
| Original language | English |
|---|---|
| Pages (from-to) | 9699-9701 |
| Number of pages | 3 |
| Journal | Journal of Chemical Physics |
| Volume | 107 |
| Issue number | 22 |
| Publication status | Published - 8 Dec 1997 |
| Externally published | Yes |
Abstract
Broadband dielectric spectroscopy (10-2-1.8×109 Hz) is employed to study the molecular dynamics of the glass-forming hydrogen-bonded liquid propanediol confined to mesoporous M41S silica materials having two different topologies. It is shown that the dynamic glass transition takes place in the mesoporous system (diameter 2.7 nm). With respect to the bulk its relaxation rates are decreased when approaching the calorimetric glass transition. Silanization of the inner surfaces acts as a molecular lubrication and makes the molecular dynamics of the confined liquid comparable to the bulk.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
- Chemistry(all)
- Physical and Theoretical Chemistry
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In: Journal of Chemical Physics, Vol. 107, No. 22, 08.12.1997, p. 9699-9701.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Dielectric investigations of the molecular dynamics of propanediol in mesoporous silica materials
AU - Huwe, A.
AU - Arndt, M.
AU - Kremer, F.
AU - Haggenmüller, C.
AU - Behrens, P.
PY - 1997/12/8
Y1 - 1997/12/8
N2 - Broadband dielectric spectroscopy (10-2-1.8×109 Hz) is employed to study the molecular dynamics of the glass-forming hydrogen-bonded liquid propanediol confined to mesoporous M41S silica materials having two different topologies. It is shown that the dynamic glass transition takes place in the mesoporous system (diameter 2.7 nm). With respect to the bulk its relaxation rates are decreased when approaching the calorimetric glass transition. Silanization of the inner surfaces acts as a molecular lubrication and makes the molecular dynamics of the confined liquid comparable to the bulk.
AB - Broadband dielectric spectroscopy (10-2-1.8×109 Hz) is employed to study the molecular dynamics of the glass-forming hydrogen-bonded liquid propanediol confined to mesoporous M41S silica materials having two different topologies. It is shown that the dynamic glass transition takes place in the mesoporous system (diameter 2.7 nm). With respect to the bulk its relaxation rates are decreased when approaching the calorimetric glass transition. Silanization of the inner surfaces acts as a molecular lubrication and makes the molecular dynamics of the confined liquid comparable to the bulk.
UR - http://www.scopus.com/inward/record.url?scp=0001092511&partnerID=8YFLogxK
U2 - 10.1063/1.475265
DO - 10.1063/1.475265
M3 - Article
AN - SCOPUS:0001092511
VL - 107
SP - 9699
EP - 9701
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 22
ER -