Regensburg 2013 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 14: Crystallization, Nucleation and Self Assembly I
CPP 14.13: Vortrag
Dienstag, 12. März 2013, 12:45–13:00, H39
Glass transition and recristallization of alcohols in silica nanochannels — •Daniel Rau1, Rolf Pelster1, Tommy Hofmann2, Dirk Wallacher3, and Patrick Huber4 — 1FR 7.2 Experimentalphysik, Universität des Saarlandes — 2Helmholtz Zentrum Berlin, Inst Complex Magnet Mat, D-14109 Berlin, Germany — 3Helmholtz Zentrum Berlin, Dept Sample Environm, D-14109 Berlin, Germany — 4Hamburg Univ Technol, Inst Mat Phys & Technol, D-21073 Hamburg, Germany
We studied the molecular dynamics and glass transition of n-alcohol confined in electrochemical etched silica nanochannels using broadband dielectric spectroscopy and neutron scattering. In contrast to the bulk alcohol confined alcohol exhibits a glass transition upon slow cooling but partial recrystallization occurs upon heating. This behaviour reflects the different temperature dependences of nucleation and crystal growth.