Interplay between the static ordering and dynamical heterogeneities determining the dynamics of rotation and ordinary liquid phases in 1,6-anhydro-β-D-glucose

O Madejczyk; K Kaminski; E Kaminska; K Jurkiewicz; M Tarnacka; A Burian; M Paluch

doi:10.1038/srep42103

Interplay between the static ordering and dynamical heterogeneities determining the dynamics of rotation and ordinary liquid phases in 1,6-anhydro-β-D-glucose

Sci Rep. 2017 Feb 6:7:42103. doi: 10.1038/srep42103.

Authors

O Madejczyk^{1

2}, K Kaminski^{1

2}, E Kaminska³, K Jurkiewicz^{1

2}, M Tarnacka^{1

2}, A Burian^{1

2}, M Paluch^{1

2}

Affiliations

¹ Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland.
² Silesian Center for Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland.
³ Department of Pharmacognosy and Phytochemistry, Medical University of Silesia in Katowice, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, ul. Jagiellonska 4, 41-200 Sosnowiec, Poland.

Abstract

In this letter, we reported thorough the structural and molecular dynamics studies on 1,6-anhydro-β-D-glucose, the second compound reported so far that is capable to form rotator and supercooled liquid phases. In contrast to the data presented for ethanol, temperature dependences of structural dynamics in both phases are very comparable. On the other hand, X ray measurements revealed unusually long range ordering/correlations between molecules in the ODIC (d ≈ 95 Å) and supercooled phases (d ≈ 30-40 Å) of this carbohydrate. Our consideration clearly demonstrated that the interplay between length scales of static range ordering and dynamical heterogeneities as well as internal molecular arrangement seem to be the key to understanding the molecular dynamics of different materials characterized by varying degree of disorder in the vicinity of the glass transition temperature.

Publication types

Research Support, Non-U.S. Gov't