On the mutual relationships between spin probe mobility, free volume and relaxation dynamics in organic glass-formers: Glycerol
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- 作者：J. Barto&scaron ; H. &Scaron ; vajdlenková
- 关键词：Molecular mobility ; ESR ; Free volume ; PALS ; Relaxation dynamics ; BDS
- 刊名：Chemical Physics Letters
- 出版年：2017
- 出版时间：16 February 2017
- 年：2017
- 卷：670
- 期：Complete
- 页码：58-63
- 全文大小：458 K
- 卷排序：670
文摘
Spin probe TEMPO dynamics in glycerol (GL) measured by ESR. Ortho-positronium (o-Ps) annihilation study in GL performed by PALS. The mutual relationships between the characteristic ESR and PALS temperatures Tx1slow,τ≡Tb1L and Tcτ≡Tb2L. The secondary β- and the primary α relaxation from BDS as underlying physical processes influencing or controlling the rotation dynamics of TEMPO and o-Ps annihilation, respectively. β and α relaxation from BDS control rotation dynamics of TEMPO and o-Ps annihilation.