Molecular Engineering of the Glass Transition: Glass-Forming Ability across a Homologous Series of Cyclic Stilbenes
作者:Wen Ping、Daniel Paraska、Robert Baker、Peter Harrowell、C. Austen Angell
DOI:10.1021/jp110975y
日期:2011.4.28
We report on the glass-forming abilities of the homologous series 1,2-diphenylcyclo-butene, pentene, hexene and heptene−a series that retains the cis-phenyl configuration characteristic of the well-studied glass former, o-terphenyl. We find that the glass-forming ability shows a sharp maximum for the six-membered ring and demonstrate that this trend in glass-forming ability is a consequence of a maximum
我们报告了同源系列1,2-二苯环丁烯,戊烯,己烯和庚烯的玻璃形成能力,该系列保留了经过充分研究的玻璃形成剂邻三联苯的顺式-苯基构型特征。我们发现,六元环的玻璃形成能力显示出极大的最大值,并证明这种玻璃形成能力的趋势是降低的玻璃化转变温度T对于1,2-二苯基环己烯最大的结果。克/吨米。由于T g / T m的非单调趋势完全归因于T m的变化,我们得出结论,在整个同源系列中最大程度地提高玻璃形成能力的设计目标应集中在晶体稳定性和决定其稳定性的因素上。