TY - JOUR
T1 - Molecular engineering of the glass transition
T2 - Glass-forming ability across a homologous series of cyclic stilbenes
AU - Ping, Wen
AU - Paraska, Daniel
AU - Baker, Robert
AU - Harrowell, Peter
AU - Angell, Charles
PY - 2011/4/28
Y1 - 2011/4/28
N2 - 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, for the 1,2-diphenylcyclohexene, of the reduced glass transition temperature Tg/Tm. Since the nonmonotonic trend in Tg/Tm is entirely due to variations in T m, we conclude that the design target for maximizing the glass-forming ability across an homologous series should focus on the crystal stability and the factors that determine it.
AB - 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, for the 1,2-diphenylcyclohexene, of the reduced glass transition temperature Tg/Tm. Since the nonmonotonic trend in Tg/Tm is entirely due to variations in T m, we conclude that the design target for maximizing the glass-forming ability across an homologous series should focus on the crystal stability and the factors that determine it.
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U2 - 10.1021/jp110975y
DO - 10.1021/jp110975y
M3 - Article
C2 - 21466210
AN - SCOPUS:79955401294
VL - 115
SP - 4696
EP - 4702
JO - Journal of Physical Chemistry B
JF - Journal of Physical Chemistry B
SN - 1520-6106
IS - 16
ER -