The effect of chemical structure on the stability of physical vapor deposited glasses of 1,3,5-triarylbenzene

The Journal of Chemical Physics
Tianyi LiuZahra Fakhraai

Abstract

We detail the formation and properties associated with stable glasses (SG) formed by a series of structural analogues of 1,3-bis(1-naphthyl)-5-(2-naphthyl)benzene (α,α,β-TNB), a well-studied SG former. Five compounds with similar structural properties were synthesized and physical vapor-deposited with a constant deposition rate at various substrate temperatures (Tdep) in the range between 0.73 Tg and 0.96 Tg. These molecules include α,α,β-TNB, 3,5-di(naphthalen-1-yl)-1-phenylbenzene (α,α-P), 9-(3,5-di(naphthalen-1-yl)phenyl)anthracene (α,α-A), 9,9'-(5-(naphthalen-2-yl)-1,3-phenylene)dianthracene (β-AA), and 3,3',5,5'-tetra(naphthalen-1-yl)-1,1'-biphenyl (α,α,α,α-TNBP). Ellipsometry was used to study the transformations from the as-deposited glasses into ordinary glasses (OG). The stability of each film was evaluated by measuring the fictive temperature (Tf) and density difference between the as-deposited glass and OG. It is demonstrated that all five molecules can form SGs upon vapor deposition in this temperature range. In-depth studies on the dependence of the stability of as-deposited glasses upon Tdep were performed with three molecules, α,α,β-TNB, α,α-P, and α,α-A. The general trends of stability were comparable at the sam...Continue Reading

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Citations

Jan 3, 2016·The Journal of Chemical Physics·M TylinskiM D Ediger
Jun 24, 2016·The Journal of Chemical Physics·Xinru Huang, Connie B Roth
Nov 9, 2016·The Journal of Chemical Physics·M TylinskiM D Ediger
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Sep 17, 2020·Proceedings of the National Academy of Sciences of the United States of America·Aixi ZhangZahra Fakhraai
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Jun 3, 2017·The Journal of Chemical Physics·M TylinskiM D Ediger
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Dec 10, 2017·The Journal of Chemical Physics·M D Ediger
Sep 28, 2017·Physical Review Letters·Tianyi LiuZahra Fakhraai
Nov 11, 2019·The Journal of Chemical Physics·Birte RiechersRanko Richert
Dec 10, 2020·The Journal of Chemical Physics·Adam N RaegenJames A Forrest
Jun 24, 2021·Physical Chemistry Chemical Physics : PCCP·Yoshihito SukegawaDaisuke Yokoyama
Aug 1, 2021·Proceedings of the National Academy of Sciences of the United States of America·Yi JinZahra Fakhraai
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Oct 15, 2021·Proceedings of the National Academy of Sciences of the United States of America·Marie E FioriM D Ediger

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