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Title: Influence of Chain Rigidity and Dielectric Constant on the Glass Transition Temperature in Polymerized Ionic Liquids

Journal Article · · Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry
 [1];  [2];  [1];  [3];  [4];  [1];  [5];  [5];  [1];  [1];  [6];  [4];  [6]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division; Univ. of Silesia, Katowice (Poland). Inst. of Physics; Silesian Center for Education and Interdisciplinary Research, Chorzow (Poland)
  3. Univ. of Cincinnati, OH (United States). Dept. of Aerospace Engineering & Engineering Mechanics
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences. Computational Sciences & Engineering Division
  5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry

Polymerized ionic liquids (PolyILs) are promising candidates for a wide range of technological applications due to their single ion conductivity and good mechanical properties. Tuning the glass transition temperature (Tg) in these materials constitutes a major strategy to improve room temperature conductivity while controlling their mechanical properties. In this paper, we show experimental and simulation results demonstrating that in these materials Tg does not follow a universal scaling behavior with the volume of the structural units Vm (including monomer and counterion). Instead, Tg is significantly influenced by the chain flexibility and polymer dielectric constant. We propose a simplified empirical model that includes the electrostatic interactions and chain flexibility to describe Tg in PolyILs. Finally, our model enables design of new functional PolyILs with the desired Tg.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Silesia, Katowice (Poland); Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); ORNL Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); National Science Centre (Poland)
Grant/Contract Number:
AC05-00OR22725; DMR-1408811; DEC-2014/15/B/ST3/04246
OSTI ID:
1423008
Journal Information:
Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces and Biophysical Chemistry, Vol. 121, Issue 51; ISSN 1520-6106
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

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Cited By (7)

Structural and Mechanical Properties of Ionic Di-block Copolymers via a Molecular Dynamics Approach journal September 2019
Structure and dynamics of short-chain polymerized ionic liquids journal July 2019
Structural correlations tailor conductive properties in polymerized ionic liquids journal January 2019
Ion transport in polymeric ionic liquids: recent developments and open questions journal January 2019
Electrical Properties of Thiol-ene-based Shape Memory Polymers Intended for Flexible Electronics journal May 2019
Neat Linear Polysiloxane-Based Ionic Polymers: Insights into Structure-Based Property Modifications and Applications journal December 2020
Miscibility and Nanoparticle Diffusion in Ionic Nanocomposites text January 2018