Synthesis, characterization, and ionic conductivity of alternating copolymers containing organo-.lambda.5-phosphazenes with polyether side chains

1993 ◽  
Vol 5 (5) ◽  
pp. 705-708 ◽  
Author(s):  
Martin Pomerantz ◽  
Ganapathy Krishnan ◽  
Mark W. Victor ◽  
Chang Wei ◽  
Krishnan Rajeshwar
Keyword(s):  
Ionic Conductivity ◽  
Side Chains ◽  
Alternating Copolymers

scholarly journals Morphological effect of side chain on H3O+ transfer inside polymer electrolyte membranes across polymeric chain via molecular dynamics simulation

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
JinHyeok Cha
Keyword(s):  
Fuel Cell ◽  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Dynamics Simulation ◽  
Polymeric Chain ◽  
Side Chains ◽  
Dynamic Simulations ◽  
Morphological Effect ◽  
Electrolyte Membrane

AbstractPerformance and durability of polymer electrolyte membrane are critical to fuel cell quality. As fuel cell vehicles become increasingly popular, membrane fundamentals must be understood in detail. Here, this study used molecular dynamic simulations to explore the morphological effects of perfluorosulfonic acid (PFSA)-based membranes on ionic conductivity. In particular, I developed an intuitive quantitative approach focusing principally on hydronium adsorbing to, and desorbing from, negatively charged sulfonate groups, while conventional ionic conductivity calculations featured the use of mean square displacements that included natural atomic vibrations. The results revealed that shorter side-chains caused more hydroniums to enter the conductive state, associated with higher ion conductivity. In addition, the hydronium path tracking showed that shorter side-chains allowed hydroniums to move among host groups, facilitating chain adsorption, in agreement with a mechanism suggested in earlier studies.

Synthesis and photovoltaic properties of thiophene–imide-fused thiophene alternating copolymers with different alkyl side chains

2011 ◽  
Vol 21 (33) ◽  
pp. 12454 ◽  
Author(s):  
Tomokazu Umeyama ◽  
Masaaki Oodoi ◽  
Osamu Yoshikawa ◽  
Takashi Sagawa ◽  
Susumu Yoshikawa ◽  
...  
Keyword(s):  
Side Chains ◽  
Photovoltaic Properties ◽  
Alternating Copolymers ◽  
Alkyl Side Chains

Poly(ionic liquid)s with branched side chains: polymer design for breaking the conventional record of ionic conductivity

2021 ◽  
Vol 12 (5) ◽  
pp. 711-718
Author(s):  
Taichi Ikeda
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Side Chains ◽  
Single Ion Conductors ◽  
Poly Ionic Liquid ◽  
Ion Conductors

Poly(ionic liquid)s with branched side chains can break the conventional record of ionic conductivity of single-ion conductors.

Bithiophene-bithiazole alternating copolymers with thiophene side chains: Synthesis by organometallic polycondensation and chemical properties of the copolymers

2011 ◽  
Vol 49 (6) ◽  
pp. 1508-1512 ◽  
Author(s):  
Takakazu Yamamoto ◽  
Syun-Ichi Otsuka ◽  
Hiroki Fukumoto ◽  
Yoshimasa Sakai ◽  
Shinji Aramaki ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Side Chains ◽  
Alternating Copolymers ◽  
And Chemical Properties
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