Advances in the molecular design of ionenes for a diverse range of applications

Lee, Jae Sang; Hocken, Alexis; Green, Matthew D.

doi:10.1039/d1me00007a

Cited by 17 publications

(16 citation statements)

References 107 publications

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“…For comprehensive reviews on charged polymers for specific applications or reviews on specific types of charged polymers, the reader is directed elsewhere. [ 2–4,6,7,10,18,19,25,28–40 ]…”

Section: Morphology Ion Correlations and Materials Performancementioning

confidence: 99%

“…For comprehensive reviews on charged polymers for specific applications or reviews on specific types of charged polymers, the reader is directed elsewhere. [2][3][4]6,7,10,18,19,25,[28][29][30][31][32][33][34][35][36][37][38][39][40] High ionic conductivity is one of the most common central goals encompassing electrolytic design. Historically, there has been a tradeoff between conductivity and mechanical strength for BPEs [41] but there have been substantial efforts to find support blocks which contribute to ion transport.…”

Section: Morphology Ion Correlations and Materials Performancementioning

confidence: 99%

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Thermodynamics and Structure–Property Relationships of Charged Block Polymers

Grim

Green

2022

Macro Chemistry & Physics

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Advancements in electronics and energy storage and conversion technologies brings with it myriads of exciting material design challenges. Charge-containing block polymers (BPs) offer unique features which can overcome some of these challenges and have thus aroused substantial interest within the field of designer soft materials. The properties of BPs are intricately coupled to the dynamic and rich nature of the nanostructured assemblies, which result from the phase separation between blocks. The introduction of strong secondary forces, such as electrostatics and hydrogen bonding (H-bonding), into BPs greatly influences their self-assembly behavior, and therefore affects their physical and electrochemical properties often in nontrivial ways. In this review, some of the prevailing research, which has expanded the understanding of structure-property relationships to include several design strategies for improving ionic conductivity and modulus in charged block polymers, is presented. The profound extent to which electrostatics and hydrogen bonding impact block polymer thermodynamics, an extent which is demonstrated by recent theoretical and experimental work, is also highlight. Insights gained from the research presented here help to lay the groundwork for a long and bright future in the field of advanced soft materials.

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Section: Morphology Ion Correlations and Materials Performancementioning

confidence: 99%

Section: Morphology Ion Correlations and Materials Performancementioning

confidence: 99%

Thermodynamics and Structure–Property Relationships of Charged Block Polymers

Grim

Green

2022

Macro Chemistry & Physics

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“…1−4 From a practical point of view, the different ionene molecular structures provide tunable performance for a wide range of applications, such as gas separation processes, 5−7 biomedical applications, 8,9 batteries, 10,11 and other applications. 1,12,13 Historically, Gibbs et al 14 were the first to synthesize ammonium-based ionenes. Since then, ionenes based on different cation and anion motifs have been experimentally synthesized.…”

Section: Introductionmentioning

confidence: 99%

Martini Coarse-Grained Model for Poly(alkylimidazolium) Ionenes and Applications in Aromatic Compound Extraction

Barbosa

Turner

2021

Macromolecules

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Ionenes are a class of ionic polymers in which the charged groups are incorporated within the polymer backbone. The combination of strong electrostatic interactions and the underlying molecular architecture can lead to a wide range of thermophysical behaviors, with applications ranging from gas separation membranes to electrochemical systems. In order to accelerate the investigation of these materials, we propose a coarse-grained molecular model for a poly(alkylimidazolium) ionene, based on the Martini 3 force field. Although all-atom molecular simulations of ionenes have been previously performed, to the best of our knowledge, coarse-grained models of imidazolium-based ionenes are yet to be developed or tested. We perform benchmark comparisons against all-atom molecular dynamics simulations, and then, we use the more computationally efficient coarse-grained model to investigate the ionene performance for the selective absorption of benzene from an octane−benzene mixture. Our results show good performance of poly(alkylimidazolium tetrafluoroborate) for benzene extraction from the mixture, in terms of selectivity and solubility.

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“…Poly(ionic liquid)s or PILs are ion-containing polymers where the ionic liquid group is pendant to the backbone in the repeating unit 8,9 while ionenes have the ionic liquid group directly in the backbone of the polymer. [10][11][12] As the desire to create materials with highly tunable mechanical and conductive properties continues to increase, chemists and engineers must continuously investigate novel ways to incorporate ionic liquid groups into macromolecular architectures, decipher the often difficult relationships between ionic conductivity, morphology and polymer structure, and improve processability.…”

Section: Introductionmentioning

confidence: 99%

“…10 Examples have included using S N 2 Menshutkin, polyesterification or polyurethane chemistry while more recent efforts have focused on strategic placement of the IL moiety on the backbone in order to enhance conductivity. 7,[11][12][13][14][15][16][17] Regardless of the architectural methodology, PILs and ionenes act as single ion transporters since one of the ions (typically the cation) is covalently bound into the repeating unit. A number of key factors influence ionic conductivity, including polymer morphology, polymer chain relaxation (related to the glass transition temperature (T g )), and ion concentration and mobility.…”

Section: Introductionmentioning

confidence: 99%