Precise synthesis of amphiphilic diblock copolymers consisting of various ionic liquid-type segments and their influence on physical gelation behavior in water

Yokota, Daichi; Kanazawa, Arihiro; Aoshima, Sadahito

doi:10.1039/d0ra09163d

Cited by 4 publications

(5 citation statements)

References 41 publications

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“…Figure 3b displays the 1 H NMR spectrum of [DMBIm]Br. The peaks at 0.82 ppm (m, 3H, CH 3 ), 1.22 ppm (m, 2H, CH 2 ), 1.68 ppm (m, 2H, CH 2 ), 2.52 ppm (s, 3H, CH 3 ), 3.70 ppm (s, 3H, NCH 3 ), 4.01 ppm (m, 2H, NCH 2 ), and 7.27 ppm (m, 2H, NCH 2 ═) confirm the [DMBIm]Br structure 31–33 …”

Section: Resultsmentioning

confidence: 76%

Synthesis of the ionic liquid 1,2‐dimethyl‐3‐butylimidazole bromide salt and its application in phenolic‐formaldehyde‐resin‐based conductive materials

Yao

Wang

Jin

et al. 2022

J of Applied Polymer Sci

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Herein, the ionic liquid 1,2-dimethyl-3-butylimidazole bromide salt ([DMBIm] Br) was synthesized and its chemical structure was characterized via Fourier transform infrared and 1 H nuclear magnetic resonance spectroscopies. Moreover, to improve the electrical property of the phenolic formaldehyde (PF) resin, PF/[DMBIm]Br systems were prepared via a melt blending and compression-curing process. Furthermore, the effect of [DMBIm]Br content on the thermal stabilities, mechanical properties, electrical properties, and morphologies of the systems was investigated. The thermal stability of the systems increased with [DMBIm]Br addition. The impact strength of the systems improved with increasing [DMBIm]Br content. Additionally, the volume resistance of the systems significantly decreased from 1.02 Â 10 9 to 1.64 Â 10 7 Ω with increasing [DMBIm]Br content from 0 to 1 wt%.

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Section: Resultsmentioning

confidence: 76%

Synthesis of the ionic liquid 1,2‐dimethyl‐3‐butylimidazole bromide salt and its application in phenolic‐formaldehyde‐resin‐based conductive materials

Yao

Wang

Jin

et al. 2022

J of Applied Polymer Sci

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“…Living vinyl ether cationic polymerization was used by Yokota et al . to prepare diblock copolymers of alkyl vinyl ethers (isobutyl, IBVE; octyldecyl, ODVE; phenoxyethyl, PhOEVE) and chloroethyl vinyl ether (CEVE).…”

Section: Synthesesmentioning

confidence: 99%

“… a The chloroethyl vinyl ether segments were modified with various alkyl imidazoles and then anion exchanged, replacing the as-modified chloride with various other anions. b Adapted with permission from Yokota et al; , ©2017 Springer. …”

Section: Synthesesmentioning

confidence: 99%

“…Living vinyl ether cationic polymerization was used by Yokota et al 126 [(dodecylsulfanylthiocarbonyl)sulfanyl]propionic acid as chain transfer agent to make triblock copolymers of methoxy polyethylene glycol (mPEG), styrene (PS), and 4-vinyl benzyl chloride (VBC). The resulting triblock copolymers mPEG-b-PS-b-PVBC were then quaternized with methyl imidazole.…”

Section: Vinyl Monomersmentioning

confidence: 99%

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Polymerized and Colloidal Ionic Liquids─Syntheses and Applications

Li,

Yan,

Texter

2024

Chem. Rev.

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The breadth and importance of polymerized ionic liquids (PILs) are steadily expanding, and this review updates advances and trends in syntheses, properties, and applications over the past five to six years. We begin with an historical overview of the genesis and growth of the PIL field as a subset of materials science. The genesis of ionic liquids (ILs) over nano to meso lengthscales exhibiting 0D, 1D, 2D, and 3D topologies defines colloidal ionic liquids, CILs, which compose a subclass of PILs and provide a synthetic bridge between IL monomers (ILMs) and micro to macroscale PIL materials. The second focus of this review addresses design and syntheses of ILMs and their polymerization reactions to yield PILs and PIL-based materials. A burgeoning diversity of ILMs reflects increasing use of nonimidazolium nuclei and an expanding use of step-growth chemistries in synthesizing PIL materials. Radical chain polymerization remains a primary method of making PILs and reflects an increasing use of controlled polymerization methods.Step-growth chemistries used in creating some CILs utilize extensive cross-linking. This cross-linking is enabled by incorporating reactive functionalities in CILs and PILs, and some of these CILs and PILs may be viewed as exotic cross-linking agents. The third part of this update focuses upon some advances in key properties, including molecular weight, thermal properties, rheology, ion transport, self-healing, and stimuli-responsiveness. Glass transitions, critical solution temperatures, and liquidity are key thermal properties that tie to PIL rheology and viscoelasticity. These properties in turn modulate mechanical properties and ion transport, which are foundational in increasing applications of PILs. Cross-linking in gelation and ionogels and reversible step-growth chemistries are essential for self-healing PILs. Stimuli-responsiveness distinguishes PILs from many other classes of polymers, and it emphasizes the importance of segmentally controlling and tuning solvation in CILs and PILs. The fourth part of this review addresses development of applications, and the diverse scope of such applications supports the increasing importance of PILs in materials science. Adhesion applications are supported by ionogel properties, especially crosslinking and solvation tunable interactions with adjacent phases. Antimicrobial and antifouling applications are consequences of the cationic nature of PILs. Similarly, emulsion and dispersion applications rely on tunable solvation of functional groups and on how such groups interact with continuous phases and substrates. Catalysis is another significant application, and this is an historical tie between ILs and PILs. This component also provides a connection to diverse and porous carbon phases templated by PILs that are catalysts or serve as supports for catalysts. Devices, including sensors and actuators, also rely on solvation tuning and stimuliresponsiveness that include photo and electrochemical stimuli. We conclude our view of applications with 3D printi...

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“…Later, solution properties and the sol-gel transition of the block copolymers were investigated by changing the chemical composition of the hydrophobic block and of the alkyl substituents on cationic units, as well as the counterions. 144 Gelation was were insoluble in water. The solubility and gelation behavior of the amphiphilic diblock copolymers were dependent on the structures of the imidazolium ionic segments.…”

Section: Reviewmentioning

confidence: 99%

Thermoresponsive polycations

Tenhu

Baddam

2023

Polym. Chem.

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Precise synthesis of amphiphilic diblock copolymers consisting of various ionic liquid-type segments and their influence on physical gelation behavior in water

Abstract: Amphiphilic diblock copolymers of hydrophobic and imidazolium salt-containing vinyl ethers were synthesized via living cationic polymerization. The influence of hydrophobic and the ionic-liquid moieties on physical gelation in water was examined.

Cited by 4 publications

References 41 publications

Synthesis of the ionic liquid 1,2‐dimethyl‐3‐butylimidazole bromide salt and its application in phenolic‐formaldehyde‐resin‐based conductive materials

Synthesis of the ionic liquid 1,2‐dimethyl‐3‐butylimidazole bromide salt and its application in phenolic‐formaldehyde‐resin‐based conductive materials

Polymerized and Colloidal Ionic Liquids─Syntheses and Applications

Thermoresponsive polycations

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