Ion Gels Prepared by in Situ Radical Polymerization of Vinyl Monomers in an Ionic Liquid and Their Characterization as Polymer Electrolytes

Susan, Md. Abu Bin Hasan; Kaneko, Taketo; Noda, and Akihiro; Watanabe, Masayoshi

doi:10.1021/ja045155b

Cited by 900 publications

(906 citation statements)

References 44 publications

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“…It should be noted that our PMMA/IL composites are structurally related to the PMMA/[C 2 mim][Tf 2 N] polymer electrolytes reported by Watanabe and coworkers. 52 …”

Section: Resultsmentioning

confidence: 99%

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Lunstroot

Driesen

Nockemann

et al. 2010

Phys. Chem. Chem. Phys.

147

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Flexible luminescent polymer films were obtained by doping europium(III) complexes in blends of poly(methyl methacrylate) (PMMA) and the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [C 6 3 ], where nta is 2-naphthoyltrifluoroacetonate, tta is 2-thenoyltrifluoroacetonate, phen is 1,10-phenanthroline, dpa is 2,6-pyridinedicarboxylate (dipicolinate) and choline is the 2-hydroxyethyltrimethyl ammonium cation. Bright red photoluminescence was observed for all the films upon irradiation with ultraviolet radiation. The luminescent films have been investigated by high-resolution steady-state luminescence spectroscopy and by time-resolved measurements. The polymer films doped with b-diketonate complexes are characterized by a very intense 5 D 0 -7 F 2 transition (up to 15 times more intense than the 5 D 0 -7 F 1 ) transition, whereas a marked feature of the PMMA films doped with [choline] 3 [Eu(dpa) 3 ] is the long lifetime of the 5 D 0 excited state (1.8 ms).

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“…It should be noted that our PMMA/IL composites are structurally related to the PMMA/[C 2 mim][Tf 2 N] polymer electrolytes reported by Watanabe and coworkers. 52 …”

Section: Resultsmentioning

confidence: 99%

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Lunstroot

Driesen

Nockemann

et al. 2010

Phys. Chem. Chem. Phys.

147

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“…Excellent ionic conductivity up to the degradation temperature can open great possibilities regarding the high-temperature PEFC application 19,20 . Among various ILs, imidazolium-based ILs are the most widely studied, and poly(vinylidenefluoride-co-hexafluoropropylene) is a commonly used PEM material.…”

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confidence: 99%

Enhanced proton transport in nanostructured polymer electrolyte/ionic liquid membranes under water-free conditions

2010

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Proton exchange fuel cells (PEFCs) have the potential to provide power for a variety of applications ranging from electronic devices to transportation vehicles. A major challenge towards economically viable PEFCs is finding an electrolyte that is both durable and easily passes protons. In this article, we study novel anhydrous proton-conducting membranes, formed by incorporating ionic liquids into synthetic block co-polymer electrolytes, poly(styrenesulphonate-b-methylbutylene) (s n mB m ), as high-temperature PEFCs. The resulting membranes are transparent, flexible and thermally stable up to 180 °C. The increases in the sulphonation level of s n mB m co-polymers (proton supplier) and the concentration of the ionic liquid (proton mediator) produce an overall increase in conductivity. morphology effects were studied by X-ray scattering and electron microscopy. Compared with membranes having discrete ionic domains (including nafion 117), the nanostructured membranes revealed over an order of magnitude increase in conductivity with the highest conductivity of 0.045 s cm − 1 obtained at 165 °C.

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“…14 Polymer electrolytes of ILs (ion gels) are polymer networks in which ILs are incorporated. In the initial stages of the study, chloroaluminate-based ILs were used, 14,28 but later, non-chloroaluminate-based ILs [29][30][31] were included. Compatibility between ILs and polymers is crucial for the preparation of polymer electrolytes.…”

Section: Polymer Electrolytes Of Ils (Ion Gels)mentioning

confidence: 99%

Design and Materialization of Ionic Liquids Based on an Understanding of Their Fundamental Properties

Watanabe

2016

Electrochemistry

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Ionic liquids (ILs) are defined as salts that have melting points lower than 100°C. Most are organic salts, and these may be designed and tailored to have suitable properties. ILs are recognized as a third group of solvents (and electrolytes), after water and organic solvents. They are characterized by their unique properties such as nonvolatilities, high thermal stabilities, and high ionic conductivities. In this article, our work on the design and preparation of ILs is briefly reviewed. The concept of ionicity is proposed as a metric to characterize the basic nature (dissociativity) of ILs, which is affected by the Lewis acidity/basicity of cations/anions (i.e., coulombic interactions), the directionality of interactions between cations and anions, and van der Waals interactions between ions. The ionicity of ILs is dominated by a subtle balance between coulombic and van der Waals interactions, which clearly discriminates ILs from conventional high-temperature inorganic molten salts. Here, the design of protic ILs for fuel cell electrolytes, electron-transporting ILs for dye-sensitized solar cell electrolytes, and Li + -conducting solvate ILs for lithium battery electrolytes are discussed based on an understanding of the fundamental properties of ILs. Furthermore, the combination of ILs with polymers and colloidal particles affords intriguing quasi-solid materials (ion gels), and the ion transport in these gels is decoupled from the mechanical relaxation time of these materials, yielding new solid electrolytes. The possibility of temperature and photo-sensitive solubility dependence of polymers in ILs allows the creation of stimuli-responsive materials. Finally, protic ILs/protic salts are demonstrated to be good precursors for N-doped carbon materials.

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Ion Gels Prepared by in Situ Radical Polymerization of Vinyl Monomers in an Ionic Liquid and Their Characterization as Polymer Electrolytes

Cited by 900 publications

References 44 publications

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Ionic liquid as plasticizer for europium(iii)-doped luminescent poly(methyl methacrylate) films

Enhanced proton transport in nanostructured polymer electrolyte/ionic liquid membranes under water-free conditions

Design and Materialization of Ionic Liquids Based on an Understanding of Their Fundamental Properties

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