Dicationic stilbazolium salts: Structural, thermal, optical, and ionic conduction properties

Bhowmik, Pradip K.; Koh, Jung Jae; King, David; Han, Haesook; Heinrich, Benoît; Donnio, Bertrand; Zaton, Daniel; Martínez‐Felipe, Alfonso

doi:10.1016/j.molliq.2021.117311

Cited by 7 publications

(4 citation statements)

References 102 publications

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“…The dicationic stilbazolium salts (I-1 -I-4) were prepared by the reaction of trans-4-octyloxy-4-stilbazole with α,ω-methylene ditosylates by S N 2 , followed by metathesis reaction of the corresponding ditosylates salts with lithium triflimide salt to yield the dicationic stilbazolium bistriflimide salts (II-1-II-4), as shown in Figure 1. The detailed synthetic procedures were described elsewhere [24]. Their chemical structures were established by using 1 H, 13 C and 19 F nuclear magnetic resonance (NMR) spectra and elemental analysis [24].…”

Section: Dicationic Stilbazolium Salts and Their Ionic Conductivitiesmentioning

confidence: 99%

“…The detailed synthetic procedures were described elsewhere [24]. Their chemical structures were established by using 1 H, 13 C and 19 F nuclear magnetic resonance (NMR) spectra and elemental analysis [24].…”

Section: Dicationic Stilbazolium Salts and Their Ionic Conductivitiesmentioning

confidence: 99%

“…We hypothesise that the presence of bulky aromatic groups may hinder long-range transport of ionic charges in these compounds. The triflimide salts, alternatively, show DC values that reach the 10 -4.5 S•cm −1 range in the isotropic phase, see Figure 3c), but then fall rapidly following a Vogel-Fulcher-Tammann, VFT, profile [24][25][26].…”

Section: Dicationic Stilbazolium Salts and Their Ionic Conductivitiesmentioning

confidence: 99%

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High Ionic Conductivities of Ionic Materials as Potential Electrolytes

Bhowmik¹,

Chen²,

Han³

et al. 2023

Industrial Applications of Ionic Liquids

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Ionic liquids (ILs) are salts consisting of organic cations and inorganic/organic anions having melting transitions lower than 100°C. They hold promise as engineered materials in a variety of modern fields. They are used as green solvents or catalysts for chemical reactions, biocatalysts, biopolymers processing, active pharmaceutical ingradients in medicine, even as electrolytes for batteries. For batteries applications, ionic liquids must have high ionic conductivity, but most of the ionic liquids (monocationic) have low conductivities. To address this limitation, we describe in this chapter dicationic ionic liquids based on extended viologens. The colossal conductivities, σdc ~ 10−1.5·S cm1 of new diatonic ionic liquids in the same range of benchmark materials/electrolytes applied in fuel cells and batteries is reported. The relatively new class of ionic liquids consist of extended viologen bistriflimides containing oligoethyleneoxy groups were prepared via Zincke reaction under mild conditions and are excellent candidates as components in devices for energy conversion and storage applications. The synthesis and ionic conductivities of other ionic liquids and dicationic organic salts will be contrasted with dicationic ionic liquids in this chapter.

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Section: Dicationic Stilbazolium Salts and Their Ionic Conductivitiesmentioning

confidence: 99%

Section: Dicationic Stilbazolium Salts and Their Ionic Conductivitiesmentioning

confidence: 99%

Section: Dicationic Stilbazolium Salts and Their Ionic Conductivitiesmentioning

confidence: 99%

See 1 more Smart Citation

High Ionic Conductivities of Ionic Materials as Potential Electrolytes

Bhowmik¹,

Chen²,

Han³

et al. 2023

Industrial Applications of Ionic Liquids

View full text Add to dashboard Cite

show abstract

“…In this context, we also note that OICs that can be developed based on dications are expected to be more interesting than those based on monocations, due to the fact that the former possess superior physiochemical properties compared to the later. 16,[27][28][29] Therefore, proper information on the structure and inter-constituent interactions of OICs that are based on dications are expected to be helpful in designing highly efficient solid-state electrolytes for various energyrelated applications.…”

Section: Introductionmentioning

confidence: 99%