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2007 | 5 | 2 | 546-556
Tytuł artykułu

Synthesis and proton conductivity of anhydrous dendritic electrolytes

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Water soluble PEG cored dendritic hexa-acid which comprises peripheral carboxylic acidic groups were prepared via nucleophilic substitution reactions. Novel anhydrous proton conducting electrolytes were prepared by incorporation of the heterocyclic protogenic solvent imidazole (Im) into PEG cored dendritic hexa acid, (PEG-HA), at several molar ratios of Im to-COOH units of PEG-HA. The complexation of PEG-HA and Im was illustrated by infrared spectroscopy (FT-IR). The materials are thermally stable up to 150 °C as evidenced by thermogravimetry analysis (TGA). Differential scanning calorimetry (DSC) results verified that the organic electrolytes are homogeneous and amorphous. The proton conductivities were characterized by means of AC impedance spectroscopy and a maximum conductivity of 1 × 10−3 S/cm was measured at 120 °C in the anhydrous state. [...]
Wydawca

Czasopismo
Rocznik
Tom
5
Numer
2
Strony
546-556
Opis fizyczny
Daty
wydano
2007-06-01
online
2007-02-27
Twórcy
  • Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey
autor
  • Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey, metin@fatih.edu.tr
  • Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey, bozkurt@fatih.edu.tr
Bibliografia
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  • [12] G.R. Newkome, R.K. Behera, C.N. Moorefield and G.R. Baker: “Cascade polymers: Synthesis and characterisation of four-directional spherical dendritic macromolecules based on adamantane”, J. Org. Chem., Vol. 57, (1992), pp. 358–362. http://dx.doi.org/10.1021/jo00027a061[Crossref]
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  • [17] A. Bozkurt and T. Pakula: “Dielectric and dynamic mechanical relaxations in polymer-heterocycle hybrid materials”, Chem. Phys. Lett., Vol. 422, (2006) pp. 496–499. http://dx.doi.org/10.1016/j.cplett.2006.02.078[Crossref]
  • [18] W. Münch, K.D. Kreuer, W. Silvestri, J. Maier and G. Seifert: “The diffusion mechanism of an excess proton in imidazole molecule chains: first results of an ab initio molecular dynamics study” Solid State Ionics, Vol. 145, (2001), pp. 437–443. http://dx.doi.org/10.1016/S0167-2738(01)00941-9[Crossref]
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  • [21] A. Bozkurt and T. Pakula: “Dielectric and dynamic mechanical relaxations in polymer-heterocycle hybrid materials”, Chem. Phys. Lett., Vol. 422, (2006), pp. 496–499. http://dx.doi.org/10.1016/j.cplett.2006.02.078[Crossref]
  • [22] M. Yamada and I. Honma: “Proton conducting acid-base mixed materials under water-free condition”, Electrochim. Acta, Vol. 48, (2003), pp. 2411–2415. http://dx.doi.org/10.1016/S0013-4686(03)00263-9[Crossref]
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-007-0016-x
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