SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Khalid Mohammad)
 

Sökning: WFRF:(Khalid Mohammad) > Protic Ionic Liquid...

  • Abdurrokhman, Iqbaal,1991Chalmers tekniska högskola,Chalmers University of Technology (författare)

Protic Ionic Liquids Based on the Alkyl-Imidazolium Cation: Effect of the Alkyl Chain Length on Structure and Dynamics

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • 2019-04-17
  • American Chemical Society (ACS),2019

Nummerbeteckningar

  • LIBRIS-ID:oai:research.chalmers.se:23365441-e2f6-4283-9da1-24573690acf2
  • https://doi.org/10.1021/acs.jpcb.9b01274DOI
  • https://research.chalmers.se/publication/510444URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:art swepub-publicationtype
  • Ämneskategori:ref swepub-contenttype

Anmärkningar

  • Protic ionic liquids are known to form extended hydrogen-bonded networks that can lead to properties different from those encountered in the aprotic analogous liquids, in particular with respect to the structure and transport behavior. In this context, the present paper focuses on a wide series of 1-alkyl-imidazolium bis(trifluoromethylsulfonyl)imide ionic liquids, [HC n Im][TFSI], with the alkyl chain length (n) on the imidazolium cation varying from ethyl (n = 2) to dodecyl (n = 12). A combination of several methods, such as vibrational spectroscopy, wide-angle X-ray scattering (WAXS), broadband dielectric spectroscopy, and 1 H NMR spectroscopy, is used to understand the correlation between local cation-anion coordination, nature of nanosegregation, and transport properties. The results indicate the propensity of the -NH site on the cation to form stronger H-bonds with the anion as the alkyl chain length increases. In addition, the position and width of the scattering peak q 1 (or the pre-peak), resolved by WAXS and due to the nanosegregation of the polar from the nonpolar domains, are clearly dependent on the alkyl chain length. However, we find no evidence from pulsed-field gradient NMR of a proton motion decoupled from molecular diffusion, hypothesized to be facilitated by the longer N-H bonds localized in the segregated ionic domains. Finally, for all protic ionic liquids investigated, the ionic conductivity displays a Vogel-Fulcher-Tammann dependence on inverse temperature, with an activation energy E a that also depends on the alkyl chain length, although not strictly linearly.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Elamin, Khalid,1977Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)elamin (författare)
  • Danyliv, Olesia,1989Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)olesia (författare)
  • Hasani, MohammadChalmers tekniska högskola,Chalmers University of Technology (författare)
  • Swenson, Jan,1966Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)f5xjs (författare)
  • Martinelli, Anna,1978Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)annamart (författare)
  • Chalmers tekniska högskola (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Journal of Physical Chemistry B: American Chemical Society (ACS)123:18, s. 4044-40541520-52071520-6106

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Sök utanför SwePub

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy