Water-Mediated Ion Pairing: Occurrence and Relevance

Forskningsoutput: TidskriftsbidragÖversiktsartikel

Abstract

We present an overview of the studies of ion pairing in aqueous media of the past decade. In these studies, interactions between ions, and between ions and water, are investigated with relatively novel approaches, including dielectric relaxation spectroscopy, far-infrared (terahertz) absorption spectroscopy, femtosecond mid-infrared spectroscopy, and X-ray spectroscopy and scattering, as well as molecular dynamics simulation methods. With these methods, it is found that ion pairing is not a rare phenomenon only occurring for very particular, strongly interacting cations and anions. Instead, for many salt solutions and their interfaces, the measured and calculated structure and dynamics reveal the presence of a distinct concentration of contact ion pairs (CIPs), solvent shared ion pairs (SIPs), and solvent-separated ion pairs (2SIPs). We discuss the importance of specific ion-pairing interactions between cations like Li+ and Na+ and anionic carboxylate and phosphate groups for the structure and functioning of large (bio)molecular systems.

Detaljer

Författare
  • Nico F A Van Der Vegt
  • Kristoffer Haldrup
  • Sylvie Roke
  • Junrong Zheng
  • Mikael Lund
  • Huib J. Bakker
Enheter & grupper
Externa organisationer
  • Technical University of Darmstadt
  • Technical University of Denmark
  • Swiss Federal Institute of Technology
  • Peking University
  • FOM Institute for Atomic and Molecular Physics
  • Rice University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Fysikalisk kemi
Originalspråkengelska
Sidor (från-till)7626-7641
Antal sidor16
TidskriftChemical Reviews
Volym116
Utgåva nummer13
StatusPublished - 2016 jul 13
PublikationskategoriForskning
Peer review utfördJa