Jump to main content
Jump to site search


Energetics and the molecular structure of an ion-paired supramolecular system in water

Author affiliations

Abstract

The forces that bind the components of a host–guest complex to generate a stable supramolecular system are noncovalent interactions. The enthalpy of this association, ΔasH°, usually measured using calorimetry, quantifies the magnitude of such interactions and is directly related to the stability of the supramolecular complex formed. Using Calvet calorimetry to determine the enthalpies of solution and reaction in water, the enthalpy of association was derived for a supramolecular system formed by the anionic macrocycle anti-disulfodibenzo[24]crown-8 ([DSDB24C8]2−) and the dicationic guest paraquat [PQT]2+. The calorimetric results show an exothermic association process, which indicates the generation of strong interactions between the components of the ion pair. This is consistent with the formation of a stable supramolecular complex [PQT][DSDB24C8], whose spatial arrangement in aqueous solution is proposed based on spectroscopic analysis.

Graphical abstract: Energetics and the molecular structure of an ion-paired supramolecular system in water

Back to tab navigation

Supplementary files

Publication details

The article was received on 05 May 2017, accepted on 29 Jun 2017 and first published on 29 Jun 2017


Article type: Paper
DOI: 10.1039/C7CP02955A
Citation: Phys. Chem. Chem. Phys., 2017, Advance Article
  •   Request permissions

    Energetics and the molecular structure of an ion-paired supramolecular system in water

    O. Cruz-Vásquez, L. J. Bernal-Sánchez, R. Cervantes, J. Tiburcio and A. Rojas, Phys. Chem. Chem. Phys., 2017, Advance Article , DOI: 10.1039/C7CP02955A

Search articles by author

Spotlight

Advertisements