Size dependence of molecular self-assembling in stacked aggregates. 1. NMR investigation of ciprofloxacin self-association.
Identifieur interne : 001D80 ( PubMed/Curation ); précédent : 001D79; suivant : 001D81Size dependence of molecular self-assembling in stacked aggregates. 1. NMR investigation of ciprofloxacin self-association.
Auteurs : Ioan Turcu [Roumanie] ; Mircea BogdanSource :
- The journal of physical chemistry. B [ 1520-5207 ] ; 2012.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemical synthesis : Macromolecular Substances.
- chemical , chemistry : Ciprofloxacin, Macromolecular Substances.
- Magnetic Resonance Spectroscopy, Molecular Structure, Particle Size, Thermodynamics.
Abstract
One of the most important purposes in molecular technologies is the preparation of supramolecular structures by self-assembling processes. The aromatic molecules self-associate mainly in π-π stacked structures with an aggregate size distribution determined by the association equilibrium constants. A general expression for the equilibrium constants K(n,m) which govern the self-association of two aggregates with n and m monomers respectively has been obtained. The model predicts also the concentrations of free monomers, the concentrations of n-mers, and the total concentration of aggregates. (1)H NMR experiments have been used to illustrate the applicability of the proposed model in a particular case: π-stacking self-association of ciprofloxacin in solution.
DOI: 10.1021/jp3034215
PubMed: 22574778
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