A method for analysis of multicomponent systems of interacting aromatic molecules in solution

J Chem Phys. 2007 Oct 21;127(15):154511. doi: 10.1063/1.2785182.

Abstract

A method has been developed for analyzing multicomponent mixtures containing N different types of noncovalently interacting aromatic molecules using spectroscopic data [nuclear magnetic resonance (NMR), UV-vis, fluorescence, circular dichroism]. The method is based on an algorithmical approach to modeling of the N-component dynamic equilibrium (N-STOCH algorithm), dealing with numbers in N-based numerical systems as analogs of molecular complexes being formed in solution. A basic property of the algorithm is the ability to incorporate any known specificity of molecular interactions without constructing complex mathematical formulas. The utility of the N-STOCH algorithm was demonstrated by using as an example the NMR investigation of the dissociation of a heteroassociation complex of two anticancer drugs on addition of caffeine.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Algorithms
  • Antineoplastic Agents / pharmacology*
  • Caffeine / pharmacology*
  • Circular Dichroism
  • Drug Synergism
  • Magnetic Resonance Spectroscopy
  • Models, Chemical
  • Models, Statistical
  • Models, Theoretical
  • Molecular Structure
  • Solutions / chemistry*
  • Spectrometry, Fluorescence / methods
  • Spectrophotometry
  • Spectrophotometry, Ultraviolet / methods
  • Thermodynamics

Substances

  • Antineoplastic Agents
  • Solutions
  • Caffeine