Abstract
A singular value decomposition (SVD)-based chemometric method is used for deconvolution of spectral information obtained from a single sample containing an equilibrium system with spectral overlapping at different temperatures. The output of analysis is the association constants at each temperature, thermodynamic parameters and the component spectral profiles. Thermodynamic characterization of charge–transfer complex formation between chloranil and some aromatic hydrocarbons are used as a model system for weak association equilibria and strong component spectral overlapping. The approach can be successfully applied for studying equilibrium systems, which cannot be treated with classical methods like Benesi–Hildebrand method due to the presence of systematic errors.
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