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Revisiting the Spectral Displacement Method for Estimation of the Binding Constants in Systems Involving Multiple Equilibria

Year: 2025

Type: article

Abstract: The old spectral displacement method can be suitably revitalized for a didactic experimental approach to fundamental concepts of supramolecular chemistry and to the study of complex equilibria in general. In particular, the case of the β-cyclodextrin/phenolphthalein/adamantane ternary system has been taken into account as a viable and impressive example due to the remarkable color changes that can be observed when performing the experiments. A new method for data regression analysis is proposed, with a smart trick able to overcome the mathematical difficulties arising whenever multiple equilibria must be considered. Hence, some aspects of the reliability of fitting procedures are discussed.

Source: Sustainable Chemistry

DOI: 10.3390/suschem6040049

Authors: Marco Russo, Antonella Di Vincenzo, Michele Antonio Floriano, Paolo Lo Meo

Institutions: Institute of Nanostructured Materials, National Research Council, University of Palermo

Language: English

Topic: Supramolecular Chemistry and Complexes

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,207

OpenAlex ID: W4416999005

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Cites: 36

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