Thermodynamic and kinetic analysis of metal ion complexation by photochromic spiropyrans |
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Authors: | M I Zakharova V Pimienta A V Metelitsa V I Minkin J C Micheaua |
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Institution: | (1) Faculty of Chemical Engineering and Environmental Protection, “Gh. Asachi” Technical University of Iasi, 73, Prof. dr. docent Dimitrie Mangeron Rd, 700050 Iasi, Romania;(2) “P. Poni” Institute of Macromolecular Chemistry, 41A Aleea Grigore Ghica Voda, 700487 Iasi, Romania |
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Abstract: | This review focuses on the results of the studies of metal ion complexation by spiropyrans published mostly in recent years.
Introduction of ionophore substituents in the molecules of photochromic spiropyrans induces a reasonably strong bonding in
the complexes of these compounds with metal ions. The degree of complexation depends on the state (open or closed) of the
photochromic spiropyran fragment. Directed synthesis of structures able to form complexes with metal ion requires knowledge
of structure-property relationships based, among other, on the studies of the compounds synthesized earlier. This requires
accurate determination of thermodynamic and kinetic parameters of complex formation. Difficulties of such quantitative analysis
due to the presence of several interrelated equilibria in the system are discussed. |
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