Abstract
pH-Dependent conformational changes in bisporphyrincalixarene in which the calix[4]arene core fixes the tetrapyrrole chromophores in the cyclophane orientation relative to each other were studied by spectrophotometric titration and 1H NMR spectroscopy. It was shown that the distance between the reaction centers of the porphyrin fragments of the macrocycle can be controlled by varying the solution acidity. The ranges of reagent concentrations where functionally significant reversible conformational changes of the dimeric porphyrin occur were determined.
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Original Russian Text © Yu.B. Ivanova, R.S. Kumeev, N.Zh. Mamardashvili, 2008, published in Zhurnal Obshchei Khimii, 2008, Vol. 78, No. 3, pp. 500–507.
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Ivanova, Y.B., Kumeev, R.S. & Mamardashvili, N.Z. pH-Dependent conformational changes in bisporphyrincalix[4]arene. Russ J Gen Chem 78, 485–492 (2008). https://doi.org/10.1134/S1070363208030249
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DOI: https://doi.org/10.1134/S1070363208030249