Calix[4]pyrroles with bulky substituents and their anion binding studies

Authors : Ahmet AKAR, Abdullah AYDOGAN

Pages : 493-501

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Calix[4]pyrrole derivatives with bulky substituents at their meso-positions were synthesized via mixed condensation of pyrrole with cyclohexanone and acetophenone derivatives. Anion binding studies, carried out by isothermal titration calorimetry in 1,2-dichloroethane with Cl$^{-}$ and CH$_{3}$CO$_{2}^{-}$ anions in the form of their tetrabutylammonium salts, revealed that these new calix[4]pyrrole derivatives can bind the aforementioned anions as effectively as the unsubstituted ``parent`` system, octamethylcalix[4]pyrrole insert ignore into journalissuearticles values(1);. Structural characterizations of new calix[4]pyrroles were carried out by using $^{1}$H and $^{13}$C NMR spectroscopy corroborated with mass spectrometry.
Keywords : Calix 4 pyrrole, anions sensors, anion binding