The self-assembly of internally ion-paired, neutral AA/BB-type supramolecular polymers composed of complementary di-ionizable homoditopic pairs of monomers is reported. Host-to-guest double-proton transfer mediates the recognition between bis-calix[5]arenedicarboxylic acids and a,w-diaminoalkanes to yield cyclic, doughnut-shaped assemblies with morphologies (i.e., cyclic vs. linear) that can be controlled by means of external chemical stimuli. The behavior of these intriguing aggregates, both in solution and on surfaces, has been investigated by a combination of 1H and DOSY NMR spectroscopy, light-scattering, and atomic force microscopy.

Ring/Chain Morphology Control in Overall-Neutral, Internally Ion-Paired Supramolecular Polymers

Nadia Manganaro
Primo
;
Ilenia Pisagatti
Secondo
;
Anna Notti;Salvatore Patanè;Melchiorre Parisi
Penultimo
;
Giuseppe Gattuso
Ultimo
2018

Abstract

The self-assembly of internally ion-paired, neutral AA/BB-type supramolecular polymers composed of complementary di-ionizable homoditopic pairs of monomers is reported. Host-to-guest double-proton transfer mediates the recognition between bis-calix[5]arenedicarboxylic acids and a,w-diaminoalkanes to yield cyclic, doughnut-shaped assemblies with morphologies (i.e., cyclic vs. linear) that can be controlled by means of external chemical stimuli. The behavior of these intriguing aggregates, both in solution and on surfaces, has been investigated by a combination of 1H and DOSY NMR spectroscopy, light-scattering, and atomic force microscopy.
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Descrizione: Ring/Chain Morphology Control in Overall-Neutral, Internally Ion-Paired Supramolecular Polymers
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11570/3119544
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