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Updated: Feb 19, 2026

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
Ring/Chain Morphology Control in Overall-Neutral, Internally Ion-Paired Supramolecular Polymers
Nadia Manganaro1, Ilenia Pisagatti1, Anna Notti1
1Dipartimento di Scienze Chimiche Biologiche, Farmaceutiche ed Ambientali, Università di Messina, Viale F. Stagno d'Alcontres 31, 98166, Messina, Italy.
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 α,ω-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 1 H and DOSY NMR spectroscopy, light-scattering, and atomic force microscopy.
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