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Updated: Jan 27, 2026

Nanosponge Tunability in Size and Crosslinking Density
Published on: August 4, 2017
Polyaminoazide mixtures for the synthesis of pH-responsive calixarene nanosponges
Antonella Di Vincenzo1, Antonio Palumbo Piccionello1, Alberto Spinella2
1Dipartimento di Sicenze e Tecnologie Biologiche, Chimiche e Farmaceutiche (STEBICEF), University of Palermo - V.le delle Scienze, Ed. 17, 90128 Palermo, Italy.
Abstract:
Two mixtures of polyaminoazides were synthesized by a nucleophilic displacement strategy providing no separation of the components. The mixtures were adequately characterized by means of combined HR-ESIMS, FTIR and NMR techniques and, despite their complexity, they were successfully used to accomplish the subsequent preparation of pH-sensitive calixarene hyper-reticulated nanosponge materials. The desired responsivity to pH variations of the nanosponges obtained was verified by means of absorption tests on a set of organic pollutant model molecules.
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