Polyaminoazide mixtures for the synthesis of pH-responsive calixarene nanosponges

Polyaminoazide mixtures for the synthesis of pH-responsive calixarene nanosponges

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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, Pin and Rack Service Kit 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 Bike Units - Cruiser nanosponges obtained was verified by means of absorption tests on a set of organic pollutant model molecules.