Beilstein J. Org. Chem.2019,15, 633–641, doi:10.3762/bjoc.15.59
of Palermo – V.le delle Scienze, Ed. 18, 90128 Palermo, Italy Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), CNR Palermo – Via Ugo La Malfa 153, 90146 Palermo, Italy 10.3762/bjoc.15.59 Abstract Two mixtures of polyaminoazides were synthesized by a nucleophilic displacement strategy
. 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.
Keywords: calixarenes; nanosponges; pH-responsive materials; pollutants; polyaminoazides; Introduction
The ability to provide a response to
I (red) and mixture II (blue).
FTIR spectra (nujol) of Ca (red), CaNS-I (blue) and CaNS-II (green).
CP-MAS NMR spectra of CaNSs.
Structures of guests 6–15.
Synthesis of the propargyloxy calixarene Ca.
Synthesis of polyaminoazides from polyamines.
Reaction of 1,3-dibromopropane (4) with sodium azide
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Graphical Abstract
Scheme 1:
Synthesis of the propargyloxy calixarene Ca.