Abstract:A 4-nitro-L-phenylalanine scaffold was used to construct effective ion pair receptors capable of binding anions in an enhanced manner with the assistance of alkali metal cations. A benzocrown ether was linked to a receptor platform via the amide function so as to support the squaramide function in anion binding and to allow all three NHs to act simultaneously. The binding properties of the receptors were determined using UV-vis, 1H NMR, 2D NMR, and DOSY spectroscopy in MeCN and in the solid state by X-ray meas… Show more
“…19) that have been successfully used as extractants. [52][53][54][55][56][57][58][59][60] As shown in Fig. 19, all the receptors developed in Roman ´ski's lab are characterised by the presence of at least one squaramide unit and one crown-ether unit, which are responsible for the binding of anions and cations, respectively.…”
“…19) that have been successfully used as extractants. [52][53][54][55][56][57][58][59][60] As shown in Fig. 19, all the receptors developed in Roman ´ski's lab are characterised by the presence of at least one squaramide unit and one crown-ether unit, which are responsible for the binding of anions and cations, respectively.…”
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