First use of p-tert-butylcalix[4]arene-tetra-O-acetate as a nanoreactor having tunable selectivity towards cross azo-compounds by trapping silver ions

<italic>p-tert</italic>-Butylcalix[4]arene-tetra-<italic>O</italic>-acetate was established for the first time as a member of the nanoreactor series, even wi...