utilized for the detection of copper ions in the aqueous medium. The photophysical potential
of compound (5) is examined by a range of cations (Ba2+, Ca2+, Co2+, Hg2+, K+, Mg2+,
Mn2+, Na+, NH4+ and Pd2+). The triazole based calix [4] resorcinarene macrocycle (5) has
interacted with Cu2+ ion in preference of other cations. A significant quenching has been
observed after the addition of 15 μM Cu2+ ion solution, which produced 4.2 folds drift in the …