[摘要]：A coumarin-based colorimetric chemosensor was designed and synthesized. It exhibits good sensitivity and selectivity for the copper cation over other cations such as Zn2+, Cd2+, Pb2+, Co2+, Fe2+, Ni2+, Ag+, and alkali and alk. earth metal cations both in aq. soln. and on paper-made test kits. The change in color is very easily obsd. by the naked eye in the presence of Cu2+ cation, whereas other metal cations do not induce such a change. The quant. detection of Cu2+ was preliminarily examd.
