A highly specific rhodamine-based colorimetric probe for hypochlorites: a new sensing strategy and real application in tap water.

By fully utilizing the oxidation property of hypochlorites and different coordinating properties of Cu(+) and Cu(2+), the Cu(2+) sensor could act as a new good probe toward hypochlorites with high sensitivity as low as 8.1 × 10(-7) M, providing a novel approach to develop new probes for oxidants.