Cation-exchange reaction was applied to transform internal chemical input between luminescent CdTe nanorods and metal-bound organic dyes Calcein Blue into fluorescence signal output with amplified response, which provided ultrasensitive and highly selective detection of Cu(II) ions.
Signal amplification via cation exchange reaction: an example in the ratiometric fluorescence probe for ultrasensitive and selective sensing of Cu(II).
Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China.
