Signal amplification via cation exchange reaction: an example in the ratiometric fluorescence probe for ultrasensitive and selective sensing of Cu(II).
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.
Liu
Meng
M
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.
Zhao
Huimin
H
Quan
Xie
X
Chen
Shuo
S
Yu
Hongtao
H
D015374:Biosensing Techniques; D019187:Cadmium Compounds / Q000737:chemistry; D002412:Cations / Q000737:chemistry*; D003300:Copper / Q000032:analysis*; D005452:Fluoresceins / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry; D011094:Polyethyleneimine / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013691:Tellurium / Q000737:chemistry; D013864:Thioglycolates / Q000737:chemistry
D019187:Cadmium Compounds; D002412:Cations; D005452:Fluoresceins; D005456:Fluorescent Dyes; D013864:Thioglycolates; D003300:Copper; D011094:Polyethyleneimine; D013691:Tellurium; C028337:cadmium telluride; C007740:fluorexon