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Colorimetric detection of potassium ions using aptamer-functionalized gold nanoparticles

✍ Scribed by Chen, Zhengbo; Huang, Yanqin; Li, Xiaoxiao; Zhou, Tong; Ma, He; Qiang, Hong; Liu, Yifei

Book ID
120526774
Publisher
Elsevier Science
Year
2013
Tongue
English
Weight
790 KB
Volume
787
Category
Article
ISSN
0003-2670

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## Abstract **Seeing is sensing**: Calsequestrin (CSQ) functionalized gold nanoparticles undergo calcium‐dependent CSQ polymerization, which results in a clear color change (see picture) together with precipitation. The sensing system is specific for Ca^2+^ ions and the differences between normal a