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Colorimetric detection of Fe3+ ions using pyrophosphate functionalized gold nanoparticles

✍ Scribed by Wu, Shu-Pao; Chen, Yi-Pu; Sung, Yi-Ming

Book ID
111944609
Publisher
Royal Society of Chemistry
Year
2011
Tongue
English
Weight
362 KB
Volume
136
Category
Article
ISSN
0003-2654

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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