Journal
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
Volume 30, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.pdpdt.2020.101699
Keywords
Gold nanoparticles; Functionalization; Cancer detection; Color change; Colorimetric sensor; Biosensor
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The chances of curing and reducing the adverse effect of cancer partly lie in early detection. Colorimetric sensor-based technique show promising results since the target is detected with high sensitivity but without the use of advanced/costly techniques through a simple visual color change. In most cases, gold nanoparticles (Au Nps) functionalized with biomolecules complementary to target analyze are used for colorimetric detection. The interaction of functionalized Au Nps with target analyzes induce aggregation or dispersion where the color of the solution changes from red to blue or blue to red respectively, which can be visualized by the naked eyes. Such a facile technique has a high commercial viability and therefore, understanding its concept is essential. Here, some of the reported studies are discussed technically for better understanding about the invitro colorimetric detection of cancer.
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