dc.contributor.author | Mulder, Danielle Wingrove | |
dc.contributor.author | Phiri, Masauso Moses | |
dc.contributor.author | Vorster, Barend Christiaan | |
dc.date.accessioned | 2019-09-09T08:32:08Z | |
dc.date.available | 2019-09-09T08:32:08Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Mulder, D.W. et al. 2019. Tailor-made gold nanostar colorimetric detection determined by morphology change and used as an indirect approach by using hydrogen peroxide to determine glucose concentration. Sensing and bio-sensing, 25: Article no 100296. [https://doi.org/10.1016/j.sbsr.2019.100296] | en_US |
dc.identifier.issn | 2214-1804 (Online) | |
dc.identifier.uri | http://hdl.handle.net/10394/33291 | |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S2214180419300558 | |
dc.identifier.uri | https://doi.org/10.1016/j.sbsr.2019.100296 | |
dc.description.abstract | Gold nanostars are being utilized more regularly in the field of nanodiagnostics. The modified seedless synthetic
method comprised of 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) synthesized with the addition
of silver nitrate was applied for a biosensor application. The colorimetric ability of these newly synthesized
nanostars showed to be more sensitive and more visually colorful than the HEPES gold nanostars synthesized
without silver nitrate. It was observed that the gold nanostar colorimetric assay could be tailored for a specific
application using either hydroxylamine or sodium hydroxide as colorimetric catalysts. Upon the attachment of
glucose oxidase to the gold nanostars, glucose was measured by its oxidation and the generated hydrogen
peroxide resulted in a sufficient color gradient that clearly distinguished different concentrations. Added to the
color changes was the spectrophotometric localized surface plasmon resonance peak shifts in response to different glucose concentrations. In conclusion, the reported nanostars showed great potential as a good biosensing
candidate | en_US |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.subject | Biosensor | en_US |
dc.subject | Gold nanostars | en_US |
dc.subject | HEPES | en_US |
dc.subject | Hydroxylamine hydrochloride | en_US |
dc.subject | Hydrogen peroxide | en_US |
dc.subject | Sodium hydroxide | en_US |
dc.title | Tailor-made gold nanostar colorimetric detection determined by morphology change and used as an indirect approach by using hydrogen peroxide to determine glucose concentration | en_US |
dc.type | Article | en_US |
dc.contributor.researchID | 26718944 - Mulder, Danielle Wingrove | |
dc.contributor.researchID | 25264834 - Phiri, Masauso Moses | |
dc.contributor.researchID | 22713077 - Vorster, Barend Christiaan | |