WebMay 22, 2024 · Abstract. A simple, rapid, and specific colorimetric method for gentamicin detection using cysteamine-modified gold nanoparticles (cys-AuNPs) has been … Gold nanoparticles (AuNPs) have received substantial attention due to their unique and tuneable optoelectronic properties that mainly arises from surface plasmon resonance (SPR). Briefly, AuNPs exhibiting SPR change their appearance colour from ruby red to bluish grey, depending on their overall … See more The authors wish to gratefully acknowledge the financial support received from Fundamental Research Grant Scheme … See more By manipulating the electrostatic interaction among DNA aptamer, target and cysAuNPs, we have rationally designed an aptasensor for lysozyme detection. While the … See more
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WebJul 26, 2013 · The common drawbacks of current colorimetric sensors using gold nanoparticle aggregation is its relatively low sensitivity and narrow dynamic range, which restrict their application in real sample analysis when competing with other analytical techniques such as fluorescence and chemiluminescence. In this article, we demonstrate … WebJul 10, 2024 · Lead ion (Pb2+) accumulation in food consumed by humans and animals possess health threats and effects. The development of a senor for its monitoring at its minutest accumulation in edible materials becomes an antidote to safeguarding human lives. A fabricated fluorescence-based sensor made of carboxyl modified upconversion … kids fall party games
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WebDec 15, 2024 · With gold nanoparticles, the biosensor displays a higher sensitivity and wide linear range, as showed in Figure 1C, ... Gold SPE 2 and cysteamine SAM 3: 5% (n = 4) 2 ppb (* 1) Up to 40 ppb: 97 ± 5% : Electrochemical (voltammetric) Enzyme (butyrylcholinesterase) SPE 2 with carbon black nanoparticles: WebJan 26, 2009 · Gold nanoparticles can induce the formation of protein-based aggregates at physiological pH Nano letters January 26, 2009 Other authors. See publication. … WebSep 1, 2024 · Cysteamine-coated gold nanoparticles for bimodal colorimetric detection with inverse sensitivity: a proof-of-concept with lysozyme Jing Luen Wai, S. Y. New Chemistry RSC advances 2024 Cysteamine-coated gold nanoparticles (cysAuNPs) are positively charged as-synthesised and hence can interact with negatively charged DNA … kids facts about fossils