Makale detayı · 2008
Electrochemical photoelectrochemical and piezoelectric analysis of tyrosinase activity by functionalized nanoparticles
Dergi
Analytical Chemistry 80 (2008) 2811-2816.ISSN 0003-2700
ISSN kaydı başka bir dergiye işaret ediyor; ad YÖKSİS kaydından.
- Yıl
- 2008
- Tür
- article
Veri kaynağı ayrımı
- YÖKSİS YÖKSİS makale kaydı
- YÖKSİS dergi adı Analytical Chemistry 80 (2008) 2811-2816.
- Katalog eşleşmesi (ISSN) Analytical Chemistry
- OpenAlex OpenAlex zenginleştirmesi (özet, atıf, konular)
Özet
OpenAlex · İngilizce
The electrochemical and photoelectrochemical detection of tyrosinase (TR) activity (an indicative marker for melanoma cancer cells) is reported, using Pt nanoparticles (NPs) or CdS NPs as electrocatalytic labels or photoelectrochemical reporter units. The Pt NPs or CdS NPs are modified with a tyrosine methyl ester, (1), capping layer. Oxidation of the capping layer by TR/O2 yields the respective L-DOPA and dopaquinone products. The reduction of the resulting mixture of products with citric acid yields the L-DOPA derivative,(3), as a single product. The association of the (3)-functionalized Pt NPs or CdS NPs to a boronic acid monolayer-modified electrode enables the electrochemical transduction of TR activity by the Pt-NPs-electrocatalyzed reduction of H2O2 or the photoelectrochemical transduction of TR activity by the generation of photocurrents in the presence of triethanolamine as a sacrificial electron donor. The detection limits for analyzing TR corresponds to 1 U and 0.1 U by the electrochemical and photoelectrochemical methods, respectively. The association of the Pt NPs or CdS NPs to the functionalized monolayer electrode is followed by quartz crystal microbalance measurements.
Konular
Atıflar
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169 atıf
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