Fluorescent cholesterol sensing using enzyme-modified CdSe/ZnS quantum dots

Kim, Ki Eun; Kim, Tae Geun; Sung, Yun Mo

doi:10.1007/s11051-012-1179-8

Cited by 34 publications

(19 citation statements)

References 37 publications

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“…7,8 Its high specicity has been exploited to devise glucose sensors in many studies. 18 The optical properties and the structure of the CdTe/CdS QDs-GOx complex were measured in detail. 14 Compared with conventional dye molecules, QDs have many advantages, such as broad excitation spectra and narrow, tunable, symmetric emission wavelengths.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent glucose sensing using CdTe/CdS quantum dots–glucose oxidase complex

Ding

Zhang

et al. 2016

Anal. Methods

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A novel fluorescent glucose probe, CdTe/CdS quantum dots (QDs)-glucose oxidase (GOx) complex, was synthesized by the chemical conjugation of aqueous CdTe/CdS QDs and GOx. The concentration of glucose is related to the quenching of the fluorescent CdTe/CdS QDs, which is caused by the production of hydrogen peroxide under the catalysis of GOx. Fluorescence spectrophotometry, UV-vis absorption spectroscopy and transmission electron microscopy were used to characterize the CdTe/CdSQDs-GOx complex. The optimum catalytic pH and temperature of the CdTe/CdS QDs-GOx complex were determined to be 7 and 40 C, respectively. A relation between the fluorescence intensity of the CdTe/CdS QDs-GOx complex and the glucose concentrations was found based on a modified Stern-Volmer equation.

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Section: Introductionmentioning

confidence: 99%

Fluorescent glucose sensing using CdTe/CdS quantum dots–glucose oxidase complex

Ding

Zhang

et al. 2016

Anal. Methods

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“…In the recent years, a variety of cholesterol biosensors have been developed [88]. Most of the reported cholesterol biosensors are based on amperometric technique besides, cholesterol biosensors based on photometric behaviors like luminescence, fluorescence and surface plasmon resonance (SPR) have also been reported [88,114,115]. Amperometric measurement of O 2 consumption or H 2 O 2 production during cholesterol catalysis by CHOx is the frequently used strategy in cholesterol assay in the samples [116].…”

Section: Cholesterol Oxidase Biosensors For Different Analytical Assaysmentioning

confidence: 99%

Cholesterol Oxidase: Source,Properties and Applications.

Devi¹,

Kanwar²

2018

Insights Enzyme Res

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“…Besides, cholesterol biosensors based on photometric behaviors namely, luminescence, fluorescence and surface plasmon resonance (SPR) are also reported (Arya et al, 2006;Kim et al, 2012;Marazuela et al, 1997). In enzymatic amperometric biosensors, where enzyme is immobilized on the surface of an electrode, a redox reaction between an enzyme and an analyte leads to a subsequent electron transfer (direct or indirect) between the enzyme and the electrode.…”

Section: Principles and Challenges Of Cholesterol Sensingmentioning

confidence: 99%