Mediator-free biosensor using chitosan capped CdS quantum dots for detection of total cholesterol

An electrochemical mediator-free biosensor platform have been fabricated using in situ synthesized cadmium sulfide quantum dots embedded in chitosan via surface functionalization of cholesterol esterase and cholesterol oxidase enzyme molecules.

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Development of cholesterol biosensor based on immobilized cholesterol esterase and cholesterol oxidase on oxygen electrode for the determination of total cholesterol in food samples

Bioelectrochemistry ◽

10.1016/j.bioelechem.2006.05.006 ◽

2007 ◽

Vol 70 (2) ◽

pp. 375-379 ◽

Cited By ~ 47

Author(s):

Anjan Kumar Basu ◽

Parimal Chattopadhyay ◽

Utpal Roychoudhuri ◽

Runu Chakraborty

Keyword(s):

Total Cholesterol ◽

Cholesterol Oxidase ◽

Oxygen Electrode ◽

Food Samples ◽

Cholesterol Esterase ◽

Cholesterol Biosensor

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An enzymatic assay for determining free and total cholesterol in tissue.

Clinical Chemistry ◽

10.1093/clinchem/24.3.433 ◽

1978 ◽

Vol 24 (3) ◽

pp. 433-435 ◽

Cited By ~ 105

Author(s):

J L De Hoff ◽

L M Davidson ◽

D Kritchevsky

Keyword(s):

Total Cholesterol ◽

Rat Liver ◽

Ferric Chloride ◽

Cholesterol Oxidase ◽

Enzymatic Assay ◽

Cholesterol Esterase ◽

Enzymatic Method ◽

Liver Lipids

Abstract We describe a method for determining free and total cholesterol in extracts of rat-liver lipids by use of a cholesterol esterase/cholesterol oxidase enzymatic kit (Boehringer Mannheim Corp). The lipids are solubilized (as micelles) directly into the aqueous reagent mixture. Results of the enzymatic method correlate well with those obtained by an acid/ferric chloride assay of digitonin precipitates of the extracts. The enzymatic assay of free and total cholesterol in tissue offers advantages of simplicity over previously used methods.

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Synthesis of Fluorescent CdS Quantum Dots of Tunable Light Emission with a New in Situ Produced Capping Agent

Industrial & Engineering Chemistry Research ◽

10.1021/ie201826e ◽

2012 ◽

Vol 51 (17) ◽

pp. 5995-6000 ◽

Cited By ~ 25

Author(s):

Yan-mei Mo ◽

Yu Tang ◽

Fei Gao ◽

Jun Yang ◽

Yuan-ming Zhang*

Keyword(s):

Quantum Dots ◽

Light Emission ◽

Capping Agent ◽

Cds Quantum Dots

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Luminescent nanocomposites of conducting polymers and in-situ grown CdS quantum dots

10.1063/1.3455549 ◽

2010 ◽

Cited By ~ 2

Author(s):

C. Borriello ◽

S. Masala ◽

V. Bizzarro ◽

G. Nenna ◽

M. Re ◽

...

Keyword(s):

Quantum Dots ◽

Conducting Polymers ◽

Cds Quantum Dots

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In situ growth of CdSe/CdS quantum dots inside and outside of MWCNTs

Current Applied Physics ◽

10.1016/j.cap.2008.12.012 ◽

2009 ◽

Vol 9 (5) ◽

pp. 1112-1116 ◽

Cited By ~ 8

Author(s):

Ling Wang ◽

Minggai Niu ◽

Zhiwei Wu

Keyword(s):

Quantum Dots ◽

In Situ Growth ◽

Cds Quantum Dots

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Cd(ii)–nucleobase supramolecular metallo-hydrogels for in situ growth of color tunable CdS quantum dots

Soft Matter ◽

10.1039/c8sm01122b ◽

2018 ◽

Vol 14 (28) ◽

pp. 5715-5720 ◽

Cited By ~ 4

Author(s):

Bhagwati Sharma ◽

Sonam Mandani ◽

Neha Thakur ◽

Tridib K. Sarma

Keyword(s):

Quantum Dots ◽

In Situ Growth ◽

Cds Quantum Dots ◽

Hydrogel Composite ◽

Color Tunable

A blue, white and yellow emitting CdS–hydrogel composite was formed by interaction of unsubstituted thymine and uracil with Cd2+ ions.

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In situ functionalization of self-assembled dendrimer nanofibers with cadmium sulfide quantum dots through simple ionic-substitution

New Journal of Chemistry ◽

10.1039/c5nj03580e ◽

2016 ◽

Vol 40 (7) ◽

pp. 6325-6331 ◽

Cited By ~ 6

Author(s):

V. Astachov ◽

M. Garzoni ◽

A. Danani ◽

K.-L. Choy ◽

G. M. Pavan ◽

...

Keyword(s):

Quantum Dots ◽

Cadmium Sulfide ◽

Simple Approach ◽

Ionic Substitution ◽

Cds Qds ◽

Self Assembled ◽

Poly Propylene ◽

In Situ Functionalization

Cadmium sulfide quantum dots (CdS-QDs) can be generated along poly(propylene imine) (PPI) dendrimer-based self-assembled nanofibers through a simple approach based on ionic substitution.

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Interface formation during silica encapsulation of colloidal CdSe/CdS quantum dots observed by in situ Raman spectroscopy

The Journal of Chemical Physics ◽

10.1063/1.4979515 ◽

2017 ◽

Vol 146 (13) ◽

pp. 134708 ◽

Cited By ~ 9

Author(s):

Amelie Biermann ◽

Tangi Aubert ◽

Philipp Baumeister ◽

Emile Drijvers ◽

Zeger Hens ◽

...

Keyword(s):

Quantum Dots ◽

Raman Spectroscopy ◽

Cds Quantum Dots ◽

Interface Formation ◽

In Situ Raman Spectroscopy ◽

In Situ Raman ◽

Silica Encapsulation

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Photodynamic Effects in Nanocomposites Based on Quantum Dots of Cadmium Sulfide Embedded in a Silicate Matrix, in their Interaction with the Laser Beam

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.213.186 ◽

2014 ◽

Vol 213 ◽

pp. 186-191 ◽

Cited By ~ 1

Author(s):

Alexander A. Sergeev ◽

Sergey S. Voznesenskiy ◽

Anna N. Galkina ◽

Aleksandr Nepomnyaschiy ◽

Kseniya M. Sergeeva

Keyword(s):

Quantum Dots ◽

Refractive Index ◽

Optical Properties ◽

Laser Radiation ◽

Laser Beam ◽

Cadmium Sulfide ◽

Local Change ◽

Silicate Matrix ◽

Cds Quantum Dots ◽

Exposure Conditions

In this paper we study the possibility of modifying the optical properties of nanocomposites based on CdS quantum dots embedded in a silicate matrix, in their interaction with the laser radiation. It was found that the action of laser radiation leads to local change in the refractive index of the nanocomposite, the dynamics of which depends on the exposure conditions.

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