Sensitive Determination for Papain Conjugated CdSe Quantum Dots by Dynamic Light Scattering Analysis

Arup Ratan Mandal; Artur Ishteev; Sergey Volchematiev; Denis V. Kuznetsov

doi:10.4028/www.scientific.net/AMR.1119.19

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1119Sensitive Determination for Papain Conjugated CdSe...

Sensitive Determination for Papain Conjugated CdSe Quantum Dots by Dynamic Light Scattering Analysis

Abstract:

A strong, simple and rapid method for determination enzyme (papain) conjugated quantum dots (QDs) by dynamic light scattering (DLS) is proposed in this report. Yellow CdSe QDs are synthesized with changing the precursor ratio and confirmed by absorption and emission spectra. Shape and size of synthesized QDs are checked by transmission electron microscope (TEM). Both absorption and emission spectra reveal very strong quantum confinement effect as expected; yellow excitonic emission is observed at room temperature for photoluminescence spectra (PL). The peak maxima are appreciably red-shifted when QDs are conjugated with positively charged papain enzyme. The details possible mechanism is described here, which is very interesting and scarcely addressed before.

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Periodical:

Advanced Materials Research (Volume 1119)

Pages:

19-23

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1119.19

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Online since:

July 2015

Authors:

Arup Ratan Mandal*, Artur Ishteev, Sergey Volchematiev, Denis V. Kuznetsov

Keywords:

Absorption, Dynamic Light Scattering, Photoluminescence (PL), Yellow-Quantum Dots

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