Journal of Nanomaterials & Molecular NanotechnologyISSN: 2324-8777

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Research Article, J Nanomater Mol Nanotechnol Vol: 7 Issue: 3

One-pot Chemical Synthesis and Characterization of Fluorescent Cd/Znse Quantum Dots Using L-Cysteine as Stabilizing Agent

Joy Sebastian Prakash Joseph Irudayaraj1, Prakash Thanigainathan2, Murugesan Ramachandran1 and Karunanithi Rajamanickam1*

1Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, Chennai 603 103, Tamil Nadu, India

2National Centre for Nanoscience and Nanotechnology, University of Madras, Guindy Campus, Chennai-600 025, Tamil Nadu, India

*Corresponding Author : Karunanithi Rajamanickam
Faculty of Allied Health Sciences, Chettinad Academy of Research and Education, Kelambakkam, Chennai-603103, Tamil Nadu, India
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+91-44-47429056
E-mail: [email protected]; [email protected]

Received: May 21, 2018 Accepted: July 06, 2018 Published: July 12, 2018

Citation: Irudayaraj JSPJ, Thanigainathan P, Ramachandran M, Rajamanickam K (2018) One-pot Chemical Synthesis and Characterization of Fluorescent Cd/ Znse Quantum Dots Using L-Cysteine as Stabilizing Agent. J Nanomater Mol Nanotechnol 7:3. doi: 10.4172/2324-8777.1000246

Abstract

Cd/ZnSe quantum dots (QDs) were synthesized in a wet chemical method by using a stabilizing agent L-cysteine. This facile synthesis does not require any high temperature or inert gas atmosphere. The synthesized QDs were characterized by using UV-Vis spectrophotometer, spetrofluorometer, fourier transform infrared (FT-IR) spectrometer, Fluorescence lifetime spectrometer, thermogravimetric analysis (TGA), powder x-ray diffraction, transmission electron microscopy and scanning electron microscopy. The synthesized QDs are spherical in shape with an average diameter of 4.78 nm and are readily soluble in water, making them biologically compatible. Further, the carboxyl and amine functional groups are accessible on the QDs’ surface. Thus, these QDs can be used as molecular imaging probes by anchoring targeting molecules by using the functional groups available on the surface of the QDs.

Keywords: Semiconductor nanoparticles; Quantum dots; Wet chemical synthesis; Cadmium selenide; L-cysteine; TEM; TGA

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