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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/038/05/1247-1252

    • Keywords

       

      Capping agents; quantum confinement; poly-dispersed; luminescent.

    • Abstract

       

      Cadmium selenide quantum dots (CdSe QDs) were synthesized in aqueous phase by the freezing temperature injection technique using different capping agents (viz. thioglycolic acid, 1-thioglycerol, L-cysteine). Absorption spectra of CdSe QDs exhibited a blue shift as compared to its bulk counterpart, which is an indication of quantum confinement effect. The photoluminescence spectra of CdSe QDs confirmed that the particles are poly-dispersed and possess enhanced luminescent property, depending upon the chemical nature of capping agents. The QDs have been characterized by Fourier-transform infrared spectroscopy, atomic absorption spectroscopy and transmission electron microscopy. Further, antimicrobial activity of as-prepared QDs has also been investigated using the disk diffusion method.

    • Author Affiliations

       

      Deepika1 Rakesh Dhar1 Suman Singh2 Atul Kumar1

      1. Department of Applied Physics, Guru Jambheshwar University of Science and Technology, Hisar 125 001, India
      2. Central Scientific Instruments Organization (CSIR–CSIO), Chandigarh 160 030, India

    • Dates

       
      Published
      September 2015
      Manuscript received
      12 August 2014
      Accepted
      16 April 2015

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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