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Updated: Jan 5, 2026

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White Emitting Magic Sized CdSe Nanoclusters Using Edible Oils: A Green Approach.

Pawan K Khanna1, Aditi Jadhav1, Priyesh V More1

  • 1Nano Chemistry/QDs R&D Laboratory, Department of Applied Chemistry, Defence Institute of Advanced Technology (DIAT), Ministry of Defence, Defence Research and Development Organisation, Government of India, Girinagar, Pune 411025, India.

Journal of Nanoscience and Nanotechnology
|October 23, 2019
PubMed
Summary

Green synthesis of Cadmium Selenide (CdSe) magic-sized nanoclusters (MSNCs) utilized edible oils as capping agents. One specific oil yielded stable, bright white light-emitting CdSe MSNCs for over a year.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Green Chemistry

Background:

  • Magic-sized nanoclusters (MSNCs) exhibit unique quantum properties.
  • Controlling the synthesis of stable, luminescent MSNCs remains a challenge.
  • Developing environmentally friendly synthesis routes is crucial for nanomaterial production.

Purpose of the Study:

  • To develop a green synthesis method for Cadmium Selenide (CdSe) magic-sized nanoclusters (MSNCs).
  • To investigate the efficacy of various edible oils as capping agents in MSNCs formation.
  • To assess the photoluminescence stability and emission properties of the synthesized CdSe MSNCs.

Main Methods:

  • Green synthesis of CdSe MSNCs using cyclo-octeno-1,2,3-selenadiazole as the selenium source.
  • Decomposition of the selenium precursor at 150 °C in a high-boiling solvent.

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  • Utilizing edible oils (olive, mustard, castor, coconut, cod liver) as capping agents.
  • Comparative analysis of different oils' effects on MSNC formation and properties.

    • Main Results:

    • Successful synthesis of CdSe MSNCs using edible oils as capping agents.
    • Identification of a specific edible oil that yields CdSe MSNCs with stable white light emission.
    • Demonstration of bright white light emission from CdSe MSNCs upon excitation with 365 nm light.
    • Long-term stability (over 12 months) of white light emission from CdSe MSNCs synthesized with a selected oil.

    Conclusions:

    • Edible oils can serve as effective green capping agents for CdSe MSNC synthesis.
    • The choice of capping agent significantly influences the photoluminescence stability and emission color of CdSe MSNCs.
    • The developed method offers a sustainable route to produce highly stable, white-light-emitting CdSe MSNCs.