Colloidal Synthesis of Luminescent Quantum Dots in Macadamia Oil

Abstract

Semiconductor nanocrystals or quantum dots are becoming increasingly popular in research fields as wide ranging as cancer therapies, solar energy and disease detection. Colloidal synthesis provides a low-cost method of producing high quality quantum dots with narrow size distributions. The controllable nature of colloidal synthesis allows researchers to design the size, shape and surface functionalization of the resulting particles.

Here we investigate a simple low temperature method to produce CdSe quantum dots. The quantum dots were grown in solution by dissolving the CdO precursor in a mixture of macadamia oil, and oleic acid. Elemental Se was heated separately before the two mixtures were combined under an inert atmosphere. The injection temperature, reaction temperature and oleic acid concentration were all varied.

Optical absorption and photoluminescence spectroscopies showed the size of the quantum dots increased with time, temperature and oleic acid concentration. Dynamic light scattering has shown the hydrodynamic particle size to range from 7 to 22nm and the samples for up to 6 months.

This is a preview of subscription content, access via your institution.

References

  1. 1.

    A. L. Rogach, A. Eychmüller, S. G. Hickey and S. V. Kershaw, Small, 3, 536 (2007).

    CAS  Article  Google Scholar 

  2. 2.

    M. G. Bawendi, P. J. Carroll, W. L. Wilson and L. E. Brus, J.Chem.Phys., 96, 946 (1992).

    CAS  Article  Google Scholar 

  3. 3.

    L. Spanhel, M. Haase, H. Weller and A. Henglein, J.Am.Chem.Soc. 109, 5649 (1987).

    CAS  Article  Google Scholar 

  4. 4.

    W. C. W. Chan, D. J. Maxwell, X. H. Gao, R. E. Bailey, M. Y. Han and S. M. Nie Curr.Opin.Biotechnol. 13, 40 (2002).

    CAS  Article  Google Scholar 

  5. 5.

    C. B. Murray, D. J. Norris and M. G. Bawendi, J.Am.Chem.Soc. 115, 8706 (1993).

    CAS  Article  Google Scholar 

  6. 6.

    J. E. Bowen Katari, V. L. Colvi and A. P. Alivisatos, J. Phys. Chem. 98, 4109 (1994).

    Article  Google Scholar 

  7. 7.

    S. Sapra, A. L. Rogach and J. Feldmann, J. Mater. Chem., 16, 3391 (2006).

    CAS  Article  Google Scholar 

  8. 8.

    L. S. Maguire, S. M. O’Sullivan, K. Galvin, T. P. O’Connor and N. M. O’Brien, Internation Journal of Food Sciences and Nutrition, 155, 171 (2004).

    Article  Google Scholar 

  9. 9.

    B. R. Fisher, H. J. Eisler, N. E. Stott and M. G. Bawendi, J. Phys. Chem. B, 108, 143 (2004).

    CAS  Article  Google Scholar 

  10. 10.

    W. W. Yu, L. Qu, W. Guo and X. Peng, Chem. Mater., 15, 2854 (2003)

    CAS  Article  Google Scholar 

  11. 11.

    B. Pan, R. He, F. Gao, D. Cui and Y. Zhang, Journal of Crystal Growth, 286, 318 (2006).

    CAS  Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Li, M., Chan, W.L. & Gardner, H.C. Colloidal Synthesis of Luminescent Quantum Dots in Macadamia Oil. MRS Online Proceedings Library 1546, 302 (2013). https://doi.org/10.1557/opl.2013.630

Download citation