Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-30T07:11:17.938Z Has data issue: false hasContentIssue false
  • English
  • Français

Colloidal Synthesis of Luminescent Quantum Dots in Macadamia Oil

Published online by Cambridge University Press:  17 May 2013

Menglu Li ,
Weng Leong Chan  and
Hannah C. Gardner
Menglu Li
Affiliation:
Biomedical Engineering Group, School of Engineering, Nanyang Polytechnic, 180 Ang Mo Kio Ave 8, Singapore 569830.
Weng Leong Chan
Affiliation:
Biomedical Engineering Group, School of Engineering, Nanyang Polytechnic, 180 Ang Mo Kio Ave 8, Singapore 569830.
Hannah C. Gardner
Affiliation:
Biomedical Engineering Group, School of Engineering, Nanyang Polytechnic, 180 Ang Mo Kio Ave 8, Singapore 569830.
Get access

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.

Keywords

chemical synthesisluminescencenanoscale
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1546: Symposium L – Nanoparticle Manufacturing, Functionalization, Assembly and Integration , 2013 , mrss13-1546-l03-02
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Rogach, A. L., Eychmüller, A., Hickey, S. G. and Kershaw, S. V., Small, 3, 536 (2007).CrossRefGoogle Scholar
Bawendi, M. G., Carroll, P. J., Wilson, W. L. and Brus, L. E., J.Chem.Phys., 96, 946 (1992).CrossRefGoogle Scholar
Spanhel, L., Haase, M., Weller, H. and Henglein, A., J.Am.Chem.Soc. 109, 5649 (1987).CrossRefGoogle Scholar
Chan, W. C. W., Maxwell, D. J., Gao, X. H., Bailey, R. E., Han, M. Y. and Nie, S. M. Curr.Opin.Biotechnol. 13, 40 (2002).CrossRefGoogle Scholar
Murray, C. B., Norris, D. J. and Bawendi, M. G., J.Am.Chem.Soc. 115, 8706 (1993).CrossRefGoogle Scholar
Bowen Katari, J. E., Colvi, V. L. and Alivisatos, A. P., J. Phys. Chem. 98, 4109 (1994).CrossRefGoogle Scholar
Sapra, S., Rogach, A. L. and Feldmann, J., J. Mater. Chem., 16, 3391 (2006).CrossRefGoogle Scholar
Maguire, L. S., O’Sullivan, S. M., Galvin, K., O’Connor, T. P. and O’Brien, N. M., Internation Journal of Food Sciences and Nutrition, 155, 171 (2004).CrossRefGoogle Scholar
Fisher, B. R., Eisler, H. J., Stott, N. E. and Bawendi, M. G., J. Phys. Chem. B, 108, 143 (2004).CrossRefGoogle Scholar
Yu, W. W., Qu, L., Guo, W. and Peng, X., Chem. Mater., 15, 2854 (2003)CrossRefGoogle Scholar
Pan, B., He, R., Gao, F., Cui, D. and Zhang, Y., Journal of Crystal Growth, 286, 318 (2006).CrossRefGoogle Scholar