Skip to main content
Log in

Surface-enhanced Raman effect in hybrid metal–semiconductor nanoparticle assemblies

  • Brief Communication
  • Published:
Journal of Nanoparticle Research Aims and scope Submit manuscript

Abstract

Hybrid metal–semiconductor nanoparticles consisting of silver nanoparticle cores (AgNPs) coated with a layer of CdSe quantum dots (QDs) have been studied by Raman spectroscopy. The hybrid nanoparticles were prepared via electrostatic interaction by mixing aqueous suspensions of QDs and AgNPs, where opposite charges on the AgNPs and QDs surfaces were induced by opportunely selected capping agents. Assemblies of such hybrid nanoparticles show an increased intensity of the Raman spectrum of up to 500 times, when compared to that of the sole QDs. This enhancement is attributed to the SERS effect (Surface-enhanced Raman scattering). Such enhancement of the Raman modes suggests several opportunities for further research, both in imaging and sensing applications.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4

References

Download references

Acknowledgments

A.B. is grateful to Fondo Trieste for partial financial support. The authors are grateful to Luca Cozzarini for insight into experimental details.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Vanni Lughi.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Supplementary material 1 (DOCX 351 kb)

Rights and permissions

Reprints and permissions

About this article

Cite this article

Lughi, V., Bonifacio, A., Barbone, M. et al. Surface-enhanced Raman effect in hybrid metal–semiconductor nanoparticle assemblies. J Nanopart Res 15, 1663 (2013). https://doi.org/10.1007/s11051-013-1663-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s11051-013-1663-9

Keywords

Navigation