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Journal of Nanoparticle Research

, Volume 13, Issue 9, pp 3861–3865 | Cite as

Effect of silver nanoparticles with different shapes on luminescence of samarium complex at two different excitation wavelengths

  • Qingru Wang
  • Feng Song
  • Shangxin Lin
  • Chengguo Ming
  • Hongyan Zhao
  • Jiadong Liu
  • Chao Zhang
  • Edwin Y. B. Pun
Research Paper

Abstract

The luminescence properties of Sm(TTFA)3 complex in presence of the silver (Ag) nanoparticles with size ranged from 80 nm to 120 nm and different shapes (nanorod, cube, tetrahedron, and nanowire) were investigated at two different excitation wavelengths of 397 nm and 350 nm, which was resonant and off-resonant excitation, respectively. The luminescence enhancement for the resonant excitation was much greater than that for the off-resonant excitation. The electric and magnetic dipole transitions were affected by the Ag nanoparticles and the results showed that their emission enhancement depended on the balance of the overlap between the emission wavelengths and the localized surface plasmon resonant of nanoparticles and their sensibility to the variation of local environments. The enhancement and quenching of the luminescence were both observed at the resonant excitation.

Keywords

Silver nanoparticles Localized surface plasmon resonance Multimodal resonances Luminescence Rare earth complex Metal nanostructures 

Notes

Acknowledgments

The study was supported by the National Science Foundation of China, grant no. NSFC 90923035, the 973 program, grant no. 2006CB302904, and the Research Grants Council of the Hong Kong Special Administrative Region, China (Project no. CityU 119206).

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Qingru Wang
    • 1
    • 2
  • Feng Song
    • 1
    • 2
  • Shangxin Lin
    • 3
  • Chengguo Ming
    • 1
    • 2
  • Hongyan Zhao
    • 1
    • 2
  • Jiadong Liu
    • 1
    • 2
  • Chao Zhang
    • 1
    • 2
  • Edwin Y. B. Pun
    • 3
  1. 1.Photonics Center, College of Physics ScienceNankai UniversityTianjinChina
  2. 2.Key Laboratory of Weak Light Nonlinear Photonics, MOENankai UniversityTianjinChina
  3. 3.Department of Electronic EngineeringCity University of Hong KongHong KongChina

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