Abstract
In this paper, the optical properties of gold nanorods (GNRs) tuned by lead sulfide (PbS) were studied. GNRs used in this work were synthesized by seed-mediated methods. Using electrostatic self-assembly methods, GNRs were modified by repetition of adsorbing oppositely charged polyelectrolyte. Then GNR-PbS nanostructure was fabricated by alternatively adsorbing Pb(2+) and S(2-) ions on the surface of polyelectrolyte-modified-GNRs. The formation of PbS nanocrystals on GNRs can effectively regulate their optical properties, including longitudinal surface plasmon resonance (LSPR) and fluorescence.
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