| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 594993 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2011 | 5 Pages |
Here, we report synthesis of star shape gold nanoparticles using seed mediated growth process. Ag+ ions have been used to catalyze the anisotropic growth of gold particles in the growth solution. Star like gold nanoparticles are characterized using UV–vis and TEM study. Excitation of localized surface plasmon of star shaped gold nanoparticles by the visible radiation results broad and intense localized surface plasmon resonance excitation band. Emission spectra of nanostars upon excitation at 230 nm and 480 nm has been explained due to localized plasmon at the edge of star like particle and the longitudinal mode of these anisotropically grown gold nanoparticles.
Graphical abstract. Star shaped gold hydrosol synthesized through seed mediated growth process.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ High yield syntheses of star shaped gold nanoparticles in aqueous medium were presented. ▶ Broad SPR band were observed as star shaped particles interact strongly with visible radiation. ▶ Photoluminescence were observed upon excitation to the longitudinal SPR modes as well as to the localized Plasmon at the tip of nanostars.
