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Studying the Surface Morphology and Optical Properties of 4-Methylbenzenthiol Capped Gold Nanoparticles Films with Annealing | ||
| Journal of Kufa - physics | ||
| Article 1, Volume 8, Issue 2, 2016, Pages 31-38 | ||
| Author | ||
| Rajaa R. Abbas | ||
| Abstract | ||
| Surface morphology and optical properties in term of Surface Plasmon Resonance (SPR) of 4-methylbenzenthiol capped gold nanoparticles using Langmuir-Schaefer (LS) technique were studied. 1 and 3-layers nanoparticle films with 1mg/ml in concentration have been prepared. Gold nanoparticles films were annealed at 200oC for 1h. Film’s morphology and SPR before and after annealing were investigated by Atomic Force Microscopy (AFM) and UV-Vis spectrophotometer respectively. After annealing, a drastic change in the shape and size of the nanoparticles was revealed; however, no significant effect of film thickness on the gold nanoparticle size was observed. UV-Vis spectra showed reduction in intensity and decrease in width of SPR peaks as a result to annealing. Blueshift in SPR position has been observed for both heat treated films. | ||
| Keywords | ||
| Nanoparticles; Optical properties; Annealing | ||
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