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Citation: He Ping, Shen Xing-Hai, Gao Hong-Cheng. Photoluminescence Phenomenon during the Formation of Silver Nanoparticles[J]. Acta Physico-Chimica Sinica, ;2004, 20(10): 1200-1203. doi: 10.3866/PKU.WHXB20041007 shu

Photoluminescence Phenomenon during the Formation of Silver Nanoparticles

1.
Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing　100871

Received Date: 3 March 2004
Available Online: 15 October 2004

Silver nanoparticles were synthesized by the method of γ-irradiation in the water-in-oil (w/o) microemulsion composed of SDS (sodium dodecyl sulfate), n-hexanol, cyclohexane and aqueous solution. Light emission in different formation stages was observed, and we found that in our case it was mainly the clusters but not nanoparticles that caused the photoluminescence, with the proof from the absorption spectra and transmission electron microscope (TEM). And it was also suggested that electron and/or hole states can be perturbed by surface states, as indicated by the dependence of the emission spectrum on the nature of the surface. Silver nanoparticles can self-assemble to form the superlattics due to the very narrow size distribution.
- Photoluminescence;Silver;Nanoparticle;Cluster;γ-irradiation
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