Optimization of Gold Nanoparticle Photoluminescence by Alkanethiolation
作者： Sheng-Feng Lai , Hui-Ru Tan , Eng Soon Tok , Yu-Han Chen , Edwin B. L. Ong
DOI: 10.1039/C5CC01229E
关键词: Photoluminescence 、 Carbon chain 、 Coating 、 Nanoparticle 、 Materials science 、 Colloidal gold 、 Irradiation 、 Photochemistry 、 Quantum efficiency 、 Luminescence
摘要: Surface thiolation affects the size of gold nanoparticles and presence visible luminescence under UV stimulation. We explored these phenomena by analysing alkanethiolate coatings with different carbon chain lengths, from 3-mercaptopropionic acid to 16-mercaptohexadecanoic acid, synthesized intense X-ray irradiation. Photoluminescence is present for smallest nanoparticles, but its intensity becomes more as length increases, achieving a quantum efficiency 28% coating.
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