Optimization of gold nanoparticle photoluminescence by alkanethiolation.
نویسندگان
چکیده
Surface thiolation affects the size of gold nanoparticles and the presence of 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 by intense X-ray irradiation. Photoluminescence is present for the smallest nanoparticles, but its intensity becomes more intense as the carbon chain length increases, achieving a quantum efficiency of 28% with a 16-mercaptohexadecanoic acid coating.
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عنوان ژورنال:
- Chemical communications
دوره 51 37 شماره
صفحات -
تاریخ انتشار 2015