학술논문
Optimization of gold nanoparticle photoluminescence by alkanethiolation.
Document Type
Article
Author
Source
Subject
*GOLD nanoparticles
*PHOTOLUMINESCENCE
*THIOLS
*ULTRAVIOLET radiation
*QUANTUM efficiency
*QUANTUM chemistry
*DECANOIC acid
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Language
ISSN
1359-7345
Abstract
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. [ABSTRACT FROM AUTHOR]