Issue 37, 2015
From the journal:

Chemical Communications

Optimization of gold nanoparticle photoluminescence by alkanethiolation†

Sheng-Feng Lai,ab   Hui-Ru Tan,c   Eng Soon Tok,*d   Yu-Han Chen,b   Edwin B. L. Ong,b   Min-Tsang Li,b   Yi-Yun Chen,b   Fan-Ching Chien,e   Peilin Chen,f   G. Margaritondog  and  Y. Hwu*abh  

* Corresponding authors

a Department of Engineering Science, National Cheng Kung University, Tainan 701, Taiwan

b Institute of Physics, Academia Sinica, Taipei 115, Taiwan

c Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602, Singapore

d Physics Department, National University of Singapore, Singapore 117542, Singapore
E-mail: tokes@nus.edu.sg

e Department of Optics and Photonics, National Central University, Chun-Li 320, Taiwan

f Research Center for Applied Sciences, Academia Sinica, Taipei 115, Taiwan

g Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

h Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan
E-mail: phhwu@sinica.edu.tw

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.

Graphical abstract: Optimization of gold nanoparticle photoluminescence by alkanethiolation

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Article information

DOI
https://doi.org/10.1039/C5CC01229E
Article type
Communication
Submitted
11 Feb 2015
Accepted
28 Mar 2015
First published
30 Mar 2015

Chem. Commun., 2015,51, 7954-7957

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Optimization of gold nanoparticle photoluminescence by alkanethiolation

S. Lai, H. Tan, E. S. Tok, Y. Chen, E. B. L. Ong, M. Li, Y. Chen, F. Chien, P. Chen, G. Margaritondo and Y. Hwu, Chem. Commun., 2015, 51, 7954 DOI: 10.1039/C5CC01229E

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