Journal
NANOMATERIALS
Volume 11, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/nano11010046
Keywords
post-synthesis modification; Au nanoclusters; dopamine; photoluminescence; electrochemiluminescence
Categories
Funding
- National Research Foundation of Korea - Ministry of Science, ICT and Future Planning [NRF-2020R1A2C2013790, NRF-2019M3E6A1065038]
Ask authors/readers for more resources
The study introduces a post-synthesis functionalization method for the shell of Au nanoclusters synthesized using glutathione, which can tailor the photoluminescence and electrochemiluminescence features of the nanoclusters. Functionalization of the cluster shell enhances the PL intensity through rigidification, but does not enhance the NIR ECL of the NCs.
Here, we report a post-synthesis functionalization of the shell of Au nanoclusters (NCs) synthesized using glutathione as a thiolate ligand. The as-synthesized Au NCs are subjected to the post-synthesis functionalization via amidic coupling of dopamine on the cluster shell to tailor photoluminescence (PL) and electrochemiluminescence (ECL) features of the Au NCs. Because the NCs' PL at ca. 610 nm is primarily ascribed to the Au(I)-thiolate (SG) motifs on the cluster shell of the NCs, the post-synthesis functionalization of the cluster shell enhanced the PL intensity of the Au NCs via rigidification of the cluster shell. In contrast to the PL enhancement, the post-synthesis modification of the cluster shell does not enhance the near-infrared (NIR) ECL of the NCs because the NIR ECL at ca. 800 nm is ascribed to the Au(0)-SG motifs in the metallic core of the NCs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available