Efficient Near‐Infrared Electrochemiluminescence from Au 18 Nanoclusters
Abstract Bright, near‐infrared electrochemiluminescence (NIR–ECL) of Au 18 nanoclusters is reported herein. Spooling ECL and photoluminescence spectroscopy were used to track and link NIR emissions at 832 and 848 nm to three emissive species, Au 18 0 *, Au 18 1+ * and Au 18 2+ *, with a considerably...
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| Published in | Chemistry : a European journal Vol. 27; no. 60; pp. 14821 - 14825 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
25.10.2021
|
| Online Access | Get full text |
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| Summary: | Abstract
Bright, near‐infrared electrochemiluminescence (NIR–ECL) of Au
18
nanoclusters is reported herein. Spooling ECL and photoluminescence spectroscopy were used to track and link NIR emissions at 832 and 848 nm to three emissive species, Au
18
0
*, Au
18
1+
* and Au
18
2+
*, with a considerably high ECL efficiency of 5.5 relative to that of the gold standard Ru(bpy)
3
2+
/TPrA (with 5–6 % reported ECL efficiency). The unprecedentedly high efficiency is due to the overlapped oxidation potentials of Au
18
0
and tri‐
n
‐propylamine as co‐reactant, the exposed facets of Au
18
0
gold core, and electrocatalytic loops. These discoveries will add a new member to the efficient NIR‐ECL gold nanoclusters family and bring more potential applications. |
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| ISSN: | 0947-6539 1521-3765 |
| DOI: | 10.1002/chem.202102926 |