Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 17, Pages 14929-14934Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b02446
Keywords
Au nanoclusters; electrogenerated chemiluminescence; electrochemical reduction; chemical reduction; valence state
Funding
- National Natural Science Foundation of China [21175023, 21675024, 21405015]
- Joint Funds for the Innovation of Science and Technology, Fujian Province [2016Y9056, 2016Y9054]
- Program for Innovative leading talents in Fujian Province [2016B016]
- Natural Science Foundation of Fujian Province [2016J01427]
- Medical Innovation Project of Fujian Province [2014-CX-6]
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This work elucidated the valence states effect on the electrogenerated chemiluminescence (ECL) performance of gold nanocluster (AuNC). The N-acetyl-L-cysteine-AuNCs (NAC-AuNCs) and the electrochemical reduction method for reducing the AuNCs were first employed to this study. Results demonstrate that the electrochemical reduction degree of the AuNCs depended on the reduction potential, and the enhancement of the ECL signals was positively correlated with the reduction degree of AuNCs, which indicated that the valence state of Au plays a vital role in the ECL performance of AuNCs. Furthermore, the proposed method has been successfully extended to the chemical reduction technique and other nanoclusters. Therefore, an excellent AuNC-based ECL method with various advantages, such as simple preparation, lower toxicity, high sensitivity, and Phi(ECL), and excellent stability, has been proposed. This approach not only opens up a new avenue for designing and developing ECL device from other functional-metal based NCs, but also extends the huge potential application in the ECL sensing.
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