期刊
ACS OMEGA
卷 4, 期 4, 页码 7895-7902出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.9b00614
关键词
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资金
- Center for Synthetic Biology at Copenhagen University - UNIK research initiative of the Danish Ministry of Science, Technology and Innovation [09-065274]
- University of Copenhagen's Excellence Programme for Interdisciplinary Research (bioSYNergy)
- Villum Foundation [VKR023115]
- Carlsberg Foundation [CF14-0388, CF17-0470]
We investigated an ss-DNA sequence that can stabilize a red- and a green-emissive silver nanocluster (DNA-AgNC). These two emitters can convert between each other in a reversible way. The change from red- to green-emitting DNA-AgNCs can be triggered by the addition of H2O2, while the opposite conversion can be achieved by the addition of NaBH4. Besides demonstrating the switching between red- and green-emissive DNA-AgNCs and determining the recoverability, we fully characterized the photophysical properties, such as steady-state emission, quantum yield, fluorescence lifetime, and anisotropy of the two emissive species. Understanding the mechanism behind the remarkable conversion between the two emitters could lead to the development of a new range of DNA-AgNC-based ratiometric sensors.
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