Citation: Tian-Tian Chen, Qiu-Yun Chen, Ming-Yang Liu. GAG-containing nucleotides as mediators of DNA-silver clusters and iron-DNA interplay[J]. Chinese Chemical Letters, ;2016, 27(03): 395-398. doi: 10.1016/j.cclet.2015.12.013 shu

GAG-containing nucleotides as mediators of DNA-silver clusters and iron-DNA interplay

a.
a. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China;
b.
b. State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China

Corresponding author: Qiu-Yun Chen,
Received Date: 4 September 2015
Available Online: 18 September 2015
Fund Project: Financial support of National Natural Science Foundation of China (No.21271090) (No.21271090)

New types of fluorescence DNA-based silver nanoclusters (DNA_n-AgNCs, n=1, 2, 3c, 4c, 5c) were synthesized by C3T-rich nucleotides as templates. It is found that the assembly of DNA_n-AgNCs with nucleotides containing GAG sequences produce silver clusters with an enhanced red emission. Results indicate that GAG is the good enhancer of DNA_n-AgNCs constructed by C3T-rich nucleotides. The fluorescence titration reveals that enhanced red emission is sensitive to Fe(Ⅲ/Ⅱ) ions with the formation of non-emission nanoclusters. Thus, the GAG-containing nucleotide can be an enhancer for the emission of silver clusters with C3T-rich nucleotide and a mediator of the iron-cluster interplay.
- DNA,
- Silver cluster,
- Fluorescence,
- Iron
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沈阳化工大学材料科学与工程学院沈阳 110142