Effect of cytosine-Ag+-cytosine base pairing on the redox potential of the Ag+/Ag couple and the chemical reduction of Ag+ to Ag by tetrathiafulvalene
Effect of cytosine-Ag+-cytosine base pairing on the redox potential of the Ag+/Ag couple and the chemical reduction of Ag+ to Ag by tetrathiafulvalene
复制标题
胞嘧啶-Ag-胞嘧啶碱基配对对Ag/Ag对氧化还原电位以及四硫富瓦烯将Ag化学还原为Ag的影响
DOI：
10.1039/d1dt00975c
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发表时间：
2021
影响因子：
4
通讯作者：
Yoshiyuki Tanaka and Yoshitomo Kashiwagi
中科院分区：
文献类型：
--
作者：
Takenori Dairaku;Rika Kawai;Teppei Kanaba;Tetsuya Ono;Kentaro Yoshida;Hajime Sato;Kanako Nozawa-Kumada;Yoshinori Kondo;Jiro Kondo;Akira Ono;Yoshiyuki Tanaka and Yoshitomo Kashiwagi
金属碱基对的氧化还原性质仍有待阐明。本文报道了[Ag（胞苷）2]+配合物作为分离的胞嘧啶- Ag+ -胞嘧啶（C-Ag + -C）碱基对的详细1H/13C/109Ag NMR波谱和循环伏安表征。我们还利用循环伏安法对胞苷/Ag+和其他核苷/Ag+体系进行了比较研究。此外，为了评估[Ag（胞苷）2]+的形成对Ag+化学还原为Ag的影响，我们利用了Ag+和四硫代fulvalene （TTF）之间的氧化还原反应。我们发现Ag+介导的碱基配对降低了Ag+/Ag对的氧化还原电位。此外，C-Ag + -C碱基配对使得它比其他核苷/Ag+体系更难以还原捕获的Ag+离子。值得一提的是，胞苷/Ag+体系可用于控制Ag+/Ag对在DMSO中的氧化还原电位。胞苷/Ag+体系的这一特性可以利用Ag+和TTF之间的氧化还原反应合成银纳米颗粒。
The redox properties of metallo-base pairs remain to be elucidated. Herein, we report the detailed 1H/13C/109Ag NMR spectroscopic and cyclic voltammetric characterisation of the [Ag(cytidine)2]+ complex as isolated cytosine–Ag+–cytosine (C–Ag+–C) base pairs. We also performed comparative studies between cytidine/Ag+ and other nucleoside/Ag+ systems by using cyclic voltammetry measurements. In addition, to evaluate the effect of [Ag(cytidine)2]+ formation on the chemical reduction of Ag+ to Ag, we utilised the redox reaction between Ag+ and tetrathiafulvalene (TTF). We found that Ag+-mediated base pairing lowers the redox potential of the Ag+/Ag couple. In addition, C–Ag+–C base pairing makes it more difficult to reduce captured Ag+ ions than in other nucleoside/Ag+ systems. Remarkably, the cytidine/Ag+ system can be utilised to control the redox potential of the Ag+/Ag couple in DMSO. This feature of the cytidine/Ag+ system may be exploited for Ag nanoparticle synthesis by using the redox reaction between Ag+ and TTF.