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. Issue 22 (11th May 2021)

• Record Type: Journal Article
• Authors: Dairaku, Takenori; Kawai, Rika; Kanaba, Teppei; Ono, Tetsuya; Yoshida, Kentaro; Sato, Hajime; Nozawa-Kumada, Kanako; Kondo, Yoshinori; Kondo, Jiro; Ono, Akira; Tanaka, Yoshiyuki; Kashiwagi, Yoshitomo
• Is Part Of: Dalton transactions. Volume 50:Issue 22(2021)
• Page Start: 7633
• Page End: 7639
• Publication Date: 2021-05-11
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d1dt00975c
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : [Ag(cytidine)2 ] + formation can be utilized for controlling the redox potential of the Ag + /Ag couple. Abstract : The redox properties of metallo-base pairs remain to be elucidated. Herein, we report the detailed 1 H/ 13 C/ 109 Ag 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.