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Updated: Apr 23, 2026

Synthesis of Bimetallic Pt/Sn-based Nanoparticles in Ionic Liquids
Published on: August 23, 2018
Metallization of single-stranded polyI by Zn(2+) ions in neutral solutions
Victor A Sorokin1, Vladimir A Valeev, Evgeniya L Usenko
1B.I. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine , 47 Lenin Avenue, Kharkov, 61103, Ukraine.
Abstract:
Metallization of single-stranded polyinosinic acid (polyI) by Zn(2+) ions at pH 7.0 was studied by differential UV spectroscopy at different temperatures. It was found that polyI is metallized at N7 and N1 atoms of hypoxanthine. The concentration dependence of the degree of binding of Zn(2+) ions to both N7 and N1 sites was obtained, and the corresponding binding constants were determined. Metallization of N1 occurs due to Zn(2+) substituting the imino protons and is effective not only at alkaline but also at neutral pH. This makes multistranded polyI-based systems more promising candidates for use in nanoelectronics than natural DNA sequences, metallization of which can be achieved only at alkaline pH.
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