DNA METAL COMPLEXES AND METALLIZATION OF A MACROMOLECULE IN SOLUTION
N. A. Kasyanenko1, Z. Qiushi1, M. S. Varshavskii1, V. M. Bakulev1, V. N. Demidov2
1St. Petersburg State University, St. Petersburg Russia
2St. Petersburg State Institute of Technology, St. Petersburg, Russia
Keywords: ДНК, наночастицы и люминесцирующие нанокластеры серебра, Ag(Phen)NO, цис-ДДП, DNA, silver nanoparticles and luminescent nanoclusters, cis-DDP
Abstract
The work considers DNA complexes with silver ions and a silver coordination compound containing phenanthroline ligands. The formation conditions of luminescent silver nanoclusters and nanoparticles having a plasmon resonance are analyzed. It is shown that nanoclusters form on reducing silver ions after the formation of their coordination bonds with nitrogenous bases of the macromolecule. The Ag(Phen)2NO3 compound cannot form such a bond and interacts with DNA by intercalating one of the phenanthroline ligands into a double helix. The preliminary binding of cis -DDP with DNA hinders the formation of silver nanoclusters.
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