Absorption spectroscopy of silver atoms and nanomolecular studies of DNA and some organic structures

The goal of present research is the absorption-spectroscopic studies of resonance interaction of silver atoms in different conditions: 1. In silver nanoparticle; 2. Bound to double helix of DNA; 3. In complex with oligodeoxynucleotides (dodecamer d(CGCGAATTCGCG)); 4. Incapsulated in polyamidoamine (PAMAM) of fourth generation G4 (~4 nm); 5. Absorbed by cellophane membrane. It is shown that AgNPs represent liquid drops which moisture the DNA surface at interaction. At photo-irradiation of AgNPs - DNA complex DNA dependant conformational transition takes place due to fast and intensive heating. It is shown also that in the interaction of atoms of silver reduced by ascorbic acid and in photo - desorption of AgNPs DNA double helix serves as a matrix, namely together with the silver atoms forms the rigid one-dimensional periodic structure.