title: Dielectric spectra broadening as a signature for dipole-matrix interaction. III. Water in adenosine monophosphate/adenosine-5'-triphosphate solutions.
abstract: In this, the third part of our series on the dielectric spectrum symmetrical broadening of water, we consider the nucleotide aqueous solutions. Where in Parts I [E. Levy et al., J. Chem. Phys. 136, 114502 (2012)] and II [E. Levy et al., J. Chem. Phys. 136, 114503 (2012)], the dipole-dipole or ion-dipole interaction had a dominant feature, now the interplay between these two types of dipole-matrix interactions will be considered. We present the results of high frequency dielectric measurements of different concentrations of adenosine monophosphate/adenosine-5'-triphosphate aqueous solutions. We observed the Cole-Cole broadening of the main relaxation peak of the solvent in the solutions. Moreover, depending on the nucleotide concentration, we observed both types of dipole-matrix interaction. The 3D trajectory approach (described in detail in Part I) is applied in order to highlight the differences between the two types of interaction.
authors.affiliation: Department of Applied Physics, The Hebrew University of Jerusalem, Givat Ram, Jerusalem, 91904, Israel.
authors.forename: Alexander
authors.initials: A
authors.lastname: Puzenko
authors.forename: Evgeniya
authors.initials: E
authors.lastname: Levy
authors.forename: Andrey
authors.initials: A
authors.lastname: Shendrik
authors.forename: Mark S
authors.initials: MS
authors.lastname: Talary
authors.forename: Andreas
authors.initials: A
authors.lastname: Caduff
authors.forename: Yuri
authors.initials: Y
authors.lastname: Feldman
mesh_terms: D000249:Adenosine Monophosphate / Q000737:chemistry*; D000255:Adenosine Triphosphate / Q000737:chemistry*; D003198:Computer Simulation; D008956:Models, Chemical; D012996:Solutions / Q000737:chemistry; D013057:Spectrum Analysis / Q000379:methods*; D014867:Water / Q000737:chemistry*
chemical_list: D012996:Solutions; D014867:Water; D000249:Adenosine Monophosphate; D000255:Adenosine Triphosphate