title: Temperature dependence of DNA dielectric dispersion at radiofrequency.
abstract: We have studied the dielectric behavior of DNA aqueous solutions at various ionic strengths and in the presence of the specific DNA ligand ethidium bromide, in the frequency range 1 MHz-1 GHz, at different temperatures ranging from 5 to 40 degrees C. The activation enthalpies of the dielectric relaxations studied were obtained by Arrhenius plots of In(tau T)-1 vs. T-1. The results are consistent with a counterion fluctuation model as previously developed by Mandel and colleagues.
authors.affiliation: Dipartimento di Genetica e Biologia Molecolare, Università di Roma, La Sapienza, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Pedone
authors.forename: A
authors.initials: A
authors.lastname: Bonincontro
mesh_terms: D004247:DNA / Q000737:chemistry*; D004563:Electrochemistry; D008956:Models, Chemical; D011846:Radio Waves; D012996:Solutions; D013696:Temperature; D013816:Thermodynamics
chemical_list: D012996:Solutions; D004247:DNA