Naslov
Dynamics and structure of biopolyelectrolytes in repulsion regime characterized by dielectric spectroscopy

Autori
Tomić, Silvia ; Grgičin, Danijel ; Ivek, Tomislav ; Vuletić, Tomislav ; Dolanski Babić, Sanja ; Podgornik, Rudolf

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Physica B: Condensed Matter (0921-4526) 407 (2012) ; 1958-1963 / Serguei Brazovskii, Natasha Kirova and Pierre Monceau - : Elsevier, 2012, 1958-1963

Skup
International School and Workshop on Electronic Crystals

Mjesto i datum
Cargèse, Francuska, 15.08.2011. - 27.08.2011

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Polyelectrolytes; Repulsive regime of interactions; Dielectric properties; Dynamics and conformational changes; polyvalent counterions

Sažetak
We overview the study of biopolyelectrolytes by dielectric spectroscopy technique by primarily focusing on the case of repulsive regime of intersegment interactions mediated by univalent counterions. Two observed dielectric relaxations in 100 Hz - 100 MHz frequency range due to diffusive motion of counterions are related to polyelectrolyte structural properties: the high frequency mode probes the structural organization of the polyion network in solution, while the low frequency mode is correlated with single polyion conformational properties. Open issues are highlighted and prospects for further research with polyvalent counterions are designated in order to study the crossover from repulsive to attractive regime of intersegment interactions.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Rad je prezentiran na skupu International School and Workshop on Electronic Crystals (ECRYS-2011), održanom od 15.-27.08.2011, u Cargèse, Francuska

POVEZANOST RADA