EPR study of crystalline and glassy ethanol

Kveder, Marina; Merunka, Dalibor; Jokić, Milan; Rakvin, Boris

doi:10.1016/j.jnoncrysol.2008.05.062

Pregled bibliografske jedinice broj: 370983

EPR study of crystalline and glassy ethanol

Kveder, Marina; Merunka, Dalibor; Jokić, Milan; Rakvin, Boris

EPR study of crystalline and glassy ethanol // Journal of Non-Crystalline Solids, 354 (2008), 47-51; 5201-5203 doi:10.1016/j.jnoncrysol.2008.05.062 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 370983 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
EPR study of crystalline and glassy ethanol

Autori
Kveder, Marina ; Merunka, Dalibor ; Jokić, Milan ; Rakvin, Boris

Izvornik
Journal of Non-Crystalline Solids (0022-3093) 354 (2008), 47-51; 5201-5203

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
resonance methods ; Electron spin resonance

Sažetak
Pulsed X-band electron paramagnetic resonance (EPR) spectroscopy was applied in studying molecular dynamics in two different solid ethanol matrices. Nitroxyl radicals as paramagnetic reporter groups were embedded in crystalline and glassy ethanol and the phase memory time, Tm, was investigated at 5-80 K. Temperature variation revealed a maximum in 1/Tm centred around 50 K and a small linear decrease with temperature, below ca. 25 K. Faster phase memory time relaxation in crystalline ethanol than in ethanol glass was observed throughout the temperature range studied. This can be attributed to differences in spectral diffusion due to distinct molecular packing densities.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija, Biologija

POVEZANOST RADA

Projekti:
098-0982904-2912 - Samo-udruživanje u gelovima i sinteza funkcionalnih hibridnih materijala (Frkanec, Leo, MZOS ) ( CroRIS)
098-0982915-2939 - Molekulska struktura i dinamika sustava s paramagnetskim česticama (Ilakovac-Kveder, Marina, MZOS ) ( CroRIS)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Marina Ilakovac-Kveder (autor)