The first quasielastic neutron scattering experiments 〈QENS〉 performed on a non discotic metallo-mesogenes, namely the coordination compound 〈DOBBA〉2Cu are reported 〈〈DOBBA〉2Cu〉 is the 〈N-〈4-dodecyl-oxy-salicydeneiminate〉-4′-butylanine〉 Copper 〈II〉. The results, compared with those obtained for usual organic liquid crystals 〈LC〉 show a translational diffusion coefficient smaller than the LC ones and, in the smectic A phases, a rotational diffusion really different from the L.C. The latter feature is analysed in the terms of a step-by-step rotation and of a partially hindered rotating molecules.
Bartolinob, R., Rustichelli, F., Scaramuzza, N., Versace, C.C., Ghedinic, M., Pagnotta, M.C., et al. (1991). Qens experiments on the copper liquid crystalline coordination compound (DOBBA)2Cu. SOLID STATE COMMUNICATIONS, 80, 587 [10.1016/0038-1098(91)90157-Q].
Qens experiments on the copper liquid crystalline coordination compound (DOBBA)2Cu
RICCI, Maria Antonietta;
1991-01-01
Abstract
The first quasielastic neutron scattering experiments 〈QENS〉 performed on a non discotic metallo-mesogenes, namely the coordination compound 〈DOBBA〉2Cu are reported 〈〈DOBBA〉2Cu〉 is the 〈N-〈4-dodecyl-oxy-salicydeneiminate〉-4′-butylanine〉 Copper 〈II〉. The results, compared with those obtained for usual organic liquid crystals 〈LC〉 show a translational diffusion coefficient smaller than the LC ones and, in the smectic A phases, a rotational diffusion really different from the L.C. The latter feature is analysed in the terms of a step-by-step rotation and of a partially hindered rotating molecules.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
