PAa03 キラルスメクティック液晶の^<13>C NMR分光法によるスピン-格子緩和時間測定

抄録

In order to discuss the molecular fluctuation in chiral smectic phases, the temperature dependence of the spin-lattice relaxation time (T_1) was measured using ^<13>C-NMR in MHPOBC and DOBAMBC. In the SmC_A phase of MHPOBC, the relaxation time (T_1) of phenyl group decreased with increasing temperature until it attained a minimum at 95℃, and then increased. At, the temperature of T_1 minimum, the correlation time of the molecular motion, which dominates T_1, could be estimated at about 10^<-9> s.