TS单晶体及其聚合物PTS的介电和动态力学行为

<正> 聚丁二炔类宏观单晶体以其极大的尺寸,完整性和立体规整的共轭主链,为我们提供了一个准一维体系模型化合物。它们的电性能,非线性光学性能及形成聚合LB膜的能力等具有潜在的应用前景,近年来研究工作非常活跃。丁二炔类化合物中最能培养咸大晶体,从而研究得最多的是双(对甲苯磺酸)-2,4-己二炔-1,6-二醇酯(TS)及其聚合物PTS。我们先后测量过它们的热电势率、电导、膨胀系数、介电性能、光声效

DYNAMIC DIELECTRIC AND DYNAMIC MECHANICAL BEHAVIOUR OF TS AND ITS POLYMER PTS

Dynamic dielectric coefficient and dynamic mechanical modulus of bis(p-toluene solfona-te) of 2,4-hexadiyne-1,6-dioI(TS) and its polymers with various degrees of polymerization were measured from 123K to 283K. Anomalies of the dynamic dielectric coefficients e11 of TS and PTS along their molecular stacking direction corresponding to their low temperature phase transitions were observed, from which the phase diagram of TS-PTS system was constructed. But the dynamic mechanical modulus ?1 has not be effected by the phase transition.