【摘要】 从室温至３８０Ｋ测量了热致液晶４己氧基苯甲酸４氰基苯酯（ＣＰＨＯＢ）的氢核磁共振谱．其固态至向列相的转变温度Ｔｓｎ＝３４７Ｋ，向列相至各向同性液体的转变温度Ｔｎｉ＝３５９Ｋ．得到了液晶态有序参数的温度关系．讨论了氢核磁共振的自旋晶格弛豫机制．更多还原

【Abstract】 Abstract The proton magnetic resonance spectra of 4 cyanophenyl 4′ hexyloxy benzoate (CPHOB) were measured from room temperature to 380K. It was found that the transition temperature from solid to nematic phase was T sn =347K, and the transition temperature from nematic phase to isotropic liquid T ni =359K. The temperature dependence of its order parameter was evaluated. Its mechanism of proton spin lattice relaxation was discussed.更多还原