The synthesis of novel biphenyl-based bent-core (BC) compounds 3′-{4-[4-((S)-3,7-Dimethyloctyloxy)benzoyloxy]benzoyloxy}-4-{4-[4-(Octyloxy)benzoyloxy]benzoyloxy}biphenyl (DOB) and 3′-{4-[4-((S)-3,7-Dimethyloctyloxy)benzoyloxy]benzoyloxy}-4-{4-[4-(Decyloxy)benzoyloxy]benzoyloxy} biphenyl (DDB) have been carried out. Mesomorphic properties of the novel BC compounds DDB and DOB were investigated using optical polarizing microscope and differential scanning calorimeter. The phase transition temperatures of both mesogens (DDB and DOB) exhibiting B₁ mesophase were determined, the dielectric parameters were studied, and calculations were made by dielectric spectroscopy technique on the cooling temperature range 135.04–62.81 °C and 141.45–64.83 °C, respectively. By calculation of the temperature-dependent real and imaginary parts of the dielectric constant, the change of the dielectric properties in the both LCs mesophase interval gradually have been revealed. Conductivity mechanisms have obtained with the help of frequency exponent values, s in selected temperature regions. The activation energies of (E_a) DDB and DOB at different temperature regions have also been estimated.

新型联苯类弯曲核(BC)化合物3'-{4-[4-(( S )-3,7-二甲基辛氧基)苯甲酰氧基]苯甲酰氧基}-4-{4-[4-(辛氧基)的合成苯甲酰氧基]苯甲酰氧基}联苯( DOB )和3'-{4-[4-(( S )-3,7-二甲基辛氧基)苯甲酰氧基]苯甲酰氧基}-4-{4-[4-(癸氧基)苯甲酰氧基]苯甲酰氧基}联苯( DDB ) 已经进行了。使用光学偏光显微镜和差示扫描量热仪研究了新型 BC 化合物DDB和DOB 的介晶性质。显示 B ₁的两种介晶（DDB和DOB）的相变温度确定了中间相，研究了介电参数，并通过介电光谱技术对冷却温度范围分别为 135.04–62.81 °C 和 141.45–64.83 °C 进行了计算。通过计算介电常数随温度变化的实部和虚部，逐渐揭示了两种液晶中间相区间介电特性的变化。借助频率指数值s在选定的温度范围内获得了电导机制。( E _a ) DDB和DOB在不同温度区域的活化能也已被估计。