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. 2021 Feb 17;45(1):71–81. doi: 10.3906/kim-2007-64

Table 2.

The chemical structure, mesophase type, and phase transition temperatures of the BDBB.

graphic file with name turkjchem-45-71-fig_t11.jpg
Compound T (K) (ΔH kJ/mol)
BDBBa Heating: Cr 391.18 [45.82] SmC 432.15b N 467.82 [1.31] Iso
Cooling: Iso 466.32 [-1.75] N 432.15b SmC 364.71 [-44.12] Cr

aTemperatures were expressed in Kelvin unit by adding 273.15 to Celsius degree. Perkin-Elmer DSC-6: enthalpy values were presented in brackets, heating, and cooling scans at a rate of 10 °C min-1. Abbrevations: Cr = crystalline, SmC = tilted smectic phase, N = nematic phase, Iso = isotropic phase.

bDetermined by polarizing microscopy.