The compounds from the fluorinated nF6B (n = 1,2,3,4,5,6,7) homologous series were investigated by means of optical, electrooptical, refractometrical, dielectric, densytometric, X-ray and IR spectroscopy methods. For some compounds being a subject of investigations a computer simulation of molecular properties were done. In our opinion high value of optical tilt Θo angle in comparison with a tilt angle obtained from X-ray measurements can be interpreted in terms of de Vries model of SmA* phases as well as of dimers creation process.
Acknowledgments
This work was supported by the Polish Ministry of Scientific Research and Information Technology in years 2003–2006 (grant No. 0 T00C 006 25).
Notes
l - Calculated Optimum Molecular Length, lm - Calculated Length of Fully Extended Molecule, L1 - Calculated Total Length of Dimer 1, L2 - Calculated Total Length of Dimer 2, μ - Calculated Total Dipole Moment of Single Isolated Molecule, μ1 - Calculated Total Dipole Moment of Virtual Dimer 1, μ2 - Calculated Total Dipole Moment of Virtual Dimer 2, d - Measured by SAXS Layer Spacing of the SmC* Phase at T – TAC = 60°C, dA-Measured by SAXS Layer Spacing of the SmA* Phase at T – TAC = + 2°C, LA - Estimated Average Length of Objects Which Build up the SmA* Phase, L - Estimated Average Length of Objects Which Build up the SmC* Phase at T – TAC = − 60°C, ΘA = acos(dA/LA) - Calculated Tilt Angle in the de Vrise SmA* Phase, Θ = acos (d/L) - Calculated Tilt Angle in the de SmC* Phase at T – TAC = 60°C.