S. H. J. Idziak, P. A. Heiney, J. P. McCauley, Jr., P. Carroll, and A. B. Smith, III, Mol. Cryst. Liq. Cryst. Lett. 237, 271-277 (1993).
We have used x-ray diffraction and differential scanning calorimetry to establish the phase diagram, liquid crystalline structure, and crystalline structure of a series of hexa-n-alkylthiotriphenylenes. At least nine crystal phases are observed. The helical pitch seen in the helical phase is incommensurate with the molecular spacing when measured in single-orientation strands, while commensurate in powder samples.
GO TO PAUL HEINEY'S PERSONAL WEB PAGE