Structure of the Mesophases Formed by a Perfluoroalkyl-Biphenyl Compound. Amphiphilic and Steric EffectsReport as inadecuate




Structure of the Mesophases Formed by a Perfluoroalkyl-Biphenyl Compound. Amphiphilic and Steric Effects - Download this document for free, or read online. Document in PDF available to download.



Abstract : We describe the synthesis and mesomorphic behaviour of 4-1H,1H-perfluorooctyloxy- 4-methoxy biphenyl. Two mesophases of smectic E and smectic A types were observed. X-ray diffraction study of the smectic E phase indicates a herringbone arrangement of the biphenyl cores, the perfluoroalkyl chains being in a molten state. The SE ↦SA transition is related to the melting of the biphenyl sublattice. In both phases, the flexibility of perfluoroalkyl chains permits the area matching between the two segregated sublayers.





Author: Sandrine Pensec François-Genès Tournilhac Pierre Bassoul

Source: https://hal.archives-ouvertes.fr/



DOWNLOAD PDF




Related documents