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Paper | Regular issue | Vol 36, No. 6, 1993, pp.1225-1237
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6126
An Investigation on the Use of Furan Derivatives to Obtain Thermotropic Compounds

Giovanna Costa, Alessandro Gandini,* Sergio Morinelli, and Barbara Valenti

*Materiaux Polymères, Ecole Française de Papeterie et des Industries Graphiques (INPG), BP 65 - 38402 Saint Martin d’Hères, France

Abstract

A systematic investigation of the mesogenic potential of furan derivatives in terms of geometrical and polar structural characteristics has been carried out. Symmetrical compounds obtained from furancarboxylic acids and hydroquinone or 4,4’-dihydroxybiphenyl, and from 2,5-furandicarboxylic acid and several paraalkoxyphenols were prepared, in order to obtain esters bearing furan rings either in the terminal or in the central position. When the furan ring is the core of the molecule geometric features play a predominant role on the thermal behavior and the mesophase formation is inhibited. When the furan heterocycles are appended to an aromatic core the detrimental role is less manifest, but still present, as shown by comparing the thermal properties of furan derivatives with those of the corresponding fully aromatic compounds.