In this paper we present the synthesis and the study of the homologous series {Mathematical expression} whith m=3 and n ranging from zero to sixteen. Transition temperatures, enthalpies and entropies have been determined making use of optical methods, differential scanning calorimetry and X-ray diffraction. Smectic and/or nematic phases have been observed for all the homologues with a complex polymorphism in some cases. A comparison with the series m=0, m=1 and m=2, precedently studied, is also reported.
Mesomorphic Behaviour of Some 4-n-Pentanoyl-4'-n-Alkanoyloxy Azobenzenes (PPAPE). A New Series of Liquid-Crystal Compounds / E., Fanelli; G., Poeti; Francescangeli, Oriano; G., Torquati. - In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. D CONDENSED MATTER, ATOMIC, MOLECULAR AND CHEMICAL PHYSICS, BIOPHYSICS. - ISSN 0392-6737. - 10 (11):(1988), pp. 1373-1384. [10.1007/BF02455429]
Mesomorphic Behaviour of Some 4-n-Pentanoyl-4'-n-Alkanoyloxy Azobenzenes (PPAPE). A New Series of Liquid-Crystal Compounds
FRANCESCANGELI, ORIANO;
1988-01-01
Abstract
In this paper we present the synthesis and the study of the homologous series {Mathematical expression} whith m=3 and n ranging from zero to sixteen. Transition temperatures, enthalpies and entropies have been determined making use of optical methods, differential scanning calorimetry and X-ray diffraction. Smectic and/or nematic phases have been observed for all the homologues with a complex polymorphism in some cases. A comparison with the series m=0, m=1 and m=2, precedently studied, is also reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
