The Influence of Chirality on the Phase Behaviour of a Fluoro-Substituted Tolan Derivative Exhibiting a Direct TGB to BP Transition

Autor:	Min-Hui Li, Gilles Sigaud, Guido Pitsi, Hu-Tinh Nguyen, Peter Jamée, Jan Thoen
Rok vydání:	2000
Předmět:	Phase transition Crystallography Critical point (thermodynamics) Liquid crystal Chemistry Stereochemistry Transition temperature Enthalpy Calorimetry Enantiomer Condensed Matter Physics Enantiomeric excess
Zdroj:	Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 351:111-118
ISSN:	1058-725X
DOI:	10.1080/10587250008023259
Popis:	We have investigated the phase behaviour as a function of enantiomeric excess of a fluorosubstituted tolan derivative, FH/FH/HH18BTMHC, using high-resolution adiabatic scanning calorimetry (ASC). This substance exhibits a direct TGB to BP transition. Mixing (R) and (S) enantiomers permits us to vary the chirality of these mixtures without much effect on other parameters. Changes in transition temperature are studied, as well as the enthalpy changes and latent heats at the various transitions which can be measured directly using ASC. A supercritical BPIII-I transition evolving towards a critical point is observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cc9e61e61bb930d73a02278d0203d792 https://doi.org/10.1080/10587250008023259 Zobrazit plný text záznamu