Studies of Helical Pitch in Antiferroelectric Compounds and Mixtures

Autor:	Jerzy Dziaduszek, Marzena Tykarska, Zofia Stolarz
Rok vydání:	2004
Předmět:	Materials science business.industry Light reflection Condensed Matter Physics Electronic Optical and Magnetic Materials Dilution Homologous series chemistry.chemical_compound Crystallography Optics chemistry Liquid crystal Phase (matter) Selective reflection Antiferroelectricity business Compound c
Zdroj:	Ferroelectrics. 311:51-57
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150190490511194
Popis:	The changes of the helical pitch in antiferroelectric phase of compound C 3 F 7 COO(CH 2 ) 6 OPhPhCOOPhCOOC*H(CH 3 )C 6 H 13 and homologous C n F 2n+1 COO(CH 2 ) 6 OPhC OOPhPhCOOC*H(CH 3 )C 6 H 13 versus temperature were measured based on selective reflection of the light. The first compound was mixed with achiral compounds, and compounds of second structure were mixed with their racemic mixtures. In all cases the dilution of pure compounds causes the increase of the helical pitch. Compounds having second structure have longer helical pitch than first one. The increase of the fluorinated part of the terminal chain of homologous series causes at first the increase next the decrease of the pitch.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c10b2d072412ae16c99b38ffed5ec09a https://doi.org/10.1080/00150190490511194 Zobrazit plný text záznamu