Effect of alkyl chain length in the terminal ester group on mesomorphic properties of new chiral lactic acid derivatives

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F16%3A43902463" target="_blank" >RIV/60461373:22310/16:43902463 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/16:00462946
Result on the web
<a href="http://dx.doi.org/10.1080/02678292.2016.1185170" target="_blank" >http://dx.doi.org/10.1080/02678292.2016.1185170</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/02678292.2016.1185170" target="_blank" >10.1080/02678292.2016.1185170</a>

Result language
angličtina
Original language name
Effect of alkyl chain length in the terminal ester group on mesomorphic properties of new chiral lactic acid derivatives
Original language description
Two series of new liquid crystalline lactic acid derivatives with a terminal ester group have been synthesised. The effect of this ester unit and the length of its alkyl chain on the mesomorphic and dielectric properties of the compounds exhibiting a broad temperature range of chiral smectic phases have been studied. We found that the mesomorphic behaviour and phase transition temperatures are strongly affected by the molecular architecture. Depending on the alkyl chain length in the terminal ester unit, the studied materials exhibited paraelectric smectic A*, ferroelectric tilted smectic C* and antiferroelectric smectic C-A* phases over a broad temperature range. The physical properties of the compounds have been studied by optical polarising microscopy, differential scanning calorimetry, electro-optic measurements, small-angle X-ray scattering and dielectric spectroscopy. Furthermore, the homologues with short terminal alkyl chains showed a very small layer shrinkage at the transition from the orthogonal SmA* to the tilted SmC* phase, which is a characteristic feature of 'de Vries-type' behaviour.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JJ - Other materials
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)