LrgpV1, Istex, Corpus, bibRecord, 001236

Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study

Identifieur interne : 001236 ( Istex/Corpus ); précédent : 001235; suivant : 001237

Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study

Auteurs : P. Judeinstein ; P. Berdagué ; J. P. Bayle ; Ewa Rogalska ; Marek Rogalski ; D. Petit-Jean ; M. H. Guermouche

Source :

Journal of Chromatography A [ 0021-9673 ] ; 1999.

RBID : ISTEX:33EDD4A9108394033C81853E3E593BE733EB88E1

English descriptors

Abstract

Abstract: Synthesis, analytical performances, thermodynamic and surface properties of two new liquid crystals substituted with poly(ethylene oxide) chains are described. The first of them is N,N′-diphenyl-[4-{2,3,4-tri[2-(2-metoxyethoxy)ethoxy]benzylidene}imine]piperidine (LC1) and the second is 2-hydroxy-3-methyl-4-{4-[2-(2-butoxyethoxy)ethoxy]} 4′-{4-[2-(2-butoxyethoxy)ethoxy]styryl}azobenzene (LC2). The nematic ranges of the two liquid crystals, determined by differential scanning calorimetry do not interfere. The analytical and thermodynamic studies of LC1and LC2 in the solid, nematic and liquid state were done using a series of appropriate solutes. Comparison of the analytical performances shows a better efficiency in the nematic state.

Url:

https://api.istex.fr/document/33EDD4A9108394033C81853E3E593BE733EB88E1/fulltext/pdf

DOI: 10.1016/S0021-9673(99)00755-4

Links to Exploration step

ISTEX:33EDD4A9108394033C81853E3E593BE733EB88E1

Le document en format XML

<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study</title>
<author><name sortKey="Judeinstein, P" sort="Judeinstein, P" uniqKey="Judeinstein P" first="P." last="Judeinstein">P. Judeinstein</name>
<affiliation><mods:affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Berdague, P" sort="Berdague, P" uniqKey="Berdague P" first="P." last="Berdagué">P. Berdagué</name>
<affiliation><mods:affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Bayle, J P" sort="Bayle, J P" uniqKey="Bayle J" first="J. P." last="Bayle">J. P. Bayle</name>
<affiliation><mods:affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Rogalska, Ewa" sort="Rogalska, Ewa" uniqKey="Rogalska E" first="Ewa" last="Rogalska">Ewa Rogalska</name>
<affiliation><mods:affiliation>Laboratoire de Physico-Chimie des Colloı̈des, UMR 7565 CNRS, Université Henri Poincaré Nancy I, B.P. 239, 54506 Vandoeuvre-lès-Nancy, Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Rogalski, Marek" sort="Rogalski, Marek" uniqKey="Rogalski M" first="Marek" last="Rogalski">Marek Rogalski</name>
<affiliation><mods:affiliation>Laboratoire de Thermodynamique et d’Analyse Chimique, Université de Metz, 57045 Metz Cédex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Petit Jean, D" sort="Petit Jean, D" uniqKey="Petit Jean D" first="D." last="Petit-Jean">D. Petit-Jean</name>
<affiliation><mods:affiliation>Laboratoire de thermodynamique des séparations, ENSIC, 1 Rue Grandville, B.P. 451, 54001 Nancy Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Guermouche, M H" sort="Guermouche, M H" uniqKey="Guermouche M" first="M. H." last="Guermouche">M. H. Guermouche</name>
<affiliation><mods:affiliation>Laboratoire de Chromatographie, Institut de Chimie, CRAPC, USTHB, B.P. 32, El-Alia, Alger, Algeria</mods:affiliation>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">ISTEX</idno>
<idno type="RBID">ISTEX:33EDD4A9108394033C81853E3E593BE733EB88E1</idno>
<date when="1999" year="1999">1999</date>
<idno type="doi">10.1016/S0021-9673(99)00755-4</idno>
<idno type="url">https://api.istex.fr/document/33EDD4A9108394033C81853E3E593BE733EB88E1/fulltext/pdf</idno>
<idno type="wicri:Area/Istex/Corpus">001236</idno>
<idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001236</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title level="a">Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study</title>
<author><name sortKey="Judeinstein, P" sort="Judeinstein, P" uniqKey="Judeinstein P" first="P." last="Judeinstein">P. Judeinstein</name>
<affiliation><mods:affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Berdague, P" sort="Berdague, P" uniqKey="Berdague P" first="P." last="Berdagué">P. Berdagué</name>
<affiliation><mods:affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Bayle, J P" sort="Bayle, J P" uniqKey="Bayle J" first="J. P." last="Bayle">J. P. Bayle</name>
<affiliation><mods:affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Rogalska, Ewa" sort="Rogalska, Ewa" uniqKey="Rogalska E" first="Ewa" last="Rogalska">Ewa Rogalska</name>
<affiliation><mods:affiliation>Laboratoire de Physico-Chimie des Colloı̈des, UMR 7565 CNRS, Université Henri Poincaré Nancy I, B.P. 239, 54506 Vandoeuvre-lès-Nancy, Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Rogalski, Marek" sort="Rogalski, Marek" uniqKey="Rogalski M" first="Marek" last="Rogalski">Marek Rogalski</name>
<affiliation><mods:affiliation>Laboratoire de Thermodynamique et d’Analyse Chimique, Université de Metz, 57045 Metz Cédex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Petit Jean, D" sort="Petit Jean, D" uniqKey="Petit Jean D" first="D." last="Petit-Jean">D. Petit-Jean</name>
<affiliation><mods:affiliation>Laboratoire de thermodynamique des séparations, ENSIC, 1 Rue Grandville, B.P. 451, 54001 Nancy Cedex, France</mods:affiliation>
</affiliation>
</author>
<author><name sortKey="Guermouche, M H" sort="Guermouche, M H" uniqKey="Guermouche M" first="M. H." last="Guermouche">M. H. Guermouche</name>
<affiliation><mods:affiliation>Laboratoire de Chromatographie, Institut de Chimie, CRAPC, USTHB, B.P. 32, El-Alia, Alger, Algeria</mods:affiliation>
</affiliation>
</author>
</analytic>
<monogr></monogr>
<series><title level="j">Journal of Chromatography A</title>
<title level="j" type="abbrev">CHROMA</title>
<idno type="ISSN">0021-9673</idno>
<imprint><publisher>ELSEVIER</publisher>
<date type="published" when="1999">1999</date>
<biblScope unit="volume">859</biblScope>
<biblScope unit="issue">1</biblScope>
<biblScope unit="page" from="59">59</biblScope>
<biblScope unit="page" to="67">67</biblScope>
</imprint>
<idno type="ISSN">0021-9673</idno>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><idno type="ISSN">0021-9673</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amphiphilic character</term>
<term>Analytical performances</term>
<term>Appropriate solutes</term>
<term>Aromatic ring</term>
<term>Chem</term>
<term>Chromatogr</term>
<term>Condensation enthalpy</term>
<term>Constant transition points</term>
<term>Crystal range</term>
<term>Differential scanning calorimetry</term>
<term>Elsevier science</term>
<term>Enthalpy</term>
<term>Equiv</term>
<term>Ethyl acetate</term>
<term>Guermouche</term>
<term>High resolut</term>
<term>Isomer</term>
<term>Judeinstein</term>
<term>Liquid crystals</term>
<term>Liquid state</term>
<term>Molar enthalpy</term>
<term>Nematic</term>
<term>Nematic phase</term>
<term>Nematic state</term>
<term>Neutral conditions</term>
<term>Nitro group</term>
<term>Relative retention times</term>
<term>Solid state</term>
<term>Solute</term>
<term>Stationary phase</term>
<term>Stationary phases</term>
<term>Temperature range</term>
<term>Thermodynamic</term>
<term>Thermodynamic properties</term>
<term>Thermodynamic studies</term>
<term>Trans isomers</term>
<term>Transition temperatures</term>
<term>Tridecane isomers</term>
<term>Vertical line</term>
<term>Volatile aroma compounds</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en"><term>Amphiphilic character</term>
<term>Analytical performances</term>
<term>Appropriate solutes</term>
<term>Aromatic ring</term>
<term>Chem</term>
<term>Chromatogr</term>
<term>Condensation enthalpy</term>
<term>Constant transition points</term>
<term>Crystal range</term>
<term>Differential scanning calorimetry</term>
<term>Elsevier science</term>
<term>Enthalpy</term>
<term>Equiv</term>
<term>Ethyl acetate</term>
<term>Guermouche</term>
<term>High resolut</term>
<term>Isomer</term>
<term>Judeinstein</term>
<term>Liquid crystals</term>
<term>Liquid state</term>
<term>Molar enthalpy</term>
<term>Nematic</term>
<term>Nematic phase</term>
<term>Nematic state</term>
<term>Neutral conditions</term>
<term>Nitro group</term>
<term>Relative retention times</term>
<term>Solid state</term>
<term>Solute</term>
<term>Stationary phase</term>
<term>Stationary phases</term>
<term>Temperature range</term>
<term>Thermodynamic</term>
<term>Thermodynamic properties</term>
<term>Thermodynamic studies</term>
<term>Trans isomers</term>
<term>Transition temperatures</term>
<term>Tridecane isomers</term>
<term>Vertical line</term>
<term>Volatile aroma compounds</term>
</keywords>
</textClass>
<langUsage><language ident="en">en</language>
</langUsage>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Abstract: Synthesis, analytical performances, thermodynamic and surface properties of two new liquid crystals substituted with poly(ethylene oxide) chains are described. The first of them is N,N′-diphenyl-[4-{2,3,4-tri[2-(2-metoxyethoxy)ethoxy]benzylidene}imine]piperidine (LC1) and the second is 2-hydroxy-3-methyl-4-{4-[2-(2-butoxyethoxy)ethoxy]} 4′-{4-[2-(2-butoxyethoxy)ethoxy]styryl}azobenzene (LC2). The nematic ranges of the two liquid crystals, determined by differential scanning calorimetry do not interfere. The analytical and thermodynamic studies of LC1and LC2 in the solid, nematic and liquid state were done using a series of appropriate solutes. Comparison of the analytical performances shows a better efficiency in the nematic state.</div>
</front>
</TEI>
<istex><corpusName>elsevier</corpusName>
<keywords><teeft><json:string>nematic</json:string>
<json:string>chromatogr</json:string>
<json:string>liquid crystals</json:string>
<json:string>isomer</json:string>
<json:string>solute</json:string>
<json:string>chem</json:string>
<json:string>guermouche</json:string>
<json:string>judeinstein</json:string>
<json:string>nematic state</json:string>
<json:string>equiv</json:string>
<json:string>analytical performances</json:string>
<json:string>liquid state</json:string>
<json:string>condensation enthalpy</json:string>
<json:string>volatile aroma compounds</json:string>
<json:string>enthalpy</json:string>
<json:string>stationary phases</json:string>
<json:string>high resolut</json:string>
<json:string>temperature range</json:string>
<json:string>molar enthalpy</json:string>
<json:string>trans isomers</json:string>
<json:string>stationary phase</json:string>
<json:string>amphiphilic character</json:string>
<json:string>thermodynamic</json:string>
<json:string>tridecane isomers</json:string>
<json:string>neutral conditions</json:string>
<json:string>constant transition points</json:string>
<json:string>transition temperatures</json:string>
<json:string>nematic phase</json:string>
<json:string>relative retention times</json:string>
<json:string>crystal range</json:string>
<json:string>thermodynamic properties</json:string>
<json:string>ethyl acetate</json:string>
<json:string>aromatic ring</json:string>
<json:string>elsevier science</json:string>
<json:string>vertical line</json:string>
<json:string>solid state</json:string>
<json:string>appropriate solutes</json:string>
<json:string>thermodynamic studies</json:string>
<json:string>differential scanning calorimetry</json:string>
<json:string>nitro group</json:string>
</teeft>
</keywords>
<author><json:item><name>P. Judeinstein</name>
<affiliations><json:string>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</json:string>
</affiliations>
</json:item>
<json:item><name>P. Berdagué</name>
<affiliations><json:string>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</json:string>
</affiliations>
</json:item>
<json:item><name>J.P. Bayle</name>
<affiliations><json:string>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</json:string>
</affiliations>
</json:item>
<json:item><name>Ewa Rogalska</name>
<affiliations><json:string>Laboratoire de Physico-Chimie des Colloı̈des, UMR 7565 CNRS, Université Henri Poincaré Nancy I, B.P. 239, 54506 Vandoeuvre-lès-Nancy, Cedex, France</json:string>
</affiliations>
</json:item>
<json:item><name>Marek Rogalski</name>
<affiliations><json:string>Laboratoire de Thermodynamique et d’Analyse Chimique, Université de Metz, 57045 Metz Cédex, France</json:string>
</affiliations>
</json:item>
<json:item><name>D. Petit-Jean</name>
<affiliations><json:string>Laboratoire de thermodynamique des séparations, ENSIC, 1 Rue Grandville, B.P. 451, 54001 Nancy Cedex, France</json:string>
</affiliations>
</json:item>
<json:item><name>M.H. Guermouche</name>
<affiliations><json:string>Laboratoire de Chromatographie, Institut de Chimie, CRAPC, USTHB, B.P. 32, El-Alia, Alger, Algeria</json:string>
</affiliations>
</json:item>
</author>
<subject><json:item><lang><json:string>eng</json:string>
</lang>
<value>Thermodynamic parameters</value>
</json:item>
<json:item><lang><json:string>eng</json:string>
</lang>
<value>Stationary phases, GC</value>
</json:item>
<json:item><lang><json:string>eng</json:string>
</lang>
<value>Liquid crystals</value>
</json:item>
</subject>
<language><json:string>eng</json:string>
</language>
<originalGenre><json:string>Full-length article</json:string>
</originalGenre>
<abstract>Synthesis, analytical performances, thermodynamic and surface properties of two new liquid crystals substituted with poly(ethylene oxide) chains are described. The first of them is N,N′-diphenyl-[4-{2,3,4-tri[2-(2-metoxyethoxy)ethoxy]benzylidene}imine]piperidine (LC1) and the second is 2-hydroxy-3-methyl-4-{4-[2-(2-butoxyethoxy)ethoxy]} 4′-{4-[2-(2-butoxyethoxy)ethoxy]styryl}azobenzene (LC2). The nematic ranges of the two liquid crystals, determined by differential scanning calorimetry do not interfere. The analytical and thermodynamic studies of LC1and LC2 in the solid, nematic and liquid state were done using a series of appropriate solutes. Comparison of the analytical performances shows a better efficiency in the nematic state.</abstract>
<qualityIndicators><score>3.816</score>
<pdfVersion>1.2</pdfVersion>
<pdfPageSize>546 x 744 pts</pdfPageSize>
<refBibsNative>true</refBibsNative>
<keywordCount>3</keywordCount>
<abstractCharCount>741</abstractCharCount>
<pdfWordCount>2796</pdfWordCount>
<pdfCharCount>19836</pdfCharCount>
<pdfPageCount>9</pdfPageCount>
<abstractWordCount>85</abstractWordCount>
</qualityIndicators>
<title>Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study</title>
<pii><json:string>S0021-9673(99)00755-4</json:string>
</pii>
<genre><json:string>research-article</json:string>
</genre>
<host><title>Journal of Chromatography A</title>
<language><json:string>unknown</json:string>
</language>
<publicationDate>1999</publicationDate>
<issn><json:string>0021-9673</json:string>
</issn>
<pii><json:string>S0021-9673(00)X0227-0</json:string>
</pii>
<volume>859</volume>
<issue>1</issue>
<pages><first>59</first>
<last>67</last>
</pages>
<genre><json:string>journal</json:string>
</genre>
</host>
<categories><wos><json:string>science</json:string>
<json:string>chemistry, analytical</json:string>
<json:string>biochemical research methods</json:string>
</wos>
<scienceMetrix><json:string>natural sciences</json:string>
<json:string>chemistry</json:string>
<json:string>analytical chemistry</json:string>
</scienceMetrix>
<inist><json:string>sciences appliquees, technologies et medecines</json:string>
<json:string>sciences exactes et technologie</json:string>
<json:string>sciences appliquees</json:string>
<json:string>pollution</json:string>
</inist>
</categories>
<publicationDate>1999</publicationDate>
<copyrightDate>1999</copyrightDate>
<doi><json:string>10.1016/S0021-9673(99)00755-4</json:string>
</doi>
<id>33EDD4A9108394033C81853E3E593BE733EB88E1</id>
<score>1</score>
<fulltext><json:item><extension>pdf</extension>
<original>true</original>
<mimetype>application/pdf</mimetype>
<uri>https://api.istex.fr/document/33EDD4A9108394033C81853E3E593BE733EB88E1/fulltext/pdf</uri>
</json:item>
<json:item><extension>zip</extension>
<original>false</original>
<mimetype>application/zip</mimetype>
<uri>https://api.istex.fr/document/33EDD4A9108394033C81853E3E593BE733EB88E1/fulltext/zip</uri>
</json:item>
<istex:fulltextTEI uri="https://api.istex.fr/document/33EDD4A9108394033C81853E3E593BE733EB88E1/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a">Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study</title>
</titleStmt>
<publicationStmt><authority>ISTEX</authority>
<publisher>ELSEVIER</publisher>
<availability><p>©1999 Elsevier Science B.V.</p>
</availability>
<date>1999</date>
</publicationStmt>
<notesStmt><note type="content">Fig. 1: Synthesis of the LC1 (a) and LC2 (b) liquid crystals. (a) NMR: (a) 8.92 ppm (2H, s); (b) 7.87 ppm (2H, d); (c) 6.75 ppm (2H, d); (d) 7.29 ppm (4H, d); (e) 7.02 ppm (4H, d); (f) 4.41 ppm (2H, m); (g+h) 4.22 ppm (4H, m); (i) 3.5 ppm and 2.2 ppm (8H, m). (b) NMR: (a) 6.92 ppm, (2H, d); (b) 7.47 ppm, (2H, d), (c) 7.15 ppm, (1H, d); (d) 7.0 ppm, (1H, d); (e) 7.62 ppm, (2H, d), (f) 7.85 ppm, (2H, d), (g) 7.72 ppm, (1H, d); (h) 6.62 ppm, (1H, d); (i) 4.17 ppm (2H, t); (j) 4.27 ppm (2H, t), (k) 2.22ppm (3H, s); (l) 13.8 ppm (1H, s).</note>
<note type="content">Fig. 2: Variation of ln Vg with the reciprocal absolute temperature. (a) LC1, (b) LC2.</note>
<note type="content">Fig. 3: Chromatograms of the volatile aroma compounds; LC1 is in the nematic state (a). The vertical line appearing in (b) corresponds to LC2 solid–nematic transition. Experimental conditions and compound numbers are given in Table 3.</note>
<note type="content">Table 1: Transition temperatures of LC1 and LC2 obtained with DSC and GC</note>
<note type="content">Table 2: Plates numbers of LC1 and LC2 in the anisotropic, nematic and isotropic state</note>
<note type="content">Table 3: Relative retention times r=(tr2/tr1) of the tested solutes</note>
<note type="content">Table 4: Thermodynamical values of the compounds tested on LC1 and LC2</note>
</notesStmt>
<sourceDesc><biblStruct type="inbook"><analytic><title level="a">Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study</title>
<author xml:id="author-0000"><persName><forename type="first">P.</forename>
<surname>Judeinstein</surname>
</persName>
<affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</affiliation>
</author>
<author xml:id="author-0001"><persName><forename type="first">P.</forename>
<surname>Berdagué</surname>
</persName>
<affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</affiliation>
</author>
<author xml:id="author-0002"><persName><forename type="first">J.P.</forename>
<surname>Bayle</surname>
</persName>
<affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</affiliation>
</author>
<author xml:id="author-0003"><persName><forename type="first">Ewa</forename>
<surname>Rogalska</surname>
</persName>
<affiliation>Laboratoire de Physico-Chimie des Colloı̈des, UMR 7565 CNRS, Université Henri Poincaré Nancy I, B.P. 239, 54506 Vandoeuvre-lès-Nancy, Cedex, France</affiliation>
</author>
<author xml:id="author-0004"><persName><forename type="first">Marek</forename>
<surname>Rogalski</surname>
</persName>
<affiliation>Laboratoire de Thermodynamique et d’Analyse Chimique, Université de Metz, 57045 Metz Cédex, France</affiliation>
</author>
<author xml:id="author-0005"><persName><forename type="first">D.</forename>
<surname>Petit-Jean</surname>
</persName>
<affiliation>Laboratoire de thermodynamique des séparations, ENSIC, 1 Rue Grandville, B.P. 451, 54001 Nancy Cedex, France</affiliation>
</author>
<author xml:id="author-0006"><persName><forename type="first">M.H.</forename>
<surname>Guermouche</surname>
</persName>
<note type="correspondence"><p>Corresponding author</p>
</note>
<affiliation>Laboratoire de Chromatographie, Institut de Chimie, CRAPC, USTHB, B.P. 32, El-Alia, Alger, Algeria</affiliation>
</author>
<idno type="istex">33EDD4A9108394033C81853E3E593BE733EB88E1</idno>
<idno type="DOI">10.1016/S0021-9673(99)00755-4</idno>
<idno type="PII">S0021-9673(99)00755-4</idno>
</analytic>
<monogr><title level="j">Journal of Chromatography A</title>
<title level="j" type="abbrev">CHROMA</title>
<idno type="pISSN">0021-9673</idno>
<idno type="PII">S0021-9673(00)X0227-0</idno>
<imprint><publisher>ELSEVIER</publisher>
<date type="published" when="1999"></date>
<biblScope unit="volume">859</biblScope>
<biblScope unit="issue">1</biblScope>
<biblScope unit="page" from="59">59</biblScope>
<biblScope unit="page" to="67">67</biblScope>
</imprint>
</monogr>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><creation><date>1999</date>
</creation>
<langUsage><language ident="en">en</language>
</langUsage>
<abstract xml:lang="en"><p>Synthesis, analytical performances, thermodynamic and surface properties of two new liquid crystals substituted with poly(ethylene oxide) chains are described. The first of them is N,N′-diphenyl-[4-{2,3,4-tri[2-(2-metoxyethoxy)ethoxy]benzylidene}imine]piperidine (LC1) and the second is 2-hydroxy-3-methyl-4-{4-[2-(2-butoxyethoxy)ethoxy]} 4′-{4-[2-(2-butoxyethoxy)ethoxy]styryl}azobenzene (LC2). The nematic ranges of the two liquid crystals, determined by differential scanning calorimetry do not interfere. The analytical and thermodynamic studies of LC1and LC2 in the solid, nematic and liquid state were done using a series of appropriate solutes. Comparison of the analytical performances shows a better efficiency in the nematic state.</p>
</abstract>
<textClass><keywords scheme="keyword"><list><head>Keywords</head>
<item><term>Thermodynamic parameters</term>
</item>
<item><term>Stationary phases, GC</term>
</item>
<item><term>Liquid crystals</term>
</item>
</list>
</keywords>
</textClass>
</profileDesc>
<revisionDesc><change when="1999-06-21">Modified</change>
<change when="1999">Published</change>
</revisionDesc>
</teiHeader>
</istex:fulltextTEI>
<json:item><extension>txt</extension>
<original>false</original>
<mimetype>text/plain</mimetype>
<uri>https://api.istex.fr/document/33EDD4A9108394033C81853E3E593BE733EB88E1/fulltext/txt</uri>
</json:item>
</fulltext>
<metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: ce:floats; body; tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration>
<istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"><istex:entity SYSTEM="gr1" NDATA="IMAGE" name="gr1"></istex:entity>
<istex:entity SYSTEM="gr2" NDATA="IMAGE" name="gr2"></istex:entity>
<istex:entity SYSTEM="gr3" NDATA="IMAGE" name="gr3"></istex:entity>
</istex:docType>
<istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>CHROMA</jid>
<aid>31122</aid>
<ce:pii>S0021-9673(99)00755-4</ce:pii>
<ce:doi>10.1016/S0021-9673(99)00755-4</ce:doi>
<ce:copyright type="full-transfer" year="1999">Elsevier Science B.V.</ce:copyright>
</item-info>
<head><ce:title>Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study</ce:title>
<ce:author-group><ce:author><ce:given-name>P.</ce:given-name>
<ce:surname>Judeinstein</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>P.</ce:given-name>
<ce:surname>Berdagué</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>J.P.</ce:given-name>
<ce:surname>Bayle</ce:surname>
<ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>Ewa</ce:given-name>
<ce:surname>Rogalska</ce:surname>
<ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>Marek</ce:given-name>
<ce:surname>Rogalski</ce:surname>
<ce:cross-ref refid="AFF3"><ce:sup>c</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>D.</ce:given-name>
<ce:surname>Petit-Jean</ce:surname>
<ce:cross-ref refid="AFF4"><ce:sup>d</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>M.H.</ce:given-name>
<ce:surname>Guermouche</ce:surname>
<ce:cross-ref refid="AFF5"><ce:sup>e</ce:sup>
</ce:cross-ref>
<ce:cross-ref refid="CORR1">*</ce:cross-ref>
</ce:author>
<ce:affiliation id="AFF1"><ce:label>a</ce:label>
<ce:textfn>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF2"><ce:label>b</ce:label>
<ce:textfn>Laboratoire de Physico-Chimie des Colloı̈des, UMR 7565 CNRS, Université Henri Poincaré Nancy I, B.P. 239, 54506 Vandoeuvre-lès-Nancy, Cedex, France</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF3"><ce:label>c</ce:label>
<ce:textfn>Laboratoire de Thermodynamique et d’Analyse Chimique, Université de Metz, 57045 Metz Cédex, France</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF4"><ce:label>d</ce:label>
<ce:textfn>Laboratoire de thermodynamique des séparations, ENSIC, 1 Rue Grandville, B.P. 451, 54001 Nancy Cedex, France</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF5"><ce:label>e</ce:label>
<ce:textfn>Laboratoire de Chromatographie, Institut de Chimie, CRAPC, USTHB, B.P. 32, El-Alia, Alger, Algeria</ce:textfn>
</ce:affiliation>
<ce:correspondence id="CORR1"><ce:label>*</ce:label>
<ce:text>Corresponding author</ce:text>
</ce:correspondence>
</ce:author-group>
<ce:date-received day="8" month="1" year="1999"></ce:date-received>
<ce:date-revised day="21" month="6" year="1999"></ce:date-revised>
<ce:date-accepted day="21" month="6" year="1999"></ce:date-accepted>
<ce:abstract><ce:section-title>Abstract</ce:section-title>
<ce:abstract-sec><ce:simple-para>Synthesis, analytical performances, thermodynamic and surface properties of two new liquid crystals substituted with poly(ethylene oxide) chains are described. The first of them is <ce:italic>N,N</ce:italic>
′-diphenyl-[4-{2,3,4-tri[2-(2-metoxyethoxy)ethoxy]benzylidene}imine]piperidine (<ce:bold>LC<ce:inf>1</ce:inf>
</ce:bold>
) and the second is 2-hydroxy-3-methyl-4-{4-[2-(2-butoxyethoxy)ethoxy]} 4′-{4-[2-(2-butoxyethoxy)ethoxy]styryl}azobenzene (<ce:bold>LC<ce:inf>2</ce:inf>
</ce:bold>
). The nematic ranges of the two liquid crystals, determined by differential scanning calorimetry do not interfere. The analytical and thermodynamic studies of <ce:bold>LC<ce:inf>1</ce:inf>
</ce:bold>
and <ce:bold>LC<ce:inf>2</ce:inf>
</ce:bold>
 in the solid, nematic and liquid state were done using a series of appropriate solutes. Comparison of the analytical performances shows a better efficiency in the nematic state.</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
<ce:keywords><ce:section-title>Keywords</ce:section-title>
<ce:keyword><ce:text>Thermodynamic parameters</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Stationary phases, GC</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Liquid crystals</ce:text>
</ce:keyword>
</ce:keywords>
</head>
</converted-article>
</istex:document>
</istex:metadataXml>
<mods version="3.6"><titleInfo><title>Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study</title>
</titleInfo>
<titleInfo type="alternative" contentType="CDATA"><title>Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study</title>
</titleInfo>
<name type="personal"><namePart type="given">P.</namePart>
<namePart type="family">Judeinstein</namePart>
<affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">P.</namePart>
<namePart type="family">Berdagué</namePart>
<affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">J.P.</namePart>
<namePart type="family">Bayle</namePart>
<affiliation>Laboratoire de Chimie Structurale Organique, ICMO, Bt 410, 91405 Orsay-Cedex, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Ewa</namePart>
<namePart type="family">Rogalska</namePart>
<affiliation>Laboratoire de Physico-Chimie des Colloı̈des, UMR 7565 CNRS, Université Henri Poincaré Nancy I, B.P. 239, 54506 Vandoeuvre-lès-Nancy, Cedex, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">Marek</namePart>
<namePart type="family">Rogalski</namePart>
<affiliation>Laboratoire de Thermodynamique et d’Analyse Chimique, Université de Metz, 57045 Metz Cédex, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">D.</namePart>
<namePart type="family">Petit-Jean</namePart>
<affiliation>Laboratoire de thermodynamique des séparations, ENSIC, 1 Rue Grandville, B.P. 451, 54001 Nancy Cedex, France</affiliation>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<name type="personal"><namePart type="given">M.H.</namePart>
<namePart type="family">Guermouche</namePart>
<affiliation>Laboratoire de Chromatographie, Institut de Chimie, CRAPC, USTHB, B.P. 32, El-Alia, Alger, Algeria</affiliation>
<description>Corresponding author</description>
<role><roleTerm type="text">author</roleTerm>
</role>
</name>
<typeOfResource>text</typeOfResource>
<genre type="research-article" displayLabel="Full-length article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre>
<originInfo><publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">1999</dateIssued>
<dateModified encoding="w3cdtf">1999-06-21</dateModified>
<copyrightDate encoding="w3cdtf">1999</copyrightDate>
</originInfo>
<language><languageTerm type="code" authority="iso639-2b">eng</languageTerm>
<languageTerm type="code" authority="rfc3066">en</languageTerm>
</language>
<abstract lang="en">Abstract: Synthesis, analytical performances, thermodynamic and surface properties of two new liquid crystals substituted with poly(ethylene oxide) chains are described. The first of them is N,N′-diphenyl-[4-{2,3,4-tri[2-(2-metoxyethoxy)ethoxy]benzylidene}imine]piperidine (LC1) and the second is 2-hydroxy-3-methyl-4-{4-[2-(2-butoxyethoxy)ethoxy]} 4′-{4-[2-(2-butoxyethoxy)ethoxy]styryl}azobenzene (LC2). The nematic ranges of the two liquid crystals, determined by differential scanning calorimetry do not interfere. The analytical and thermodynamic studies of LC1and LC2 in the solid, nematic and liquid state were done using a series of appropriate solutes. Comparison of the analytical performances shows a better efficiency in the nematic state.</abstract>
<note type="content">Fig. 1: Synthesis of the LC1 (a) and LC2 (b) liquid crystals. (a) NMR: (a) 8.92 ppm (2H, s); (b) 7.87 ppm (2H, d); (c) 6.75 ppm (2H, d); (d) 7.29 ppm (4H, d); (e) 7.02 ppm (4H, d); (f) 4.41 ppm (2H, m); (g+h) 4.22 ppm (4H, m); (i) 3.5 ppm and 2.2 ppm (8H, m). (b) NMR: (a) 6.92 ppm, (2H, d); (b) 7.47 ppm, (2H, d), (c) 7.15 ppm, (1H, d); (d) 7.0 ppm, (1H, d); (e) 7.62 ppm, (2H, d), (f) 7.85 ppm, (2H, d), (g) 7.72 ppm, (1H, d); (h) 6.62 ppm, (1H, d); (i) 4.17 ppm (2H, t); (j) 4.27 ppm (2H, t), (k) 2.22ppm (3H, s); (l) 13.8 ppm (1H, s).</note>
<note type="content">Fig. 2: Variation of ln Vg with the reciprocal absolute temperature. (a) LC1, (b) LC2.</note>
<note type="content">Fig. 3: Chromatograms of the volatile aroma compounds; LC1 is in the nematic state (a). The vertical line appearing in (b) corresponds to LC2 solid–nematic transition. Experimental conditions and compound numbers are given in Table 3.</note>
<note type="content">Table 1: Transition temperatures of LC1 and LC2 obtained with DSC and GC</note>
<note type="content">Table 2: Plates numbers of LC1 and LC2 in the anisotropic, nematic and isotropic state</note>
<note type="content">Table 3: Relative retention times r=(tr2/tr1) of the tested solutes</note>
<note type="content">Table 4: Thermodynamical values of the compounds tested on LC1 and LC2</note>
<subject><genre>Keywords</genre>
<topic>Thermodynamic parameters</topic>
<topic>Stationary phases, GC</topic>
<topic>Liquid crystals</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Journal of Chromatography A</title>
</titleInfo>
<titleInfo type="abbreviated"><title>CHROMA</title>
</titleInfo>
<genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre>
<originInfo><publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">19991022</dateIssued>
</originInfo>
<identifier type="ISSN">0021-9673</identifier>
<identifier type="PII">S0021-9673(00)X0227-0</identifier>
<part><date>19991022</date>
<detail type="volume"><number>859</number>
<caption>vol.</caption>
</detail>
<detail type="issue"><number>1</number>
<caption>no.</caption>
</detail>
<extent unit="issue-pages"><start>1</start>
<end>120</end>
</extent>
<extent unit="pages"><start>59</start>
<end>67</end>
</extent>
</part>
</relatedItem>
<identifier type="istex">33EDD4A9108394033C81853E3E593BE733EB88E1</identifier>
<identifier type="ark">ark:/67375/6H6-3RZTXR3N-8</identifier>
<identifier type="DOI">10.1016/S0021-9673(99)00755-4</identifier>
<identifier type="PII">S0021-9673(99)00755-4</identifier>
<accessCondition type="use and reproduction" contentType="copyright">©1999 Elsevier Science B.V.</accessCondition>
<recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-HKKZVM7B-M">elsevier</recordContentSource>
<recordOrigin>Elsevier Science B.V., ©1999</recordOrigin>
</recordInfo>
</mods>
<json:item><extension>json</extension>
<original>false</original>
<mimetype>application/json</mimetype>
<uri>https://api.istex.fr/document/33EDD4A9108394033C81853E3E593BE733EB88E1/metadata/json</uri>
</json:item>
</metadata>
<serie></serie>
</istex>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Lorraine/explor/LrgpV1/Data/Istex/Corpus

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001236 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Istex/Corpus/biblio.hfd -nk 001236 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Lorraine
   |area=    LrgpV1
   |flux=    Istex
   |étape=   Corpus
   |type=    RBID
   |clé=     ISTEX:33EDD4A9108394033C81853E3E593BE733EB88E1
   |texte=   Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study
}}

This area was generated with Dilib version V0.6.32.
Data generation: Sat Nov 11 15:47:48 2017. Site generation: Wed Mar 6 23:31:34 2024

	Serveur d'exploration sur le LRGP
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration sur le LRGP

Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study

Synthesis and properties of two new liquid crystals: an analytical and thermodynamic study

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri