Couverture de Liquid Crystals of 2,4-Substituted-1,3-Thiazole Derivatives
Titre du livre:

Liquid Crystals of 2,4-Substituted-1,3-Thiazole Derivatives

Synthesis, Characterization and Liquid Crystalline Properties of Some 2,4-Substituted-1,3-Thiazole Derivatives

Scholars' Press (24-09-2014 )

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ISBN-13:

978-3-639-66298-6

ISBN-10:
3639662989
EAN:
9783639662986
Langue du livre:
Anglais
texte du rabat:
A new compounds of 2,4-substituted-1,3- thiazole containing amines [I] and [II], Schiff bases [IV] and [V], amides [VI]-[X],esters [XI] - [XIII], thiazolidinones [XIV]-[XVIII] and 1,3-oxazepines [XIX]-[XXV] were Synthesized and characterized by melting points, FTIR spectroscopy, elemental analysis, 1HNMR,13CNMR, dept135and Mass spectroscopy. The liquid crystalline properties of the synthesized compounds were verified by using hot-stage polarizing optical microscopy (POM) and differential scanning calorimeter (DSC). The compound [I] was found to be nematic textures (N). The first series of this study [II]n display only enantiotropic nematic phase when n=1-5 while the compounds with n =6-8 display two mesophasese smectic C(SmC) and nematic phases(N). All compounds of series [IV]n were found to be enantiotropic nematic phase. Compounds[VI]a and[VI]b showed both semctic and nematic phases. Compounds [XI]a, b and [XIII]a, b showed only nematic texture but the compounds [XI]c and [XIII]c did not show any liquid crystalline properties. All compounds of series [XVII]n with n=1,3-7 display only nematic texture but compound with n=8 showed semactic C phase (SmC) in addition of ne
Maison d'édition:
Scholars' Press
Site Web:
http://www.scholars-press.com
de (auteur) :
Nisreen H. Karam, Jumbad H. Tomma, Ammar H. Al-Dujaili
Numéro de pages:
180
Publié le:
24-09-2014
Stock:
Disponible
Catégorie:
Chimie organique
Prix:
79.90 €
Mots-clés:
liquid crystals, 1, Heterocyclic, 3-Thiazole, nematic, Smectic

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