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https://doi.org/10.5562/cca2150

Symmetric Bent-core Liquid Crystals of Some Schiff Bases Containing Azo Linkage

Catalina Ionica Ciobanu ; Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, Bd. D. Mangeron 71A, 700050 Iasi, Romania
Irina Carlescu ; Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, Bd. D. Mangeron 71A, 700050 Iasi, Romania
Gabriela Lisa ; Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, Bd. D. Mangeron 71A, 700050 Iasi, Romania
Dan Scutaru ; Department of Natural and Synthetic Polymers, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, Bd. D. Mangeron 71A, 700050 Iasi, Romania

Puni tekst: engleski, pdf (13 MB) str. 7-16 preuzimanja: 1.011* citiraj
APA 6th Edition
Ciobanu, C.I., Carlescu, I., Lisa, G. i Scutaru, D. (2014). Symmetric Bent-core Liquid Crystals of Some Schiff Bases Containing Azo Linkage. Croatica Chemica Acta, 87 (1), 7-16. https://doi.org/10.5562/cca2150
MLA 8th Edition
Ciobanu, Catalina Ionica, et al. "Symmetric Bent-core Liquid Crystals of Some Schiff Bases Containing Azo Linkage." Croatica Chemica Acta, vol. 87, br. 1, 2014, str. 7-16. https://doi.org/10.5562/cca2150. Citirano 16.06.2021.
Chicago 17th Edition
Ciobanu, Catalina Ionica, Irina Carlescu, Gabriela Lisa i Dan Scutaru. "Symmetric Bent-core Liquid Crystals of Some Schiff Bases Containing Azo Linkage." Croatica Chemica Acta 87, br. 1 (2014): 7-16. https://doi.org/10.5562/cca2150
Harvard
Ciobanu, C.I., et al. (2014). 'Symmetric Bent-core Liquid Crystals of Some Schiff Bases Containing Azo Linkage', Croatica Chemica Acta, 87(1), str. 7-16. https://doi.org/10.5562/cca2150
Vancouver
Ciobanu CI, Carlescu I, Lisa G, Scutaru D. Symmetric Bent-core Liquid Crystals of Some Schiff Bases Containing Azo Linkage. Croatica Chemica Acta [Internet]. 2014 [pristupljeno 16.06.2021.];87(1):7-16. https://doi.org/10.5562/cca2150
IEEE
C.I. Ciobanu, I. Carlescu, G. Lisa i D. Scutaru, "Symmetric Bent-core Liquid Crystals of Some Schiff Bases Containing Azo Linkage", Croatica Chemica Acta, vol.87, br. 1, str. 7-16, 2014. [Online]. https://doi.org/10.5562/cca2150

Sažetak
The paper presents the synthesis and liquid crystalline properties of some new symmetric bent-core liquid crystals containing a 1,3-dihydroxybenzene central core disubstituted with mesogenic units consisting of three aromatic rings connected through esteric, azomethinic and azo groups. The wings are ended with terminal acyloxy or alkyloxy chains containing 6 to 10 carbon atoms. Compounds were ob¬tained by the condensation reactions between some 4-((4-alcanoyloxyphenyl)azo)benzaldehydes or 4-((4-alkyloxyphenyl)azo)benzaldehydes with the 1,3-phenylene bis(4-aminobenzoate) core. The new synthe-sized compounds were characterized from structural point of view (1H NMR, 13C NMR, MS spectrosco¬py) and liquid crystalline properties (polarizing optical microscopy and differential scanning calorimetry). All the banana shaped compounds presented enantiotropic liquid crystalline properties, with a wide-ranging stability of mesophases both on heating and cooling cycles. The synthesized compounds present¬ed a good thermal stability in the existence range of the mesophases as evidenced by thermogravimetric studies. (doi: 10.5562/cca2150)

Ključne riječi
Schiff Bases; symmetric bent-core compounds; mesomorphic properties; azo linkage

Hrčak ID: 122274

URI
https://hrcak.srce.hr/122274

Posjeta: 1.317 *