Synthesis of New Liquid Crystalline Diglycidyl Ethers

被引：14

作者：

Mohammed, Issam Ahmed ^{[1
]}

Hamidi, Rashidah Mohamed ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Ind Technol, George Town 11800, Malaysia

来源：

MOLECULES | 2012年 / 17卷 / 01期

关键词：

synthesis; diglycidyl ether; schiff base; liquid crystal;

D O I：

10.3390/molecules17010645

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The phenolic Schiff bases I-VI were synthesized by condensation reactions between various diamines, namely o-dianisidine, o-tolidine and ethylenediamine with vanillin or p-hydroxybenzaldehyde and subsequent reactions between these phenolic Schiff bases and epichlorohydrin to produce new diglycidyl ethers Ia-VIa. The structures of these compounds were confirmed by CHN, FT-IR, H-1-NMR, and C-13-NMR spectroscopy. Their thermotropic liquid crystalline behavior was studied using differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). All the diglycidyl ethers prepared exhibit nematic mesophases, except for Va and VIa, which did not show any transition mesophases, but simply flow to liquids.

引用

页码：645 / 656

页数：12

共 21 条

[1] Synthesis of α,ω-bis(oxazolidinone)polyoxyethylene via a lithium bromide-catalyzed reaction of oligoethylene glycol diglycidyl ethers with isocyanates [J].

Aroua, Lotfi ;

Baklouti, Ahmed .

SYNTHETIC COMMUNICATIONS, 2007, 37 (11) :1935-1942

[2] New epoxy resins based on recycled poly(ethylene terephthalate) as organic coatings [J].

Atta, Ayman M. ;

El-Kafrawy, Ahmed F. ;

Aly, Morsy H. ;

Abdel-Azim, Abdel-Azim A. .

PROGRESS IN ORGANIC COATINGS, 2007, 58 (01) :13-22

[3] Features of reaction between fluorine-containing glycidyl ethers and alcohols in basic medium [J].

Bazhin, D. N. ;

Gorbunova, T. I. ;

Zapevalov, A. Ya. ;

Kirichenko, V. E. ;

Saloutin, V. I. .

RUSSIAN JOURNAL OF ORGANIC CHEMISTRY, 2007, 43 (05) :656-659

[4]

Ha ST, 2010, INT J PHYS SCI, V5, P1256

[5] Urinary bisphenol A and plasma hormone concentrations in male workers exposed to bisphenol A diglycidyl ether and mixed organic solvents [J].

Hanaoka, T ;

Kawamura, N ;

Hara, K ;

Tsugane, S .

OCCUPATIONAL AND ENVIRONMENTAL MEDICINE, 2002, 59 (09) :625-628

[6]

Herweh J. E., 1971, TETRAHEDRON LETT, V12, P809

[7] Microfabrication of anisotropic organic materials via self-organization of an ionic perylenemonoimide [J].

Huang, Liming ;

Tam-Chang, Suk-Wah ;

Seo, Wonewoo ;

Rove, Kyle .

ADVANCED MATERIALS, 2007, 19 (23) :4149-+

[8]

Issam A.M., 2010, MOLECULES, V15, P3260

[9] Improvement of thermal stability of new heteroaromatic poly(azomethine urethane)s [J].

Issam, AM ;

Ismail, J .

JOURNAL OF APPLIED POLYMER SCIENCE, 2006, 100 (02) :1198-1204

[10] Synthesis and Physical Characterization of 2-((E)-1-(3-((E)-1-(2-hydroxyphenyl)ethylideneamino)-2methylphenylimino)ethyl)phenol [J].

Jarrahpour, A. A. ;

Jalbout, A. F. ;

Rezaei, S. ;

Trzaskowski, B. .

MOLBANK, 2006, (01)

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