Synthesis and Liquid Crystalline Behaviour of Benzoic Acid Derivatives Containing Methoxyazobenzene

Chem. J. Chinese Universities

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Synthesis and Liquid Crystalline Behaviour of Benzoic Acid Derivatives Containing Methoxyazobenzene

BAI Bing-Lian, LI Min

Key Laboratory for Automobile Materials of Ministry of Education, College of Materials Sciences and Engineering, Jilin University, Changchun 130012, China

Received:2005-12-16 Revised:1900-01-01 Online:2006-09-10 Published:2006-09-10
Contact: LI Min

Abstract

Abstract: A novel type of H-bonded liquid crystals, namely 3,4,5-{4-[(4-methoxy-phenyl)-azo]-phen-oxy}-alkoxy-benzoic acid(D_n, n=3,6,10), was synthesized and characterized. The FT IR spectra of D₁₀ in the range of 1670—1650 cm^-1at different temperatures were examined. The results show that the carboxyl acid groups in D₁₀ are associated to form intermolecular double hydrogen bonding between —C=O and —OH groups in crystalline up to the isotropic phase. The benzoic acid derivatives exhibiting nematic phase were obtained through molecular design by preventing segregation and modulating intermolecular interactions effectively.

Key words: Hydrogen bonds, Methoxyazobenzene, Supramolecule, Benzoic acid derivative

CLC Number:

O631

TrendMD:

BAI Bing-Lian, LI Min
. Synthesis and Liquid Crystalline Behaviour of Benzoic Acid Derivatives Containing Methoxyazobenzene[J]. Chem. J. Chinese Universities, doi: .

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Synthesis and Liquid Crystalline Behaviour of Benzoic Acid Derivatives Containing Methoxyazobenzene

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