Synthesis and properties of three novel series of monomers containing para-methoxyazobenzene as the mesogenic group

Guojie Wang Department of Materials Science, Jilin University, Changchun 130023, PR China

Min Li Department of Materials Science, Jilin University, Changchun 130023, PR China

Mingming Yu Department of Materials Science, Jilin University, Changchun 130023, PR China

Chaowei Guo Department of Materials Science, Jilin University, Changchun 130023, PR China

Xinfang Chen Department of Materials Science, Jilin University, Changchun 130023, PR China

Gao Li State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China

Enle Zhou State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China

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Abstract

Three novel series of monomers, namely n-1-bromo-[4-(4-methoxyphenylazo)phenyloxy]-alkanes (Bn, n = 3, 6, 10), n-[4-(4-methoxyphenylazo)phenyloxy]alkyloxy-4-methoxybenzene (Cn, n = 3, 6, 10) and n-[4-(4-methoxyphenylazo)phenyloxy]alkyloxy-[4-methoxy-2,5-bis(chloromethyl)]benzene (Dn, n = 3, 6, 10) were synthesized and characterized with FTIR, ¹H NMR, UV-visible and fluorescence spectroscopy. Their thermal behaviour was studied by different scanning calorimetry and polarizing optical microscopy. The results show that B3, B6 and C6 exhibit monotropic nematic liquid crystalline behaviour.

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Synthesis and properties of three novel series of monomers containing para-methoxyazobenzene as the mesogenic group

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