引用本文:
Sie Tiong Ha, Lay Khoon Ong, Siew Ling Lee, Hong Cheu Lin, Yip Foo Win, Siew Teng Ong. Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent[J]. Chinese Chemical Letters,
2010, 21(6): 637-640.
doi:
10.1016/j.cclet.2010.01.023
Citation: Sie Tiong Ha, Lay Khoon Ong, Siew Ling Lee, Hong Cheu Lin, Yip Foo Win, Siew Teng Ong. Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent[J]. Chinese Chemical Letters, 2010, 21(6): 637-640. doi: 10.1016/j.cclet.2010.01.023
Citation: Sie Tiong Ha, Lay Khoon Ong, Siew Ling Lee, Hong Cheu Lin, Yip Foo Win, Siew Teng Ong. Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent[J]. Chinese Chemical Letters, 2010, 21(6): 637-640. doi: 10.1016/j.cclet.2010.01.023
Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent
摘要:
A homologous series of Schiff base esters, 4-chlorobenzylidene-4'-n-alkanoyloxyanilines, containing even number of carbons at the end groups of the molecules (Cn-1H2n-1COO-, n=4,6,8,10,12,14,16) were synthesized. The mesomorphic properties were investigated by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). It was found that the end groups of the molecules had an effect on the mesomorphic properties. n-Butanoyloxy was found non-mesogenic, whilst n-hexanoyloxy exhibited monotropic smectic phase. The higher members in this homologous series were enantiotropic smectogens.
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关键词:
- Schiff base esters
- / Smectic A
- / Smectic B
- / Liquid crystal
English
Synthesis and mesomorphic properties of Schiff base esters possessing terminal chloro substituent
Abstract:
A homologous series of Schiff base esters, 4-chlorobenzylidene-4'-n-alkanoyloxyanilines, containing even number of carbons at the end groups of the molecules (Cn-1H2n-1COO-, n=4,6,8,10,12,14,16) were synthesized. The mesomorphic properties were investigated by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). It was found that the end groups of the molecules had an effect on the mesomorphic properties. n-Butanoyloxy was found non-mesogenic, whilst n-hexanoyloxy exhibited monotropic smectic phase. The higher members in this homologous series were enantiotropic smectogens.
-
Key words:
- Schiff base esters
- / Smectic A
- / Smectic B
- / Liquid crystal
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