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| Mesomorphous structure change by tail chain number in ionic liquid crystalline complexes of linear polymer and amphiphiles |
| Zhi Yu Cheng, Bi Ye Ren, Shu Ying He, Xin Xing Liu, Zhen Tong |
| Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, China |
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Abstract Three polymer-amphiphile complexes were prepared by combining poly(allylamine hydrochloride) (PAH) with the potassium salt of mono-, di-, and trisubstituted benzoic acid dendrons (4-octyloxybenzoic acid, 3, 5-dioctyloxybenzoic acid, and 3, 4, 5-trioctyloxybenzoic acid). The solid structure and properties were monitored with FT-IR, XRD, TG, DSC, and polarized optical microscope (POM). Difference in the tail chain number of the dendritic amphiphile induced two different mesomorphous structures:lamella for the mono-, disubstituted dendron containing complexes and hexagonal column for the trisubstituted dendron containing complexes. These corresponded to the ionic thermotropic liquid crystal SmA and φh phases, respectively. This finding is significant for design of functional nanostructures based on the ionic complexation of polymers and amphiphiles.
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Received: 01 March 2011
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| Fund:The financial support from the NSFC (No.50873037), the PCSIRT (No.IRT0827), the Fundamental Research Funds for the Central Universities (No.2009ZM0017), China Postdoctoral Science Foundation (No.20100470908), and the NSF of Guangdong Province (No.10451064101005118) is gratefully acknowledged. |
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Corresponding Authors:
Bi Ye Ren,E-mail addresses:mcbyren@scut.edu.cn;Zhen Tong,E-mail addresses:mcztong@scut.edu.cn
E-mail: mcbyren@scut.edu.cn;mcztong@scut.edu.cn
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