Citation: Zhi Yu Cheng, Bi Ye Ren, Shu Ying He, Xin Xing Liu, Zhen Tong. Mesomorphous structure change by tail chain number in ionic liquid crystalline complexes of linear polymer and amphiphiles[J]. Chinese Chemical Letters, ;2011, 22(11): 1375-1378. doi: 10.1016/j.cclet.2011.05.024 shu

Mesomorphous structure change by tail chain number in ionic liquid crystalline complexes of linear polymer and amphiphiles

Research Institute of Materials Science, South China University of Technology, Guangzhou 510640, China

Received Date: 1 March 2011

Fund Project: 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.

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 φ_h phases, respectively. This finding is significant for design of functional nanostructures based on the ionic complexation of polymers and amphiphiles.
- Polymer-amphiphile complex,
- Poly (allylamine hydrochloride),
- Dendritic amphiphile,
- Ionic thermotropic liquid crystal
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