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Vol. 26 No. 4 (2014): Vol 26 Issue 4

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2-D Columnar Assemblies of Diblock Rod-Coil Molecules Incorporating Cholesteryl Group

https://doi.org/10.14233/ajchem.2014.16021
Yang Liu
Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, P.R. China ;These authors contributed equally to this work
Yirong Pei
Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, P.R. China ;These authors contributed equally to this work
Zhuoshi Wang
Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, P.R. China
Junjie Cui
Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, P.R. China
Tie Chen
Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, P.R. China
Jingzhe Xu
Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, P.R. China
Long Yi Jin
Key Laboratory for Organism Resources of the Changbai Mountain and Functional Molecules, Ministry of Education and Department of Chemistry, College of Science, Yanbian University, No. 977 Gongyuan Road, Yanji 133002, P.R. China

Corresponding Author(s) : Tie Chen

tchen@ybu.edu.cn

Asian Journal of Chemistry, Vol. 26 No. 4 (2014): Vol 26 Issue 4

Abstract

Rod-coil molecules have a strong tendency to self-organize into supra-molecular nanostructures in the bulk state. In this article, we report synthesis and self-assembling behaviour of rod-coil molecules 1-3, consisting of a biphenyl and cholesteryl group as a rod segment and poly(ethylene oxide) (PEO) with a degree of polymerization of 7, 12 and 17 coil segments. Self-organization behaviour of these molecules investigated by means of differential scanning calorimetry, thermal polarizing optical microscopy and small-angle X-ray scattering in the bulk state reveal that volume fraction of PEO coil segments containing alkyl chain of cholesteryl group dramatically influence the self assembling behaviour of rod building block in the liquid crystalline phase. Molecules 1-3 self-assemble into 1-D bilayered structures with different d-spacing according to the lengths of coil domains in the solid state. While, self-organized molecular structures transfer into oblique columnar structure for molecule 1 and 2 from the crystalline to the liquid crystalline phase, further increasing coil to rod volume fraction, molecule 3 self assemble into hexagonal columnar aggregate through p-p stacking of rod building blocks.

Keywords

Self-assembly Rod-coil Small-angle X-ray scattering Cholesteryl 2-D Columnar
Liu, Y., Pei, Y., Wang, Z., Cui, J., Chen, T., Xu, J., & Yi Jin, L. (2014). 2-D Columnar Assemblies of Diblock Rod-Coil Molecules Incorporating Cholesteryl Group. Asian Journal of Chemistry, 26(4), 1127–1132. https://doi.org/10.14233/ajchem.2014.16021
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