Assemblies of fluorine containing bent-shaped liquid crystal molecules studied by using scanning tunneling microscopy

Lin, Niu and Rahman, Md Lutfor and Yanlian, Yang and Chen, Wang (2010) Assemblies of fluorine containing bent-shaped liquid crystal molecules studied by using scanning tunneling microscopy. In: International Conference on Nanoscience and Technology (ChinaNANO 2009), 1-3 September 2009, Beijing, China.

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Abstract

In this work we prepared a fluorine containing bent-shaped liquid crystal from biphenyl as the central core and rod-like azobenzene mesogens as the side arms, namely 4',3-biphenyl bis[4-(4'-hexadecanloxy-3-fluorophenylazo)benzoate] (L104). The self-assembly behaviors of L104 molecules on graphite surface were investigated by using scanning tunneling microscopy (STM) under ambient conditions. The high-resolution STM images of L104 assemblies revealed three kinds of structures showing the joint effects of dipole dipole interactions originated from the fluorine and the bent-core alignments for maximizing pi-pi interactions. These observations may be beneficial for understanding the assembly mechanism and designs for novel banana-shaped liquid crystal molecules.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords: Bent-Shaped Liquid Crystal, Scanning Tunneling Microscope, Self-Assembly
Subjects: Q Science > QD Chemistry
Divisions: SCHOOL > School of Science and Technology
Depositing User: Unnamed user with email storage.bpmlib@ums.edu.my
Date Deposited: 11 Mar 2011 05:31
Last Modified: 30 Dec 2014 01:35
URI: http://eprints.ums.edu.my/id/eprint/2214

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