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Two-Dimensional Assemblies of Banana-Shaped Liquid Crystal Molecules with Short Alkyl Chains at Solid/Liquid Interface

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Abstract:

Two-dimensional assemblies of a series of banana-shaped liquid crystal molecules with short alkyl chains, (LC n , n = 5, 6), are investigated at the solid/liquid interface on graphite surface by using scanning tunneling microscopy (STM) under ambient conditions. The high-resolution STM images of the LC n assemblies demonstrated a lamellae structure with bright bands and dark stripes, in which the alkyl chains of neighboring rows were either interdigitated or tail-to-tail due to the van der Waals interactions. The results in this paper are different with other reported banana-shaped liquid crystals, in which the core may play a dominant role in the self-assembly and the solvent molecules may also play a role in the assemblies. It may be helpful in understanding the assembly mechanism of banana-shaped liquid crystal molecules.

Keywords: BANANA-SHAPED LIQUID CRYSTAL; SCANNING TUNNELING MICROSCOPE; SELF-ASSEMBLY

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2009.C112

Publication date: 2009-02-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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