Controlling Orientation Direction of Discotic Columns Assembled in Microtrenches

Microtrenches have been produced on the surface of a glass substrate using conventional photolithography technique. When subsequently deposited on the micro-patterned substrate, discotic triphenylene molecules are found to assemble into columns with orientational ordering. Homogeneous alignment of t...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2012-02, Vol.553 (1), p.185-192
Main Authors: Chiang, Cheng-Yan, Underwood, Ian, Zheng, Wenjun
Format: Article
Language:English
Subjects:
Alignment
Crystals
Deposition
disc-like molecules
discotic column alignment
discotic column orientation
Glass
Liquid crystals
microtopological patterned surface
microtrench
Molecular structure
Molecules
Orientation
Photolithography
Topology
Trenches
Walls
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Summary:Microtrenches have been produced on the surface of a glass substrate using conventional photolithography technique. When subsequently deposited on the micro-patterned substrate, discotic triphenylene molecules are found to assemble into columns with orientational ordering. Homogeneous alignment of the discotic columns has been produced on the substrate with parallel microtrenches. The orientational direction of the discotic columns can be controlled using a set of controlling microtrenches. By properly modifying the topological structures of the controlling microtrenches we are able to tune the discotic columns assembled in the primary trenches to align either parellel or perpendicular to the walls of the trenches.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2011.609469