Vertical alignment of liquid crystals using novel self-assembled molecular layer of alkylated benzoic acid derivatives

The one-step vertical alignment of liquid crystals (LCs) was achieved by forming a novel self-assembled molecular layer of alkylated benzoic acid derivatives on an indium tin oxide substrate through hydrogen bonding. This method utilizes the simple doping of the alignment material into the LCs. The...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2016-08, Vol.635 (1), p.114-119
Main Authors: Son, Intae, Kim, Jae Hong, Lee, Byungsun, Kim, Chunho, Yoo, Ji Yong, Lee, Jun Hyup
Format: Article
Language:English
Subjects:
Acids
Alignment
Alkylation
Benzoic acid
Benzoic acid derivative
Color
Crystals
Derivatives
Devices
Hydrogen bonding
liquid crystal alignment
Liquid crystals
Molecular chemistry
molecular layer
self-assembly
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Summary:The one-step vertical alignment of liquid crystals (LCs) was achieved by forming a novel self-assembled molecular layer of alkylated benzoic acid derivatives on an indium tin oxide substrate through hydrogen bonding. This method utilizes the simple doping of the alignment material into the LCs. The assembled molecular layer promoted the stable homeotropic LC alignment. The electro-optical characteristics of LC devices exhibited stable vertical alignments and fast response times, depending on the number of rigid aromatic rings in the alignment material. Our simplified alignment method allows the fabrication of LC devices without a separate alignment step for fast LC switching.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2016.1200371