Photo-oriented trisazobenzene layers for patterned liquid-crystal alignment

Wolfer, Pascal, Kreger, Klaus, Schmidt, Hans-Werner, Stingelin, Natalie and Smith, Paul (2012) Photo-oriented trisazobenzene layers for patterned liquid-crystal alignment. Molecular Crystals and Liquid Crystals, 562 1: 133-140. doi:10.1080/15421406.2012.674857


Author Wolfer, Pascal
Kreger, Klaus
Schmidt, Hans-Werner
Stingelin, Natalie
Smith, Paul
Title Photo-oriented trisazobenzene layers for patterned liquid-crystal alignment
Journal name Molecular Crystals and Liquid Crystals   Check publisher's open access policy
ISSN 1542-1406
1543-5318
Publication date 2012-01-01
Sub-type Article (original research)
DOI 10.1080/15421406.2012.674857
Open Access Status Not Open Access
Volume 562
Issue 1
Start page 133
End page 140
Total pages 8
Place of publication Philadelphia, PA, United States
Publisher Taylor & Francis
Language eng
Subject 1600 Chemistry
3104 Condensed Matter Physics
2500 Materials Science
Formatted abstract
Photosensitive trisazobenzene-based layers, after irradiation with polarized light, are employed to align the common liquid-crystal (LC) compound 4-cyano-4-heptylbiphenyl (7CB) into predetermined patterns. Surface analysis of the trisazobenzene films indicate that ordering of the LC material is not caused by illumination-induced surface relief structures, but through molecular mesoepitaxial phenomena. This finding can be exploited to produce in one-step in-plane patterns of randomly oriented and ordered macroscopic LC domains by irradiation of the substrates.
Keyword Azobenzene derivatives
Cyanobiphenyl
Liquid crystal cells
Orientation layer
Photo-induced alignment
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Organic Photonics and Electronics
 
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