Liquid crystal alignment effect on photopolymer surface using an acrylate unit photopolymerized by a photoinitiator

Jun Young Kim, Jeoung Yeon Hwang, Tae Ho Kim, Dae Shik Seo, Joon Ung Lee

Research output: Contribution to journalLetter

15 Citations (Scopus)

Abstract

Photoalignment materials of PGMAcr, poly[3-(acryloyloxy)-2-hydroxypropyl methacrylate] using an acrylate unit photopolymerized by a photo-initiator and PGMA4Ch, poly[3-(4-chalconyloxy)-2-hydroxypropyl methacrylate] using photodimerization by the chalcone group were synthesized. Also, the liquid crystal (LC) alignment capabilities on the photopolymer layers were studied. A good LC alignment with UV exposure on the PGMAcr surface can be obtained. However, LC alignment defects were observed on the PGMA4Ch surface. The LC alignment capability of the PGMAcr surface by the photoinitiator was better than that of the PGMA4Ch surface by the chalcone group which is a photosensitive moiety.

Original languageEnglish
Pages (from-to)L54-L56
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number1 A/B
Publication statusPublished - 2003 Jan 15

Fingerprint

Photopolymers
photopolymers
acrylates
Liquid crystals
liquid crystals
alignment
initiators
Defects
defects

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

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title = "Liquid crystal alignment effect on photopolymer surface using an acrylate unit photopolymerized by a photoinitiator",
abstract = "Photoalignment materials of PGMAcr, poly[3-(acryloyloxy)-2-hydroxypropyl methacrylate] using an acrylate unit photopolymerized by a photo-initiator and PGMA4Ch, poly[3-(4-chalconyloxy)-2-hydroxypropyl methacrylate] using photodimerization by the chalcone group were synthesized. Also, the liquid crystal (LC) alignment capabilities on the photopolymer layers were studied. A good LC alignment with UV exposure on the PGMAcr surface can be obtained. However, LC alignment defects were observed on the PGMA4Ch surface. The LC alignment capability of the PGMAcr surface by the photoinitiator was better than that of the PGMA4Ch surface by the chalcone group which is a photosensitive moiety.",
author = "Kim, {Jun Young} and Hwang, {Jeoung Yeon} and Kim, {Tae Ho} and Seo, {Dae Shik} and Lee, {Joon Ung}",
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Liquid crystal alignment effect on photopolymer surface using an acrylate unit photopolymerized by a photoinitiator. / Kim, Jun Young; Hwang, Jeoung Yeon; Kim, Tae Ho; Seo, Dae Shik; Lee, Joon Ung.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 42, No. 1 A/B, 15.01.2003, p. L54-L56.

Research output: Contribution to journalLetter

TY - JOUR

T1 - Liquid crystal alignment effect on photopolymer surface using an acrylate unit photopolymerized by a photoinitiator

AU - Kim, Jun Young

AU - Hwang, Jeoung Yeon

AU - Kim, Tae Ho

AU - Seo, Dae Shik

AU - Lee, Joon Ung

PY - 2003/1/15

Y1 - 2003/1/15

N2 - Photoalignment materials of PGMAcr, poly[3-(acryloyloxy)-2-hydroxypropyl methacrylate] using an acrylate unit photopolymerized by a photo-initiator and PGMA4Ch, poly[3-(4-chalconyloxy)-2-hydroxypropyl methacrylate] using photodimerization by the chalcone group were synthesized. Also, the liquid crystal (LC) alignment capabilities on the photopolymer layers were studied. A good LC alignment with UV exposure on the PGMAcr surface can be obtained. However, LC alignment defects were observed on the PGMA4Ch surface. The LC alignment capability of the PGMAcr surface by the photoinitiator was better than that of the PGMA4Ch surface by the chalcone group which is a photosensitive moiety.

AB - Photoalignment materials of PGMAcr, poly[3-(acryloyloxy)-2-hydroxypropyl methacrylate] using an acrylate unit photopolymerized by a photo-initiator and PGMA4Ch, poly[3-(4-chalconyloxy)-2-hydroxypropyl methacrylate] using photodimerization by the chalcone group were synthesized. Also, the liquid crystal (LC) alignment capabilities on the photopolymer layers were studied. A good LC alignment with UV exposure on the PGMAcr surface can be obtained. However, LC alignment defects were observed on the PGMA4Ch surface. The LC alignment capability of the PGMAcr surface by the photoinitiator was better than that of the PGMA4Ch surface by the chalcone group which is a photosensitive moiety.

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