Liquid crystal photoalignment using soluble photosensitive polyimide

Xiang Dan Li; Zhen Xin Zhong; Seung Hee Lee; Gilson Ghang; Myong Hoon Lee

doi:10.1143/JJAP.45.906

Liquid crystal photoalignment using soluble photosensitive polyimide

Xiang Dan Li
, Zhen Xin Zhong
, Seung Hee Lee
, Gilson Ghang
, Myong Hoon Lee^*

^*Corresponding author for this work

Department of Polymer -Nano Science &Technology

Jeonbuk National University

Research output: Contribution to journal › Journal article › peer-review

21 Scopus citations

Abstract

A novel soluble fluorinated polyimide containing a photosensitive chalcone unit in the main chain was investigated as a thermally stable photoalignment material for liquid crystals. A defect-free homogeneous alignment of liquid crystals was induced on the surface of a polymer film after exposure to linearly polarized UV light at an exposure energy of 7200 mJ/cm². Spectroscopic analyses revealed that [2 + 2] cycloadditon between the chalcone moieties generated the surface anisotropy needed to induce an efficient alignment of liquid crystals.

Original language	English
Pages (from-to)	906-908
Number of pages	3
Journal	Japanese Journal of Applied Physics
Volume	45
Issue number	2 A
DOIs	https://doi.org/10.1143/JJAP.45.906
State	Published - 2006.02.8

Keywords

Chalcone
Linearly polarized UV light
Photoalignment
Photosensitive polyimide

Quacquarelli Symonds(QS) Subject Topics

Physics & Astronomy

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10.1143/JJAP.45.906

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title = "Liquid crystal photoalignment using soluble photosensitive polyimide",

abstract = "A novel soluble fluorinated polyimide containing a photosensitive chalcone unit in the main chain was investigated as a thermally stable photoalignment material for liquid crystals. A defect-free homogeneous alignment of liquid crystals was induced on the surface of a polymer film after exposure to linearly polarized UV light at an exposure energy of 7200 mJ/cm2. Spectroscopic analyses revealed that [2 + 2] cycloadditon between the chalcone moieties generated the surface anisotropy needed to induce an efficient alignment of liquid crystals.",

keywords = "Chalcone, Linearly polarized UV light, Photoalignment, Photosensitive polyimide",

author = "Li, \{Xiang Dan\} and Zhong, \{Zhen Xin\} and Lee, \{Seung Hee\} and Gilson Ghang and Lee, \{Myong Hoon\}",

year = "2006",

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day = "8",

doi = "10.1143/JJAP.45.906",

language = "English",

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TY - JOUR

T1 - Liquid crystal photoalignment using soluble photosensitive polyimide

AU - Li, Xiang Dan

AU - Zhong, Zhen Xin

AU - Lee, Seung Hee

AU - Ghang, Gilson

AU - Lee, Myong Hoon

PY - 2006/2/8

Y1 - 2006/2/8

N2 - A novel soluble fluorinated polyimide containing a photosensitive chalcone unit in the main chain was investigated as a thermally stable photoalignment material for liquid crystals. A defect-free homogeneous alignment of liquid crystals was induced on the surface of a polymer film after exposure to linearly polarized UV light at an exposure energy of 7200 mJ/cm2. Spectroscopic analyses revealed that [2 + 2] cycloadditon between the chalcone moieties generated the surface anisotropy needed to induce an efficient alignment of liquid crystals.

AB - A novel soluble fluorinated polyimide containing a photosensitive chalcone unit in the main chain was investigated as a thermally stable photoalignment material for liquid crystals. A defect-free homogeneous alignment of liquid crystals was induced on the surface of a polymer film after exposure to linearly polarized UV light at an exposure energy of 7200 mJ/cm2. Spectroscopic analyses revealed that [2 + 2] cycloadditon between the chalcone moieties generated the surface anisotropy needed to induce an efficient alignment of liquid crystals.

KW - Chalcone

KW - Linearly polarized UV light

KW - Photoalignment

KW - Photosensitive polyimide

UR - https://www.scopus.com/pages/publications/32244434518

U2 - 10.1143/JJAP.45.906

DO - 10.1143/JJAP.45.906

M3 - Journal article

AN - SCOPUS:32244434518

SN - 0021-4922

VL - 45

SP - 906

EP - 908

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 2 A

ER -

Liquid crystal photoalignment using soluble photosensitive polyimide

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

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