A new type of hydrogen-bonded LBL photoalignment film for liquid crystal

Feng Zhen Lü; Zeng Hui Peng; Ling Li Zhang; Li Shuang Yao; Yan Liu; Li Xuan

A new type of hydrogen-bonded LBL photoalignment film for liquid crystal

Feng Zhen Lü
, Zeng Hui Peng
, Ling Li Zhang
, Li Shuang Yao
, Yan Liu
, Li Xuan^*

^*Corresponding author for this work

School of Physics

CAS - Changchun Institute of Optics Fine Mechanics and Physics
University of Chinese Academy of Sciences

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

A new type of hydrogen-bonded layer-by-layer (LBL) photoalignment film was fabricated and studied. The photosensitive hydrogen donor containing cinnamoyl groups (Poly (4-acryloyloxy)-cinnamic acid, PCA) was self-assembled with hydrogen accepter poly (4-vinylpyridine) (PVPy) in an organic solvent. Then a hydrogen-bonding-directed ultrathin film was formed. The uniformity and linear growth of the deposition procedure was proven by UV-Vis spectra and the interaction between PVPy and PCA was identified as hydrogen bonding using FT-IR spectroscopy. When linearly polarized ultraviolet light (LPUVL) irradiated the multilayer film, only the photosensitive double bond parallel to the polarization direction of LPUVL could be polymerized via, [2+2] cycloaddition. After the irradiation an anisotropic film was prepared, and we used this anisotropic film as an alignment layer of nematic liquid crystals, and obtained uniform and stable alignment results.

Original language	English
Pages (from-to)	273-277
Number of pages	5
Journal	Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica
Volume	25
Issue number	2
State	Published - Feb 2009

Keywords

Hydrogen-bond
Linearly polarized ultra-violet light
Liquid crystal
Photoalignment
Self-assembled multilayer

Cite this

@article{09ee0f4cf3004036a5bdfd3e5f091068,

title = "A new type of hydrogen-bonded LBL photoalignment film for liquid crystal",

abstract = "A new type of hydrogen-bonded layer-by-layer (LBL) photoalignment film was fabricated and studied. The photosensitive hydrogen donor containing cinnamoyl groups (Poly (4-acryloyloxy)-cinnamic acid, PCA) was self-assembled with hydrogen accepter poly (4-vinylpyridine) (PVPy) in an organic solvent. Then a hydrogen-bonding-directed ultrathin film was formed. The uniformity and linear growth of the deposition procedure was proven by UV-Vis spectra and the interaction between PVPy and PCA was identified as hydrogen bonding using FT-IR spectroscopy. When linearly polarized ultraviolet light (LPUVL) irradiated the multilayer film, only the photosensitive double bond parallel to the polarization direction of LPUVL could be polymerized via, [2+2] cycloaddition. After the irradiation an anisotropic film was prepared, and we used this anisotropic film as an alignment layer of nematic liquid crystals, and obtained uniform and stable alignment results.",

keywords = "Hydrogen-bond, Linearly polarized ultra-violet light, Liquid crystal, Photoalignment, Self-assembled multilayer",

author = "L{\"u}, \{Feng Zhen\} and Peng, \{Zeng Hui\} and Zhang, \{Ling Li\} and Yao, \{Li Shuang\} and Yan Liu and Li Xuan",

year = "2009",

month = feb,

language = "英语",

volume = "25",

pages = "273--277",

journal = "Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica",

issn = "1000-6818",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - A new type of hydrogen-bonded LBL photoalignment film for liquid crystal

AU - Lü, Feng Zhen

AU - Peng, Zeng Hui

AU - Zhang, Ling Li

AU - Yao, Li Shuang

AU - Liu, Yan

AU - Xuan, Li

PY - 2009/2

Y1 - 2009/2

N2 - A new type of hydrogen-bonded layer-by-layer (LBL) photoalignment film was fabricated and studied. The photosensitive hydrogen donor containing cinnamoyl groups (Poly (4-acryloyloxy)-cinnamic acid, PCA) was self-assembled with hydrogen accepter poly (4-vinylpyridine) (PVPy) in an organic solvent. Then a hydrogen-bonding-directed ultrathin film was formed. The uniformity and linear growth of the deposition procedure was proven by UV-Vis spectra and the interaction between PVPy and PCA was identified as hydrogen bonding using FT-IR spectroscopy. When linearly polarized ultraviolet light (LPUVL) irradiated the multilayer film, only the photosensitive double bond parallel to the polarization direction of LPUVL could be polymerized via, [2+2] cycloaddition. After the irradiation an anisotropic film was prepared, and we used this anisotropic film as an alignment layer of nematic liquid crystals, and obtained uniform and stable alignment results.

AB - A new type of hydrogen-bonded layer-by-layer (LBL) photoalignment film was fabricated and studied. The photosensitive hydrogen donor containing cinnamoyl groups (Poly (4-acryloyloxy)-cinnamic acid, PCA) was self-assembled with hydrogen accepter poly (4-vinylpyridine) (PVPy) in an organic solvent. Then a hydrogen-bonding-directed ultrathin film was formed. The uniformity and linear growth of the deposition procedure was proven by UV-Vis spectra and the interaction between PVPy and PCA was identified as hydrogen bonding using FT-IR spectroscopy. When linearly polarized ultraviolet light (LPUVL) irradiated the multilayer film, only the photosensitive double bond parallel to the polarization direction of LPUVL could be polymerized via, [2+2] cycloaddition. After the irradiation an anisotropic film was prepared, and we used this anisotropic film as an alignment layer of nematic liquid crystals, and obtained uniform and stable alignment results.

KW - Hydrogen-bond

KW - Linearly polarized ultra-violet light

KW - Liquid crystal

KW - Photoalignment

KW - Self-assembled multilayer

UR - https://www.scopus.com/pages/publications/60849087041

M3 - 文章

AN - SCOPUS:60849087041

SN - 1000-6818

VL - 25

SP - 273

EP - 277

JO - Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica

JF - Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica

IS - 2

ER -

A new type of hydrogen-bonded LBL photoalignment film for liquid crystal

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Keywords

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