Fabrication and characterization of imprinted photonic crystalline polymer matrices via multiple UV polymerizations

Chih Chieh Chien, Jui-Hsiang Liu, A. V. Emelyanenko

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A photonic polymer network was imprinted using multiple UV-induced polymerizations in the presence of cholesteric liquid crystals (CLCs). Here, the imprinted polymer matrices provided a chiral environment due to the chirality of the polymer networks. The fabricated cell exhibited Bragg reflections even in the absence of anisotropic materials. Moreover, a phototunable liquid crystal cell was fabricated with photosensitive liquid crystalline ethyl 4-[4-(11-acryloyloxy undecyloxy) phenyl azobenzoyl-oxyl] benzoate. The tuning properties of the cells were examined as a function of the irradiation time and concentration of the photosensitive material. Both the tuning rate and dark relaxation of E-Z photoisomerization of the embedded LCs in the polymer network were also examined.

Original languageEnglish
Pages (from-to)22446-22451
Number of pages6
JournalJournal of Materials Chemistry
Volume22
Issue number42
DOIs
Publication statusPublished - 2012 Nov 14

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Polymer matrix
Photonics
Polymers
Polymerization
Crystalline materials
Fabrication
Tuning
Bragg cells
Cholesteric liquid crystals
Photoisomerization
Liquid Crystals
Chirality
Benzoates
Liquid crystals
Irradiation
Liquids

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Cite this

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abstract = "A photonic polymer network was imprinted using multiple UV-induced polymerizations in the presence of cholesteric liquid crystals (CLCs). Here, the imprinted polymer matrices provided a chiral environment due to the chirality of the polymer networks. The fabricated cell exhibited Bragg reflections even in the absence of anisotropic materials. Moreover, a phototunable liquid crystal cell was fabricated with photosensitive liquid crystalline ethyl 4-[4-(11-acryloyloxy undecyloxy) phenyl azobenzoyl-oxyl] benzoate. The tuning properties of the cells were examined as a function of the irradiation time and concentration of the photosensitive material. Both the tuning rate and dark relaxation of E-Z photoisomerization of the embedded LCs in the polymer network were also examined.",
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Fabrication and characterization of imprinted photonic crystalline polymer matrices via multiple UV polymerizations. / Chien, Chih Chieh; Liu, Jui-Hsiang; Emelyanenko, A. V.

In: Journal of Materials Chemistry, Vol. 22, No. 42, 14.11.2012, p. 22446-22451.

Research output: Contribution to journalArticle

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