Optically induced anisotropy of polyurethane containing heterocyclic azo chromophores

Hyeon Taik Hong, Jae Hyung Kim, Dong Hoon Choi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We synthesized two different polyurethanes containing methylsulfonyl benzothiazolyl azo chromophore (MS-polyurethane) and p-nitroazobenzene chromophore (NP-polyurethane) in the side chain by condensation polymerization respectively. The structural effect of the chromophore on the level and the induction rate of induced birefringence was investigated. Polarized absorption spectroscopy was employed to study the reorientation of azobenzene chromophore using two polymers. We also investigated the properties of optically induced birefringence in Polyurethane film by changing the wavelength (λ= 488 nm, 514 nm) of the linearly polarized excitation light.

Original languageEnglish
Pages (from-to)181-184
Number of pages4
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume370
Publication statusPublished - 2001 Dec 1
Externally publishedYes

Fingerprint

Polyurethanes
Chromophores
chromophores
Anisotropy
anisotropy
Birefringence
birefringence
Azobenzene
Polycondensation
Absorption spectroscopy
retraining
induction
Polymers
absorption spectroscopy
polymerization
condensation
Wavelength
polymers
wavelengths
excitation

Keywords

  • Azobenzene chromophore
  • Optical anisotropy
  • Polyurethane

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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AU - Kim, Jae Hyung

AU - Choi, Dong Hoon

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AB - We synthesized two different polyurethanes containing methylsulfonyl benzothiazolyl azo chromophore (MS-polyurethane) and p-nitroazobenzene chromophore (NP-polyurethane) in the side chain by condensation polymerization respectively. The structural effect of the chromophore on the level and the induction rate of induced birefringence was investigated. Polarized absorption spectroscopy was employed to study the reorientation of azobenzene chromophore using two polymers. We also investigated the properties of optically induced birefringence in Polyurethane film by changing the wavelength (λ= 488 nm, 514 nm) of the linearly polarized excitation light.

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