Effect of Photodimerization of Chalcone Moiety on the Temporal Stability of Optically Induced Birefringence in Photoresponsive Polymers Bearing a p-Methoxyazobenzene

Dong Hoon Choi, Hyeon Taik Hong, Kang Jin Cho, Jae Hyung Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We synthesized three methacrylate monomers containing chalcone moiety, mesogenic unit, and p-methoxyazobenzene chromophore, respectively. Copolymers and homopolymer were prepared using those monomers. Trans-to-cis photoisomerization was observed under the exposure of UV light using UV-Vis absorption spectroscopy. The kinetic study of trans-to-cis photoisomerization was performed in three different polymers. Reorientation of polar azobenzene molecules induced optical anisotropy under a linearly polarized light at 365 nm. Azobenzene unit underwent photoisomerization and photodimerization can be achieved in chalcone moieties under the same range of wavelength of light. Reorientation of azobenzene molecule was observed followed by photodimerization of chalcone moieties. Regarding the optically induced birefringence, the temporal stability was monitored without excitation light. Effect of mesogenic group and photodimerization on the temporal stability of photoinduced birefringence was studied.

Original languageEnglish
Pages (from-to)189-195
Number of pages7
JournalKorea Polymer Journal
Volume7
Issue number3
Publication statusPublished - 1999 Dec 1
Externally publishedYes

Fingerprint

Bearings (structural)
Chalcone
Photoisomerization
Azobenzene
Birefringence
Polymers
Monomers
Optical anisotropy
Molecules
Methacrylates
Light polarization
Chromophores
Homopolymerization
Ultraviolet spectroscopy
Absorption spectroscopy
Ultraviolet radiation
Copolymers
Wavelength
Kinetics
azobenzene

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Polymers and Plastics

Cite this

Effect of Photodimerization of Chalcone Moiety on the Temporal Stability of Optically Induced Birefringence in Photoresponsive Polymers Bearing a p-Methoxyazobenzene. / Choi, Dong Hoon; Hong, Hyeon Taik; Cho, Kang Jin; Kim, Jae Hyung.

In: Korea Polymer Journal, Vol. 7, No. 3, 01.12.1999, p. 189-195.

Research output: Contribution to journalArticle

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