Optimization of the photo-orientation rate of an azobenzene-containing polymer based on a kinetic model of photoinduced ordering

Alexey V. Bogdanov*, Alexey Yu Bobrovsky, Andrey Kh Vorobiev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The explicit dependence of the rate of photoinduced ordering (photo-orientation) of an azobenzene-containing liquid-crystalline polymer on the photostationary concentration of cis-azobenzene has been predicted theoretically and found experimentally. The employed kinetic model based on the photoinduced rearrangement of the domain structure of a liquid-crystalline material predicts the maximum rate of photo-orientation at ca. 50% content of the cis-isomer in the photostationary state of irradiation. For experimental fine tuning of the photostationary trans-cis ratio, the simultaneous irradiation of material with two beams of light with different wavelengths was employed. The excellent agreement of theory and experiment indicates that the difference of photostationary fractions of cis-azobenzene fragments in adjacent domains of different orientations is the driving force of photoinduced ordering.

Original languageEnglish
Pages (from-to)16690-16697
Number of pages8
JournalPhysical Chemistry Chemical Physics
Volume23
Issue number31
DOIs
Publication statusPublished - 21 Aug 2021
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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