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Abstracts
We investigate the absorption spectra of poly (methyl methacrylate) (PMMA) thin films doped with Disperse Orange 11 (DO11) dye molecules which change under illumination with visible light. Dichroism measurements of the kinetics of the transmission changes at 472 nm at room and low temperatures (-60° C ± 2 °C) have been investigated. Our data show that the photoisomerisation reaction and the light-induced polar orientation depend on the molecular structure of the polymer. Simultaneous UV-visible spectroscopy at low temperature confirms the existence of two forms of DO11 molecules (keto and enol forms), which are responsible for the interaction with irradiating laser light and forming an anisotropic structure inside the PMMA/DO11 thin film.
Discipline
- 78.66.Qn: Polymers; organic compounds
- 78.20.-e: Optical properties of bulk materials and thin films(for optical properties related to materials treatment, see 81.40.Tv; for optical materials, see 42.70-a; for optical properties of superconductors, see 74.25.Gz; for optical properties of rocks and minerals, see 91.60.Mk; for optical properties of specific thin films, see 78.66.-w)
- 33.55.+b: Optical activity and dichroism
Journal
Year
Volume
Issue
Pages
857-863
Physical description
Dates
published
2009-05
received
2008-11-18
(unknown)
2009-04-21
Contributors
author
- Atomic Energy Commission, P.O. Box 6091, Damascus, Syria
author
- Atomic Energy Commission, P.O. Box 6091, Damascus, Syria
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv115n503kz