The still unknown azobenzene - wavelength dependent photoanisotropy in amorphous azobenzene polymers

We demonstrate a new type of anisotropy in thin films of amorphous azobenzene polymers induced between 570 and 633 nm, where the absorbance in the film is on the order of 0.05. The anisotropy has a pronounced radial contribution. This observation points to an additional mechanism for the alignment o...

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Veröffentlicht in:	Optics express 2013-01, Vol.21 (2), p.1812-1819
Hauptverfasser:	Ramanujam, P S, Jensen, Ole Bjarlin, Tidemand-Lichtenberg, Peter
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption Anisotropy Azo Compounds - chemistry Azo Compounds - radiation effects Light Materials Testing Polymers - chemistry Polymers - radiation effects Refractometry - methods
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	We demonstrate a new type of anisotropy in thin films of amorphous azobenzene polymers induced between 570 and 633 nm, where the absorbance in the film is on the order of 0.05. The anisotropy has a pronounced radial contribution. This observation points to an additional mechanism for the alignment of azobenzene molecules.
ISSN:	1094-4087 1094-4087
DOI:	10.1364/OE.21.001812