High and stable photoinduced anisotropy in guest-host polymer mediated by chromophore aggregation

Arri Priimägi, Andriy Shevchenko, Matti Kaivola, Francisco J. Rodriguez, Martti Kauranen, Paul Rochon

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

We present a novel materials concept for optical inscription of stable birefringent optical elements into guest-host type polymers by making use of chromophore aggregation. The method is based on photoalignment of azobenzene chromophores, the aggregation of which leads to significant enhancement and stabilization of the photoinduced birefringence. The obtained order parameter of the molecular alignment (0.3) in combination with the exceptional thermal stability of the anisotropy renders the material system unique among amorphous azobenzene-containing polymers and provides a route toward designing efficient photoresponsive optical elements through the guest-host type approach.

Original languageEnglish
Pages (from-to)1813-1815
Number of pages3
JournalOptics Letters
Volume35
Issue number11
DOIs
Publication statusPublished - 1 Jun 2010
MoE publication typeA1 Journal article-refereed

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