Photoswitching Properties of Polyacetylene Derivatives with a Photoinduced Azobenzene Moiety in the Side Group

초록

We report on the photoswitching properties of novel mono-substituted polyacetylene derivatives with various azobenzene moieties that are photochemically reactive in the side group. Polymerization of the polyacetylene derivatives were carried out with Ziegler-Natta, metathesis and Rh complex catalysts. When exposed with 350 nm UV a 450 nm visible monochromatic light, the azobenzene side groups in the polyacetylene derivatives undergo trans <-> cis reversible photoisomerization process. The photoisomerization rate of polyacetylene derivatives having a long alkyl chain in the azobenzene terminal group was more effective due to the providing of enough intermolecular free volume.

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