Macromolecular Symposia

Cover image for Vol. 374 Issue 1

December 15, 2009

Functional Polymers: Luminescent Mechanochromic Sensors

Functional Polymers: Luminescent Mechanochromic Sensors

Functional Polymers: Luminescent Mechanochromic Sensors

Joseph Lott and Christoph Weder*

Luminogenic polymers with stimuli-responsive properties can be prepared by incorporating small amounts of excimer forming sensor dyes into various host polymers. C. Weder and J. Lott produce luminogenic mechanochromic thin films by blending cyano-substituted excimer-forming oligo(phenylene vinylene) dyes with two fluorinated host polymers of similar chemical composition but different crystallinity. In agreement with previous findings, aggregate size and matrix crystallinity were shown to be important factors determining sensor performance. The underlying mechanism - dispersion of small aggregates of the excimer forming sensor molecules upon plastic deformation of polymer crystallites - can be exploited in a range of semicrystalline polymer hosts.

Macromol. Chem. Phys., DOI: 10.1002/macp.200900476

Other contributions to the special series on functional polymers can be found here.

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