Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 2, Pages 691-698Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm14017e
Keywords
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Funding
- Air Force Office of Scientific Research (AFOSR)
- Materials and Manufacturing Directorate of the Air Force Research Laboratory
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Azobenzene-functionalized polymeric materials have proven capable of shape adaptive responses when irradiated with light. This work focuses on isolating the fundamental differences between the photogenerated mechanical output of glassy, polydomain azobenzene liquid crystal polymer networks (azo-LCN) upon exposure to either UV and blue-green irradiation. Profound differences in the fundamental photochemical mechanism are identified through spectroscopic examination of representative materials before and after irradiation with UV or blue-green light. The photomechanical response is further elucidated in structure-property examination to ascertain the role of crosslink density, azobenzene concentration, and azobenzene connectivity (crosslinked or pendant) on the photomechanical output.
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