Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 40, Pages 15810-15813Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja2043276
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Funding
- NSFC [50873028, 20825101, 21134003]
- DPHE [20100071110014]
- NHTPC [2011AA03A407]
- Ministry of Science and Technology of China [2009CB930400]
- Shanghai Science and Technology Commission [11QH1400400, 11XD1400200, 1052nm03400]
- [IRT0911]
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When upconversion nanophosphors were incorporated into an azotolane-containing cross-linked liquid-crystal polymer film, the resulting composite film generated fast bending upon exposure to continuous-wave near-IR light at 980 nm. This occurs because the upconversion luminescence of the nanophosphors leads to trans-cis photoisomerization of the azotolane units and an alignment change of the mesogens. The bent film completely reverted to the initial flat state after the light source was removed.
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