Journal
ADVANCED MATERIALS
Volume 15, Issue 16, Pages 1335-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200305056
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Photoinduced reversible structural changes of anisotropic physical gels are applied to re-writable patterning (see Figure, a photo of a rewritable pattern). The change between a nematic gel and a cholesteric gel via a cholesteric liquid-crystalline sol state is induced by trans-cis photoisomerization of the azobenzene moieties in a chiral hydrogen-bonded gelator blended with a nematic liquid crystal.
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