Details

Autor(en) / Beteiligte

• Bushuyev, Oleksandr S
• Tomberg, Anna
• Friščić, Tomislav
• Barrett, Christopher J

Titel

Shaping Crystals with Light: Crystal-to-Crystal Isomerization and Photomechanical Effect in Fluorinated Azobenzenes

Ist Teil von

• Journal of the American Chemical Society, 2013-08, Vol.135 (34), p.12556-12559

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Unusually long thermal half-lives of perhalogenated cis-azobenzenes enabled their structural characterization and the first evidence of a crystal-to-crystal cis → trans azobenzene isomerization. Irradiation with visible light transforms a perhalogenated cis-azobenzene single crystal into a polycrystalline aggregate of its trans-isomer in a photomechanical transformation that involves a significant, controllable, and thermally irreversible change of crystal shape. This is the first demonstration of permanent photomechanical modification of crystal shape in an azobenzene.