A new photo-responsive organogel containing benzophenone group

Benzophenone group was introduced into the gel system in order to fabricate a new ALS2 organogel which was photo-responsive. In the gel state with mixed solvent of acetone and water (5%), helical fibres were formed. The light control on the morphological change from fibres to core–shell spheres was followed by transmission electron microscope, which supplied a new paradigm for the morphology control triggered by stimulus. Moreover, the gel could serve as light absorbent without being mixed with polymer.