Photoisomerizations of a newly designed azobenzene derivative reversibly change its self-assembly in a solution to form twisted supramolecular nanofibers and amorphous aggregates, respectively. When irradiating the sample solution with audible sound, the former assembly exhibits a LD response due to its hydrodynamic orientation, but the latter one is LD silent, in the sound-induced fluid flows.

Chlorine, phosgene, and trichloroacetyl chloride are some of the complex mixture of multiple products that is obtained from the oxidative photodecomposition of tetrachloroethylene. These toxic but important reagents in organic synthesis can generated and used in situ for practical syntheses of ureas, amides, carbonates, esters, carbamates, enaminones, and organochlorides.

A photochromic supramolecular nanofibre, composed of a diarylethene derivative, exhibits hydrodynamic alignment upon exposure to the audible sound. The aligned nanofibre outputs linear dichroism (LD), whose wavelength region can be switched reversibly with UV and visible light.