Some clock reactions such as Briggs -- Rauscher and BZ using the tris ( bipyridine ) ruthenium ( II ) chloride as catalyst can be excited into self-organising activity through the influence of light .
Some clock reactions such as Briggs -- Rauscher and BZ using the tris ( bipyridine ) ruthenium ( II ) chloride as catalyst can be made to show self-organising activity through the influence of light .