fig7

Figure 7. (A) Synthetic route of the dual-functional metallacycle 24o from 22 and 23o. (B) Absorption and emission spectral changes of metallacycle 24o under 365 nm irradiation. (C) Light-controlled luminescence switching on a filter paper and in the poly (vinylidene fluoride) film. This figure is used with permission from Qin et al.[36].