Review Article
Structure–Activity Relationship and Stimuli-Responsiveness Behavior of Metallosupramolecular Polymers
Figure 16
Mechanically induced metal exchange occurs in [Eu(BKB)1.5](ClO4)3 films. Photos of [Eu(BKB)1.5](ClO4)3 films before (a) and after (b) swelling in an iron solution in acetonitrile for 5 days. (c) The image depicted here is of a film that underwent the same process as in (b) and then subjected to ultrasonication for 45 min in iron solution. (d) Same process such in (c) with 60 min ultrasonication. (e) When ultrasonication was performed in iron solution, the emission spectra of the Eu(BKB)1.5)(ClO4)3 film changed over time using a fiber-optic cable and excited at 365 nm. (f) Image of a [Eu(BKB)1.5](ClO4)3 film (bottom) swollen in a Fe(ClO4)2 solution for 24 hr and then punctured with a needle. Reprinted with permission from ref. [104].
| (a) |
| (b) |
| (c) |
| (d) |
| (e) |
| (f) |