Structure–Activity Relationship and Stimuli-Responsiveness Behavior of Metallosupramolecular Polymers

Figure 9

Emission spectra of solid-state (a) polymer-Eu³⁺, (b) polymer-Tb³⁺, (c) a mixture of 1 : 1 polymer-Eu³⁺ and polymer-Tb³⁺, (d) a polymer-Eu³⁺/Tb³⁺ alloy. Spectra d showed only one new emission band at 533 nm, which was assigned to metastable Eu²⁺. Excitation at 350 nm is required. Reprinted with permission from ref. [90].

(a)

(b)

(c)

(d)