Heteroleptic/Heterometallic Sierpinski Triangle with Room Temperature Fluorescence Emission and Photocatalytic Amine Oxidation Activity

As a result of their optical and redox properties, bipyridyl (bpy) and terpyridyl (tpy) ruthenium complexes play vital roles in numerous domains. Herein, the design and synthesis of two bipyridyl and terpyridyl ruthenium(II) building units L1 and L2 are explained. A [Ru(bpy)(3)](2+) functionalized triangle S1 and a Sierpin ' ski triangle S2 were synthesized in almost quantitative yields by the self-assembly of L1 with Zn2+ ions and by the heteroleptic self-assembly of L1 and L2 with Zn2+ ions, respectively. The Sierpin ' ski triangle S2 contains the coordination metals [Ru(bpy)(3)](2+), [Ru(tpy)(2)](2+), and [Zn(tpy)(2)](2+). According to research on the catalytic activity of amine oxidation on supramolecules S1 and S2, the benzylamine substrates were nearly entirely transformed to N-benzylidenebenzylamine derivatives after 1 h under a Xe lamp. Furthermore, the observed ruthenium-containing terpyridyl supramolecule S2 maintains high luminous performance at ambient temperature. This discovery opens up new possibilities for the rational molecular design of terpyridyl ruthenium fluorescent materials and catalytic functional materials.

Automated summary

The design and synthesis of two bipyridyl and terpyridyl ruthenium(II) building units L1 and L2 were explained, and two different triangle self-assembled supramolecules S1 and S2 were successfully synthesized. The study of S2 showed that it maintains high luminous performance at ambient temperature, opening up new possibilities for the rational molecular design of terpyridyl ruthenium fluorescent materials and catalytic functional materials.