Dinuclear 2,4-di(pyridin-2-yl)-pyrimidine based ruthenium photosensitizers for hydrogen photo-evolution under red light

Abstract

In this study, we report two dinuclear Ru(II) complexes C1 and C2 and compare them to their mononuclear analogues Ref1 and Ref2. The dinuclear species exhibit a much stronger absorption,...

Research Progress of Bis(terpyridine)-Ruthenium(II) Complexes★

“…除此之 外, 一般在-2.0～-0.5 V 之间还存在多个准可逆的氧 化还原峰, 对应于三联吡啶配体的氧化还原 [75,[117][118][119] . [90,[120][121][122][123][124] .…”

Spectro-electrochemical study of iron and ruthenium bis-terpyridine complexes with methyl viologen-like subunits as models for supramolecular polymers

“…37 We previously showed how the photophysical and electrochemical properties of ruthenium complexes are affected when going from mononuclear to dinuclear complexes. 31 While small changes in both emission properties and reduction and oxidation potentials were found between the mononuclear and dinuclear complexes, no strong coupling was observed between the metal centers in the dinuclear complexes. Similar observations were made by Bera et al when stepwise assembling MEPEs with different transition metals.…”

“…22,[26][27][28][29] When two terpyridines are rigidly connected, forming ditopic bis(terpyridine) ligands, linear rod-like metallo-supramolecular structures can be formed. 22,[30][31][32] The resulting metallo-supramolecular polyelectrolytes (MEPE) have a variety of attractive properties concerning electrochromism, 33 spin-crossover, 34 rheology, 35,36 and cell differentiation. 37 We previously showed how the photophysical and electrochemical properties of ruthenium complexes are affected when going from mononuclear to dinuclear complexes.…”

“…22,26–29 When two terpyridines are rigidly connected, forming ditopic bis(terpyridine) ligands, linear rod-like metallo-supramolecular structures can be formed. 22,30–32 The resulting metallo-supramolecular polyelectrolytes (MEPE) have a variety of attractive properties concerning electrochromism, 33 spin-crossover, 34 rheology, 35,36 and cell differentiation. 37…”

Photophysical Studies of Helicate and Mesocate Double-Stranded Dinuclear Ru(II) Complexes

“…Ultrafast photophysical studies of multinuclear ruthenium compounds have received less attention compared to their mononuclear counterparts, however, these systems are seeing renewed interest as advances in ligand engineering have afforded dinuclear complexes with specific DNA selectivity, and pH sensitivity, − which are desirable properties for biomedical applications. , In cases where the two ruthenium atoms are linked by a conjugated bridge, these complexes may exhibit electronic coupling between the two centers, acting like molecular “wires”, with applications that may include light-harvesting materials. − Dinuclear complexes with nonconjugated bridges between metal centers can also be designed, but they are not widely studied regarding how their structural properties impact their photophysics.…”