- Phosphonate-functionalized heteroleptic ruthenium(II) bis(2,2′: 6′,2″-terpyridine) complexes
-
The heteroleptic complexes [Ru(1)(4)][PF6]2, [Ru(2)(4)][PF6]2, [Ru(Phtpy)(4)][PF6] 2, and [Ru(pytpy)(4)][PF6]2 (Phtpy = 4′-phenyl-2,2′:6′,2″-terpyridine, pytpy = 4′-(4-pyridyl)-2,2′:6′,2″-terpyridine, 1 and 2 = 4-methyl ester substituted derivatives of Phtpy and pytpy, 4 = ethyl 2,2′:6′,2″-terpyridine-4′-phosphonate) have been prepared. The single crystal structure of ligand 1 (1 = methyl 4-carboxy-4′-phenyl-2,2′:6′,2″-terpyridine) is reported. The introduction of the 4-methyl ester group causes a small red shift in the MLCT band of the ruthenium(II) complexes and a small shift to a more positive potential for the Ru2+/Ru3+ couple. The new complexes should serve as a useful starting point for development of ruthenium(II) dyes suited for sensitization of p-type semiconductors.
- Constable, Edwin C.,Housecroft, Catherine E.,Smidkova, Marketa,Zampese, Jennifer A.
-
-
Read Online
- Multi-Readout Logic Gate for the Selective Detection of Metal Ions at the Parts Per Billion Level
-
Optical sensors utilizing visual responses for the identification of metal ions require reliable molecular systems able to operate selectively in multicomponent solutions. Herein, we report a water-soluble terpyridyl-based ligand that demonstrates effective quantification of parts per billion to parts per million levels of Fe2+, Fe3+, Zn2+, and Ru3+. Whereas the Fe3+and Ru3+ions were found to bind to the ligand to form a monometallic complex, a 2:1 ligand/metal binding stoichiometry was found for the Zn2+and Fe2+complexes. The corresponding metal-binding events were directly translated into distinct colorimetric and spectroscopic logic outputs. Applying molecular logic (Boolean logic operations) to describe these binding events, selective discrimination between the ions was demonstrated.
- Laschuk, Nadia O.,Ebralidze, Iraklii I.,Spasyuk, Denis,Zenkina, Olena V.
-
supporting information
p. 3530 - 3535
(2016/08/09)
-
- Preparation of Phosphonated Polypyridyl Ligands to anchor Transition-metal Complexes on Oxide Surfaces: Application for the Conversion of Light to Electricity with Nanocrystalline TiO2 Films
-
To anchor transition-metal compounds onto metal oxide surfaces 2,2':6',2''-terpyridine-4'-phosphonic acid (4'-PO3H2-terpy) is synthesized; strong surface adhesion as well as efficient charge-transfer sensitization of nanocrystalline TiO2 films has been observed with a ruthenium complex involving this ligand.
- Pechy, Peter,Rotzinger, Francois P.,Nazeeruddin, Mohammed Khaja,Kohle, Oliver,Zakeeruddin, Shaik Mohammed,et al.
-
-
