van Nguyen, Quyen; Tefashe, Ushula; Martin, Pascal; Della Rocca, Maria Luisa; Lafolet, Frederic; Lafarge, Philippe; McCreery, Richard L.; Lacroix, Jean-Christophe published the article 《Molecular Signature and Activationless Transport in Cobalt-Terpyridine-Based Molecular Junctions》. Keywords: cobalt terpyridine mol junction activationless transport.They researched the compound: Tris(2,2′-bipyridine)ruthenium bis(hexafluorophosphate)( cas:60804-74-2 ).Electric Literature of C30H24F12N6P2Ru. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:60804-74-2) here.
Cobalt terpyridine oligomers are compared with π-conjugated and ruthenium-centered layers in mol. junctions (MJs) with identical contacts. A wide range of layer thickness is investigated, and attenuation plots are obtained. Strong dependence of charge transport on mol. layers is found with a variation of four orders of magnitude of c.d. ( J) for different mols. and d = 7 nm. For a Ru(bpy)3 complex and bis-thienylbenzene MJs, the attenuation plot shows two different regions corresponding to two different dominant transport mechanisms. On the contrary Co(tpy)2 and viologen-based MJs show no transition thickness in the attenuation plot, indicating a possible change of mechanism with film thickness, and very low attenuation factors (β of 0.17 and 0.25 nm-1 from 2 to 14 nm, resp.). These β values indicate highly efficient long-range transport. This is attributed to the fact that the energy levels of the frontier orbital involved in transport are between, and thus almost in resonance with, the Fermi levels of the electrodes. Temperature-dependence measurements suggest that field ionization followed by multistep hopping and redox events can occur above 100 K, while the activationless region at low T indicates incoherent tunneling between redox sites with reorganization concerted with charge transfer.
There is still a lot of research devoted to this compound(SMILES：F[P-](F)(F)(F)(F)F.F[P-](F)(F)(F)(F)F.C1(C2=NC=CC=C2)=NC=CC=C1.C3(C4=NC=CC=C4)=NC=CC=C3.C5(C6=NC=CC=C6)=NC=CC=C5.[Ru+2])Electric Literature of C30H24F12N6P2Ru, and with the development of science, more effects of this compound(60804-74-2) can be discovered.
Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI