Probing the aqueous copper(ii) coordination chemistry of bifunctional chelating amino acid ligands with a luminescent ruthenium chromophore

Synthesis, Spectroscopic Properties and Electrochemical Oxidation of RuII‐Polypyridyl Complexes Attached to a Peptide Nucleic Acid Monomer Backbone

“…Thus, 3 was considered a suitable reactant for the attachment of an unprotected linker unit, 6-aminocaproic acid, to 1 to give 4. With modifications to reported methods, [41][42][43] including higher temperature (120°C) and longer reaction times (24 h), 4 was obtained in 68 % yield. The Ru II -PNA ester 5 was synthesised from 4 by the coupling method used to prepare compound 2.…”

“…Compound 1 was first converted into the Ru II -succinimide derivative [Ru(bpy) 2 (Mebpy-OSu)] 2+ (3), where Mebpy-OSu = 4Ј-methyl-2,2Ј-bipyridine-4-succinimide, as described previously. [40] Peek et al [40] and Geiβer et al [41][42][43] had attached unprotected amino acids to 3. Thus, 3 was considered a suitable reactant for the attachment of an unprotected linker unit, 6-aminocaproic acid, to 1 to give 4.…”

CuAAC-based assembly and characterization of a ruthenium–copper dyad containing a diimine–dioxime ligand framework

“…However, to the best of our knowledge, CuAAC has never been employed to assemble a Ru tris-diimine photosensitizer with a copper complex, although copper also displays interesting redox properties. Photoinduced electron transfers in heterodinuclear ruthenium copper complexes have for instance been exploited to develop luminescent probes,34–36 molecular switches,37 dye-sensitized solar cells38 and also for the photochemical reduction of nitrite 39. Recently, a RuCu dyad for the photocatalytic oxidation of organic substrates mediated by dioxygen activation has also been reported 40.…”

Dinuclear Ru–Cu Complexes: Electronic Characterisation and Application to Dye‐Sensitised Solar Cells

“…There are, however, several biological, sensor and electrochromic studies utilising complexes with both a ruthenium and copper moiety where the complexes have been fully characterised, showing evidence of communication between the ruthenium and copper centres. [19][20][21][22][23][24][25][26] …”