Redox and photochemical behaviour of ruthenium(II) complexes with H2dcbpy ligand (H2dcbpy = 2,2′-bipyridine-4,4′-dicarboxylic acid)

Isomer Dependence of Efficiency and Charge Recombination in Dye‐Sensitized Solar Cells Using Ru Complex Dyes Bearing Halogen Substituents

“…This is consistent with the reduction of the H 2 -dcbpy ligand which has been previously shown to be chemically irreversible due to the loss of protons from the ligand. [16] That the lowest energy reduction process is due to the reduction of the H 2 -dcbpy ligand is consistent with the DFT calculations performed on these dyes which show the LUMO localised on this ligand. Due to the numerous reduction processes observed, further assignment of the peaks observed could not be reliably carried out.…”

The role of acid in the formation of hydrogen-bonded networks featuring 4,4′-dicarboxy-2,2′-bipyridine (H2dcbp): Synthesis, structural and magnetic characterisation of {[Cu(H2dcbp)Cl2]·H2O}2and [Cu(H2dcbp)(NO3)2(H2O)]

“…15 Their interests lay in the photophysical aspects of this compound as Ru(II)-H 2 dcbp complexes have been employed as dye sensitisers in the development of the Graetzel solar cell. 16 Their synthetic method involved hydrothermal reactions under acidic conditions and returned the above complex with the ligand in its protonated form.…”

One-pot syntheses, structures and properties of two novel 1-D copper complexes: [CuII2(Hbpdc)2Cl2]2·2H2O and CuI(H2bpdc)Cl (H2bpdc = 2,2′-bipyridyl-5,5′-dicarboxylic acid)

“…Currently, the most commonly used N-heterocyclic carboxylic ligands mainly include pyridinecarboxylic acids [3-5], terpyridinecarboxylic acids [6], imidazolecarboxylic acids [7,8], triazolecarboxylic acids [9]. Although 2,2′-bipyridyl-4,4′-dicarboxylic acid as a polydentate ligand has been extensively exploited [10][11][12][13][14][15][16][17], investigations on 2,2′-bipyridyl-5,5′-dicarboxylic acid (H 2 bpdc) as a multifunctional ligand remain largely unexplored [18][19][20][21][22][23][24][25]. Obviously, most of reported metal complexes are the noble metal derivatives, which provides us an excellent opportunity for exploring the reaction of the first-row transition-metal/lanthanide cations with H 2 bpdc based on the following considerations: (a) the flexible multifunctional H 2 bpdc with N and O donor atoms can provide the large possibility for constructing novel structures; (b) H 2 bpdc can be deprotonated to generate Hbpdc − and bpdc 2− , allowing various acidity-dependent coordination modes; and (c) first-row transition-metal cations have a strong affinity to both N-and O-donors while lanthanide cations prefer O-donors to N-donors according to the hard-soft acid base rule.…”