Synthesis and characterization of bdmpp-dcbpy-Ru (II) complex for dye-sensitized solar cells [where bdmpp is 2,6-bis(3,5-dimethyl-N-pyrazoyl)pyridine and dcbpy is 2,2′-bipyridine-4,4′-dicarboxylic acid]

Synthesis, Characterization, and Sensitizing Properties of Heteroleptic RuII Complexes Based on 2,6‐Bis(1‐pyrazolyl)pyr­idine and 2,2′‐Bipyridine‐4,4′‐dicarboxylic Acid Ligands

“…Both complexes exhibited a broad and medium intensity absorption band at 1718 and 1717 cm –1 respectively which is assigned to the ν(C=O) stretching vibration. This band has a slightly higher frequency than that of [Ru(bdmpp)(dcbpyH 2 )Cl](PF 6 ) (1715 cm –1 )13b and [Ru(bdmpp)(dcbpyH 2 )(NCS)](PF 6 ) (1713 cm –1 ) respectively13a which may be attributed to the higher electron density at the Ru II center of complexes bearing the methyl‐substituted pyrazolyl‐pyridine ligand bdmpp. The bands at 1628 and 1627 cm –1 respectively, overlapping with the bpy bands3c,19 at 1609 and 1610 cm –1 , are tentatively assigned to the antisymmetric carboxylate vibration ν as (CO 2 – ) 22.…”

“…The molecular structure of 4· 7.5H 2 O · 0.5CH 3 CN was determined by single‐crystal X‐ray diffraction (vide infra). Also the corresponding [Ru(bdmpp)(dcbpyH 2 )Cl](PF 6 ) sensitizer 5 13b was characterized by X‐ray crystallography and the crystallographic data were compared with those of 4 .…”

Solid-state sensitized solar cells, using [Ru(dcbpyH2)2Cl2]·2H2O as the dye and PEO/titania/I−/I3− as the redox electrolyte

“…However, we proceeded in the synthesis of the above complex in order to achieve later a coordination of the Ru(II) metal with better chromophore groups and thus to obtain better photovoltaic properties. That is, the total electrical output of the cell doubles, when the complex [Ru(II)(dcbpyH 2 )(bdmpp)Cl] + (PF 6 ) − [28] was used, and becomes about five times higher for a solar cell using a similar dye, where the Cl moiety has been replaced by the monodentate thiocyanato ligand [29]. Even more spectacular are the results (15 times improvement) when comparing with the N3 dye that showed an unmatched photovoltaic performance so far [30].…”

Zinc(II) and Mercury(II) Complexes of Pyrazole‐Based NNN‐Type Ligands: Syntheses, X‐ray Structures, Thermal Analyses and DFT Studies

“…Over the last two decades, there has been an increasing interest in metal complexes of pyrazole‐derived ligands, mainly due to their potential application as building blocks for supramolecular assemblies,1 photovoltaic solar cell,2 their capabilities to serve as catalysts of organic reactions,3 spin‐crossover compounds,4,5 luminescence properties,6 and biological models 7. In this context, Zhao and co‐workers synthesized a new bis‐pyrazole derivative planar tridentate ligand 2,6‐bis(5‐phenyl‐1H‐pyrazol‐3‐yl)pyridine (H 2 BPPP) and its zinc and cadmium metal complexes and additionally investigated their luminescence properties.…”