254450-32-3

Upstream product

• 51595-55-2 4,4'-dinitro-2,2'-bipyridyl-N,N'-dioxide 
• 84175-09-7 4,4'-dibromo-2,2'-bipyridine N,N'-dioxide 
• 7275-43-6 [2,2']bipyridinyl 1,1'-dioxide 
• 18511-71-2 4,4'-dibromo-2,2'-bipyridine 
• 5720-07-0 4-methoxyphenylboronic acid 
• 366-18-7 [2,2]bipyridinyl 

Relevant academic research and scientific papers

Effect of electron-donor ancillary ligands on the heteroleptic ruthenium complexes: Synthesis, characterization, and application in high-performance dye-sensitized solar cells

Three heteroleptic ruthenium complexes, RC-15, RC-16 and RC-22, with sulfur- or oxygen-containing electron-donor, phenylpyridine-based ancillary ligands, are synthesized. The influence of the different electron donors - the acyclic electron donors methylt

Electronic optimization of heteroleptic Ru(II) bipyridine complexes by remote substituents: Synthesis, characterization, and application to dye-sensitized solar cells

We prepared a series of new heteroleptic ruthenium(II) complexes, Ru(NCS)2LL0 (3a-3e), where L is 4,40-di(hydroxycarbonyl)-2,20-bipyridine and L0 is 4,40-di(p-Xphenyl)- 2,20-pyridine (X = CN (a), F (b), H (c), OMe (d), and NMe2 (e)), in an attempt to explore the structure-activity relationships in their photophysical and electrochemical behavior and in their performance in dye-sensitized solar cells (DSSCs). When substituent X is changed from electron-donating NMe2 to electron-withdrawing CN, the absorption and emission maxima reveal systematic bathochromic shifts. The redox potentials of these dyes are also significantly influenced by X. The electronic properties of the dyes were theoretically analyzed using density functional theory calculations; the results show good correlations with the experimental results. The solar-cell performance of DSSCs based on dye-grafted nanocrystalline TiO2 using 3a-3e and standard N3 (bis[(4,40-carboxy-2,20-bipyridine)(thiocyanato)]ruthenium(II)) were compared, revealing substantial dependences on the dye structures, particularly on the remote substituent X. The 3d-based device showed the best performance: η = 8.30%, JSC = 16.0 mA 3 cm-2, VOC = 717 mV, and ff = 0.72. These values are better than N3-based device. 2011 American Chemical Society. 2011 American Chemical Society.