135822-72-9Relevant articles and documents
Colorimetric detection of in situ metal acetates and fluorides by a bipyridyl-linked Schiff base
Suganya, Sivalingam,Zo, Hye Jin,Park, Jong S.,Velmathi, Sivan
, p. 689 - 695 (2014)
A new bipyridyl moiety linked Schiff base (bipy-1) was developed and showed selective recognition of dimethyl sulphoxide solution of tetrabutyl ammonium salt of F- ion with absorbance at 529 nm and interesting binding of aqueous Co, Ni, and Cu acetates/fluorides, as confirmed by distinct color changes from fluorescent green to pink or orange with absorbance at 480-510 nm. However, in situ formation of Co, Ni, and Cu acetates/fluorides also was found to be able to respond to similar color and absorption changes.
Unusual chemoselective addition of diisopropylzinc to 2,2′-bipyridine-5,5′-dicarbonyl compounds in the 2-position and autoxidative reconversion with carbon-carbon bond cleavage
Tanji, Shigehisa,Shibata, Takanori,Sato, Itaru,Soai, Kenso
, p. 217 - 218 (2001)
The chemoselective addition of diisopropylzinc to 2,2′-bipyridine-5,5′-dicarbonyl compounds in the 2-position and autoxidative reconversion with carbon-carbon bond cleavage was presented. It was shown that i-Pr2Zn do not add to the aldehyde moiety but to the 2-position of the bipyridine to afford possessing a quaternary carbon atom in a yield of 69%. It was found that the i-Pr2Zn does not add to the aldehyde but to the 2-position of the bipyridine ring by destroying the aromaticity of the pyridine ring.
Photocurrent response of bipyridine containing poly(p-phenylene-vinylene) derivatives
Narayan,Geetha,Nakmanovich,Ehrenfreund,Eichen
, p. 7671 - 7677 (2001)
The photoinduced charge separation and subsequent transport under an external electric field is studied in the family of poly[bipyridine/(p-phenylene-vinylene)n] derivatives having n = 0, 1, and 3, respectively, p-phenylene-vinylene subunits separating the bipyridylene vinylene skeleton. Steady-state photocurrent of the polymers is studied in sandwich and surface configurations and correlated with transient photocurrent measurements. The results reveal the facile electric-field-induced separation of the electron-hole pair for n = 1 samples relative to n = 3 samples. We also estimate the energy barriers involved in the process of carrier generation and transport in these systems.
Designed synthesis of porphyrin-based two-dimensional covalent organic frameworks with highly ordered structures
Chen, Xiong,Gao, Jia,Jiang, Donglin
, p. 1257 - 1259 (2015)
Porphyrins are representative functional π-systems; synthesizing their highly ordered structures is an established goal in chemistry. Here, we report the designed synthesis of a series of porphyrin-based covalent organic frameworks with highly ordered structures through polycondensation. The porphyrinbased frameworks exhibited high crystallinity, high porosity, and extended π-conjugation over the polyporphyrin sheets.
Phosphonate-Mediated Immobilization of Rhodium/Bipyridine Hydrogenation Catalysts
Forato, Florian,Belhboub, Anouar,Monot, Julien,Petit, Marc,Benoit, Roland,Sarou-Kanian, Vincent,Fayon, Franck,Jacquemin, Denis,Queffelec, Clémence,Bujoli, Bruno
, p. 2457 - 2465 (2018/02/06)
RhL2 complexes of phosphonate-derivatized 2,2′-bipyridine (bpy) ligands L were immobilized on titanium oxide particles generated in situ. Depending on the structure of the bipy ligand—number of tethers (1 or 2) to which the phosphonate end groups are attached and their location on the 2,2′-bipyridine backbone (4,4′-, 5,5′-, or 6,6′-positions)—the resulting supported catalysts showed comparable chemoselectivity but different kinetics for the hydrogenation of 6-methyl-5-hepten-2-one under hydrogen pressure. Characterization of the six supported catalysts suggested that the intrinsic geometry of each of the phosphonate-derivatized 2,2′-bipyridines leads to supported catalysts with different microstructures and different arrangements of the RhL2 species at the surface of the solid, which thereby affect their reactivity.