Two new 2,2'-bipyridine (bpy) based ligands with ancillary BODIPY chromophores attached at the 4 and 4'-positions were prepared and characterized, which vary in the substitution pattern about the BODIPY periphery by either excluding (BB1) or including (BB2) a β-alkyl substituent. Both absorb strongly throughout the visible region and are strongly emissive. The basic photophysics and electrochem...

We report the synthesis and the photophysical properties of UV light-harvesting arrays constructed around a [Ru(bpy)3] core (bpy ) 2,2′-bipyridine) bearing one and three pyrenyl units in the periphery. The free ligand containing the pyrenyl unit, 4-methyl-4′-(2-hydroxyethylpyrenyl)-2,2′-bipyridine, displays an intense emission band centered near 400 nm with a lifetime of 264 ns, characteristic ...

A novel luminescent inclusion complex, {[(C4AS)(2)Ag(3)(mu-2,2'-bpy)(2)(2,2'-bpy)(2)] [Ag(5)(mu-2,2'-bpy)(4)(2,2'-bpy)(4)].20H(2)O}(n) () (2,2'-bpy = 2,2'-bipyridine, C4AS = p-sulfonatocalix[4]arene), with an unusual framework is reported: the parallel 1D infinite silver(i) chains separated by the water belts reside in the big cavities of the p-sulfonatocalix[4]arene-trisilver blocks.

ABSTRACT A series of novel phenylsulfonyl- and 4-aminophenylsulfonyl-carboximidamides were synthesized by condensation of sulfonamides with heterocyclic methyl carbimidates obtained from heterocyclic carbonitriles and used 'at its inception.' The molecular structure of the obtained compounds is discussed. Compounds possessing heterocyclic systems with a nitrogen atom in the α position to the fu...

The complex [Ru(bpy)2L] , where bpy = 2,2’-bipyridine, L = 4-(phenylethynyl)-2,2’-bipyridine, was prepared in its racemic and resolved forms (and . The phenylethynyl unit on the bipyridine for the complex acts as a binding site for -cyclodextrin in water (1:1 complex, K = 3390 M) or -cyclodextrin (2:1 complex, K1 = 887 M , K2 = 8070 M ). The presence of the cyclodextrin provides partial p...

The syntheses of five homoleptic copper(I) complexes [CuL2][PF6] are described in which L is a 4,4'-di(4-bromophenyl)-6,6'-dialkyl-2,2'-bipyridine ligand (compounds 1-4 with methyl, (n)butyl, (iso)butyl and hexyl substituents, respectively) or 4,4'-di(4-bromophenyl)-6,6'-diphenyl-2,2'-bipyridine (5). The new ligands 2-5 and copper(I) complexes [CuL2][PF6] (L = 1-5) have been fully characterized...

in this paper, 4,4ʹ-bipyridinium dichloride  supported sba-15 (sba@bipy2+ 2cl-) was used for the synthesis of dihydropyrimidinones. the synthesized catalyst was characterized by ft-ir spectroscopy, scanning electron microscopy (sem), transmission electron microscopy (tem) and thermogravimetric analysis (tga). this nanocomposite was shown to be an efficient heterogeneous catalyst for the synthes...

The development of resistance poses a serious problem in the therapy cancer due to necessity multiple-drug and unlimited treatment affected patients. In chronic myeloid leukemia (CML), introduction imatinib has revolutionized therapy. persistence an untreatable stem cell pool other resistance-causing factors, however, also impede cure this malignancy. New therapeutic approaches are therefore es...

tow new compound of type [(chelate)2cu-oh-cu(chelate)2] x3.nh2o, where chelate=1,10-phenanthroline; x=cl¯(n=3.5) and chelate=4,4'-dimethyl-2,2'-bipyridine;  (n=5) have been synthesized and their properties investigated. the complexes show room temperature magnetic moment order of 1.0 b.m. per copper atom. the x-band esr spectrum of powdered samples at room temperature shows typical dm=1 transit...

The composition of a dynamic mixture of similar 2,2'-bipyridine complexes of iron(II) bearing either an amide (5-benzylamido-2,2'-bipyridine and 5-(2-methoxyethane)amido-2,2'-bipyridine) or an ester (2,2'-bipyridine-5-carboxylic acid benzylester and 2,2'-bipyridine-5-carboxylic acid 2-methoxyethane ester) side chain have been evaluated by electrospray mass spectroscopy in acetonitrile. The time...