phenanthroline


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phenanthroline

[fə′nan·thrə‚lēn]
(organic chemistry)
C12H8N2 Any of three nitrogen bases related to phenanthrene; the ortho form is an oxidation-reduction indicator, turning faint blue when oxidized.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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An ethanolic solution of phenanthroline monohydrate (Phen) (1 mmol, 0.199 g) was refluxed with copper salt (1 mmol) in ethanol under stirring for 30 min.
89% for males using SBT1; chymotrypsin activity was inhibited by 56% for females and 61% for males when using TPCK; while metal protease activity was inhibited by 85% for females and 95% for males using EDTA, and 75% for females and 83% for males when using phenanthroline; finally, protease activity was inhibited in 62% for females and 75% for males using ovalbumin (Fig.
Twenty-one ligands were modelled which comprise fifteen models of bis-pyrazole, three models of bipyridine (bpyr), and three models of phenanthroline (phn) (Figure 1).
The ruthenium complexes investigated, shown in Figure 1, were [[Ru[(bpy).sub.2]L].sup.2+], [[Ru[(phen).sub.2]L].sup.2+], and [[Ru[(biq).sub.2]L].sup.2+], where L is the main ligand with differing functional group terminations (L = 2-(4-formylphenyl)imidazo[4,5-f][1,10] phenanthroline (p-FPIP), 2-(4-nitrophenyl)imidazo[4,5-f] [1,10]phenanthroline (p-NPIP), 2-(4-bromophenyl)imidazo [4,5-f][1,10]phenanthroline (p-BPIP), 2-(4-cyanophenyl)imidazo [4,5-f][1,10]phenanthroline (p-CPIP), 2-(3-cyanophenyl) imidazo[4,5-f][1,10]phenanthroline (m-CPIP), and 2-(2cyanophenyl)imidazo[4,5-f][1,10] phenanthroline (o-CPIP).
The four different molecular weight polysaccharide solutions (60 [micro]g/mL, 1 mL) were incubated with phenanthroline (2.5 mmol/L, 1mL), ferrous sulfate (2.5 mmol/L, 1 mL), and hydrogen peroxide (20 mmol/L, 1 mL) in phosphate buffer (20 mmol/L, 1 mL, pH 7.4) for 90 min at 37[degrees]C.
The absorption band observed at around 330-350 nm is attributed to ligand-centered charge transfer including n [right arrow] [[pi].sup.*] transitions of phenanthroline. Besides a moderate broadband found at 385-410 nm with absorption maxima (Amax) at 406 nm ([C.sub.1]), 400-410 nm ([C.sub.2]), 385 nm ([C.sub.3]), and 405 nm ([C.sub.4]) were attributed to the metal ligand charge transfer (MLCT) transitions in complexes.
Synthesis and photoluminescence properties of asymmetrical europium(III) complexes involving carbazole, phenanthroline and bathophenanthroline units.
EPM/EPI Microdilution Test: EDTA Phenanthroline + MEM/IPM Microdilution Test (16)
The total and ferrous iron concentrations in the solution were measured by the phenanthroline method [23].
After diluting the above composition to a proper concentration, phenanthroline colourimetry was utilized to measure the Fe concentration by ultra-micro-spectrophotometer (Thermo Scientific Inc., Waltham, MA, USA) at wavelength of 510 nm.
Apak, "Comparative evaluation of Fe(III) reducingpower-based antioxidant capacity assays in the presence of phenanthroline, batho-phenanthroline, tripyridyltriazine (FRAP), and ferricyanide reagents," Talanta, vol.
Briefly, freshly prepared FRAP reagent consisted of 0.1 M acetate buffer (pH 4.0), 0.5% (w/v) 1, 10 phenanthroline in 10% methanol and 0.3 mM FeCl3 in a ratio of 1:1:1 (v/v/v).