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[¦tü ¦tü·prīm ¦bī′pir·ə‚dēn]
(organic chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The assay has the ability to detect the tris(2,2'-bipyridyl) ruthenium complex, an electrochemically luminescent molecule.
The configuration process involves determining the optimal concentrations of coreactants, tris(2,2'-bipyridyl) ruthenium II ([Ru(bpy).sup.2+.sub.) and 2-(dibutylamino)-ethanol (DBAE), determining the voltage that provides the best ECL signal, and incorporating a solution-flow system.
Tetrahydrofuran (THF), 2-butanone (MEK), 1-propanol, methanol, ethanol (EtOH), acetonitrile (C[H.sub.3]CN), diethyl ether, deuterated solvents, benzophenone, MMA, 2-HEMA, allyl 2bromo-2-methylpropionate (ABIB), copper (I) bromide (CuBr), copper (I) chloride (CuCl), 2,2'-bipyridyl (Bpy), N,N,N',N',N"-pentamethyldiethylenetriamine (PMDETA), chromatographic stationary phases (neutral and basic aluminium oxide), phosphate buffer saline (PBS), BDP, and poly(2-hydroxyethyl methacrylate) (PHEMA, Mv ~ 20,000) were all purchased from Sigma-Aldrich.
Electrode Method Linear range (ppb) MgO-Nafion/GCE DP-ASV, ABS pH = 5.0 Cd(II): 1.1-23.6 Pb(II): 2.1-414 BiNPs/GCE DP-ASV, ABS pH = 4.5 5.0-60.0 AuNPs/GCE DP-ASV, ABS pH = 5.0 -- Padpa/Ru/GCE DP-ASV, HCl 0, 1 M -- Diatomite-MPTMS/GCE DP-ASV; ABS; pH = 4.5 Cd(II): 20-300 Pb(II): 20-150 Electrode LOD (ppb) References MgO-Nafion/GCE -- [2] BiNPs/GCE Cd(II): 0.4; Pb(II): 0.8 [25] AuNPs/GCE Cd(II): 20.7; Pb(II): 11.2 [26] Padpa/Ru/GCE Cd(II): 21.7; Pb(II): 9.8 [27] Diatomite-MPTMS/GCE Cd(II): 15.9; Pb(II): 6.9 This work Glassy carbon electrode (GCE); bismuth nanoparticles (BiNPs); gold nanoparticles (AuNPs); tris(2,2'-bipyridyl)Ru(II) (Padpa/Ru).
As a cobalt replacement, manganese requires the addition of a drier accelerator like 1,10-phenanthroline or 2,2'-bipyridyl chelating additives to approach the activity level of cobalt.
Barnett, "Tris(2,2'-bipyridyl)ruthenium(ii) chemiluminescence enhanced by silver nanoparticles," Chemical Communications, no.
A solution of 2,2'-bipyridyl (0.18 g, 1.15 mmol) in dichloromethane (~15mL) was added dropwise with constant stirring to a colloidal solution of [{(o-C[H.sub.3][C.sub.6][H.sub.4]O)C[S.sub.2]}2Zn] (0.50 g, 1.15 mmol) in dichloromethane (~15mL) at room temperature.
Tetraethyl orthosilicate (TEOS), tris(2,2'-bipyridyl)dichlororuthenium(II) hexahydrate (Rubpy dye), ammonium hydroxide (N[H.sub.4]OH), trimethoxysilyl-propyldiethylenetriamine (DETA), succinic anhydride, and bovine serum albumin (BSA) were purchased from Sigma-Aldrich.
For example, a [pi]-conjugated polymer bearing 2,2'-bipyridyl units was found to serve as a unique electrically conducting polymer complex with transition metals such as Ru, Ni, and Fe [6-8].
0.1 g/L ferrocyanide 3[H.sub.2]O 2,2'-Bipyridyl [C.sub.10][H.sub.8] 20 mg/L [N.sub.2] Disodium ethylene N[a.sub.2][H.sub.2] 15 g/L diamine EDTA.2[H.sub.2]O tetraacetate Solution B Copper sulfate CuS[O.sub.4] 25 g/L Nickel chloride Nic[l.sub.2] 4 g/L Formaldehyde HCHO 30 mL/L
Two types of classic dye molecules have been employed to construct the study model: an organometallic compound, tris(2,2'-bipyridyl) ruthenium(II) chloride hexahydrate (Ru[(bpy).sub.3.sup.2+]), and an organic compound, tetramethyl rhodamine (TMR).
New amperometric and potentiometric immunosensors based on gold nanoparticles/ Tris(2,2'-bipyridyl)cobalt(III) multilayer films for hepatitis B surface antigen determinations.