Nafion-stabilized magnetic nanoparticles (Fe3O4) for [Ru(bpy)3]2+(bpy = bipyridine) electrogenerated chemiluminescence sensor.
نویسندگان
چکیده
A highly sensitive and stable [Ru(bpy)3]2+ ECL sensor has been fabricated based on the multilayer films of Nafion-stabilized magnetic nanoparticles (Nafion/Fe3O4) formed on a platinum electrode surface by means of an external magnet.
منابع مشابه
Generation by Electron Transfer of an Emitting State Not Observed by Photoexcitation in a Linked Ru(bpy)3-Methyl Viologen
The molecule in which a methyl viologen (MV2+) moiety is coupled through a three-carbon chain to one bipyridine in Ru(bpy)3 (bpy ) 2,2′bipyrine), [Ru(bpy)2(4-(2-(1′-methyl-4-4′-bipyridinediium-1-yl)propyl)-4′-methyl2,2′-bipyridine), abbreviated Ru(bpy)2(MV-bpy)], does not emit upon photoexcitation because of rapid quenching of the MLCT state by the MV2+. The integrated steady-state photoemissio...
متن کاملTris(2,2′-bipyridyl)ruthenium(II) electrogenerated chemiluminescence sensor based on carbon nantube dispersed in sol–gel-derived titania–Nafion composite films
A highly sensitive and stable tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)3) electrogenerated chemiluminescence (ECL) sensor was developed based on carbon nanotube (CNT) dispersed in mesoporous composite films of sol–gel titania and perfluorosulfonated ionomer (Nafion). Single-wall (SWCNT) and multi-wall carbon nanotubes (MWCNT) can be easily dispersed in the titania–Nafion composite solution. Th...
متن کاملElectrogenerated chemiluminescence Part 54. Electrogenerated chemiluminescence of ruthenium( II) 4,4’-diphenyl-2,2’-bipyridine and ruthenium( II) 4,7-diphenyl-l,lO-phenanthroline systems in aqueous and acetonitrile solutions
The electrogenerated chemiluminescence (ECL) of Ru(dp-bpy):+ (dp-bpy = 4,4’-diphenyl-2,2’bipyridine) and Ru(dp-phen):+ (dp-phen = 4,7-diphenyl-l,lO-phenanthroline) in acetonitrile and aqueous solutions was studied. The diphenyl-substituted compounds produced a more intense emission than the nonsubstituted Ru(bpy):+ Ru(dp-phen):+ m acetonitrile. The ECL efficiencies, dECL, of Ru(dp-bpy):+ and we...
متن کاملElectrochemistry and electrogenerated chemiluminescence of a thin solid film of a hydrophobic tris(bipyridine) Ru(II) derivative in contact with an aqueous solution
The present study shows the electrochemistry, electrogenerated chemiluminescence and solid-state electroluminescence of [Ru(bpy)2(4,4¢-(CH3(CH2)12COO)bpy)](ClO4)2 as thin film deposited onto ITO. Cyclic voltammetry in aqueous solution of the Ru-LC film shows two reversible waves with peak potentials at about 1.27 V and )0.97 V. The apparent diffusion coefficient of the slowest species was found...
متن کاملElectrogenerated chemiluminescence (ECL) 79. Reductive-oxidation ECL of tris(2,2′-bipyridine)ruthenium(II) using hydrogen peroxide as a coreactant in pH 7.5 phosphate buffer solution
Hydrogen peroxide (H2O2) can be used as a coreactant to generate reductive-oxidation ECL of Tris(2,2′-bipyridine)ruthenium(II), Ru(bpy)3 (bpy = 2,2′-bipyridine), in pH 7.5 phosphate buffer solution (PBS). Although Ru(bpy)3 is adsorbed and precipitated on the electrode upon reduction of Ru(bpy)3 in aqueous solutions, ECL can still be generated and scanning electrochemical microscopy (SECM) e r o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chemical communications
دوره 23 شماره
صفحات -
تاریخ انتشار 2005