Electrochemiluminescence Properties of [Pt2Ag4(Ca CC6H4R)(8)](n) (R = CH3, n=1; R = H, n=1 and 2) with Amine (TPrA and DBAE) as the Coreactant and Determination of Sudan I
魏乔华;Wei, QH; Han, LJ; Jiang, Y; Lin, XX; Duan, YN; Chen, GN
刊名INORGANIC CHEMISTRY
2012
卷号51期号:20页码:11117-11125
学科分类Chemistry
DOI10.1021/ic3016657
英文摘要Two hexanuclear clusters, [Pt2Ag4(C CC6H4R)(8)] (R = CH3, 1; R = H, 2), together with dimer [Pt2Ag4(C CC6H5)(8)](2) (3), have been synthesized and characterized by elemental analyses, electrospray ionization mass spectrometry, and H-1 NMR spectroscopy and by X-ray crystallography for 1 and 3. A considerable enhancement of photoluminescence (PL) and a notable red shift in the emission maximum of 1 (lambda(max) 600 nm) relative to 2 (lambda(max) 545 nm) are observed. Electrogenerated chemiluminescence (ECL) of 1 and 2 in the absence or presence of coreactant tri-n-propylamine (TPrA) or 2(dibutylamino)ethanol (DBAE) at different working electrodes in different solvents (CH2Cl2, CH2ClCH2Cl, or CH3CN) has been studied. The ECL spectra are identical with the PL spectra, indicating that ECL emissions are also due to a MLM'CT [Pt(d)/pi (C CC6H4R-4) -> Pt(p(z))/Ag(sp)/pi* (C CC6H4R-4)] state modified by Pt center dot center dot center dot Ag and Ag center dot center dot center dot Ag contacts. ECL of 1-and 2/amine systems in CH2ClCH2Cl was produced at the potentials of 1.14-1.19 V vs SCE, notably negatively shifted by about 0.38 V compared to those of the Ru(bpy)(3)(2+)/amine system. In all cases, ECL quantum efficiencies of 2 are higher than those of 1 and on the same order of magnitude as that of the [Ru(bpy)(3)](PF6)(2)/amine system. It is noted that Sudan I tends to decrease the ECL intensity of the 1/DBAE system in CH2ClCH2Cl at a platinum working electrode. A new ECL method for the determination of Sudan I was developed with a linear range of 2.5 x 10(-5)-1.0 x 10(-3) M and a detection limit of 8.0 x 10(-6) M based on 3 times the ratio of signal-to-noise.
收录类别SCI
WOS记录号WOS:000309739100067
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224329
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
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魏乔华;Wei, QH,Han, LJ,Jiang, Y,et al. Electrochemiluminescence Properties of [Pt2Ag4(Ca CC6H4R)(8)](n) (R = CH3, n=1; R = H, n=1 and 2) with Amine (TPrA and DBAE) as the Coreactant and Determination of Sudan I[J]. INORGANIC CHEMISTRY,2012,51(20):11117-11125.
APA 魏乔华;Wei, QH,Han, LJ,Jiang, Y,Lin, XX,Duan, YN,&Chen, GN.(2012).Electrochemiluminescence Properties of [Pt2Ag4(Ca CC6H4R)(8)](n) (R = CH3, n=1; R = H, n=1 and 2) with Amine (TPrA and DBAE) as the Coreactant and Determination of Sudan I.INORGANIC CHEMISTRY,51(20),11117-11125.
MLA 魏乔华;Wei, QH,et al."Electrochemiluminescence Properties of [Pt2Ag4(Ca CC6H4R)(8)](n) (R = CH3, n=1; R = H, n=1 and 2) with Amine (TPrA and DBAE) as the Coreactant and Determination of Sudan I".INORGANIC CHEMISTRY 51.20(2012):11117-11125.
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