典型文献
Effect of Ionic Strength on the Electrochemiluminescence Generation by Tris(2,2'-bipyridyl)ruthenium(Ⅱ)/Tri-n-propylamine
文献摘要:
E lectrochemiluminescence(ECL)is a powerful transduction technique used in biosensing and in vitro diagnosis,while themechanism of ECL generation is complicated and affected by various factors.Herein the effect of ionic strength on ECL generation by the classical tris(2,2'-bipyridyl)ruthenium(Ⅱ)[Ru(bpy)32+]/tri-n-propylamine(TPrA)system was investigated.It is clear that the ECL intensity decreases significantly with the increase of ionic strength,most likely arising from the reduced deprotonation rate of TPrA+.We further combined microtube electrode(MTE)with ECL microscopy to unravel the evolution of ECL layer with the variation of ionic strength.At a low concentration of Ru(bpy)32+,the thickness of ECL layer(TEL)nearly kept unchanged with the ionic strength,indicating the surface-confined ECL generation is dominated by the oxidative-reduction route.While at a high concentration of Ru(bpy)32+,ECL generation is dominated by the catalytic route and TEL increases remarkably with the increase of ionic strength,because of the extended diffusion length of Ru(bpy)33+at a reduced concentration of TPrA.
文献关键词:
中图分类号:
作者姓名:
HU Shifan;WANG Yafeng;SU Bin
作者机构:
Institute of Analytical Chemistry,Department of Chemistry,Key Laboratory of Excited-State Materials of Zhejiang Province,Zhejiang University,Hangzhou 310058,P.R.China
文献出处:
引用格式:
[1]HU Shifan;WANG Yafeng;SU Bin-.Effect of Ionic Strength on the Electrochemiluminescence Generation by Tris(2,2'-bipyridyl)ruthenium(Ⅱ)/Tri-n-propylamine)[J].高等学校化学研究(英文版),2022(03):816-822
A类:
lectrochemiluminescence,themechanism,TPrA,TPrA+,MTE,33+at
B类:
Effect,Ionic,Strength,Electrochemiluminescence,Generation,by,Tris,bipyridyl,ruthenium,propylamine,ECL,powerful,transduction,technique,used,biosensing,vitro,diagnosis,while,generation,complicated,affected,various,factors,Herein,effect,ionic,strength,classical,tris,Ru,bpy,32+,system,was,investigated,It,clear,that,intensity,decreases,significantly,most,likely,arising,from,reduced,deprotonation,rate,We,further,combined,microtube,electrode,microscopy,unravel,evolution,layer,variation,At,low,concentration,thickness,TEL,nearly,kept,unchanged,indicating,surface,confined,dominated,oxidative,reduction,route,While,high,catalytic,increases,remarkably,because,extended,diffusion,length
AB值:
0.493329
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