Functionalized multiwall carbon nanotubes combined with bis(2,2′-bipyridine)-5-amino-1,10-phenanthr.pdf

Available online at Sensors and Actuators B 129 (2008) 758–763 Functionalized multiwall carbon nanotubes combined with bis(2,2-bipyridine)-5-amino-1,10-phenanthroline ruthenium(II) as an electrochemiluminescence sensor Ying Tao a , Zhi-Jie Lin a , Xiao-Mei Chen a , Xiao-Li Huang a , Munetaka Oyama c , Xi Chen a,b,∗, Xiao-Ru Wang a a Department of Chemistry and Key Laboratory of Analytical Sciences of the Ministry of Education, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China b State Key Laboratory of Marine Environmental Science, Xiamen University, 361005, China c Division of Research Initiatives, International Innovation Center, Kyoto University, Nishikyo-ku, Kyoto 615-8520, Japan Received 26 July 2007; received in revised form 12 September 2007; accepted 13 September 2007 Available online 19 September 2007 Abstract An effective electrochemiluminescence (ECL) sensor was developed by combining bis(2,2 -bipyridine)-5-amino-1,10-phenanthroline ruthe- nium(II) [Ru(bpy) (5-NH -1,10-phen)2+ ] with functionalized carbon nanotubes (FCNTs) coated on a glassy carbon electrode. Treatment with a nitric 2 2 acid and sulfuric acid mixture (1:3, v/v) led to multiwall carbon nanotubes terminated