NDLI: Electrogenerated Chemiluminescence Sensor Based on Tris(2,2'-bipyridyl) ruthenium(II) Immobilized in the Composite Film of Multi-walled Carbon Nanotube/Sol-gel Zinc oxide/Nafion

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Electrogenerated Chemiluminescence Sensor Based on Tris(2,2'-bipyridyl) ruthenium(II) Immobilized in the Composite Film of Multi-walled Carbon Nanotube/Sol-gel Zinc oxide/Nafion

Content Provider	Semantic Scholar
Author	Choi, Eun Jung Kang, Chang Hoon Choi, Han Nim Lee, Won-Yong
Copyright Year	2009
Abstract	A composite film of multi-walled carbon nanotube (MWCNT)/sol-gel-derived zinc oxide(ZnO)/Nafion has been utilized as an efficient immobilization matrix for the construction of a highly sensitive and stable tris(2,2'-bipyridyl) ruthenium(II) (Ru(bpy) 3 2+ ) electrogenerated chemiluminescence (ECL) sensor. The electrochemical and ECL behaviors of Ru(bpy) 3 2+ ion-exchanged into the composite film were strongly dependent upon the sol-gel preparation condition, the amount of MWCNT incorporated into the ZnO/Nafion composite film, and the buffer solution pH. The synergistic effect of MWCNTs and ZnO in the composite films increased not only the sensitivity but also the long-term stability of the ECL sensor. The present ECL sensor based on the MWCNT/ZnO/Nafion gave a linear response (R 2 = 0.999) for tripropylamine concentration from 500 nM to 1.0 mM with a remarkable detection limit (S/N = 3) of 15 nM. The present ECL sensor showed outstanding long-term stability (94% initial signal retained for 5 weeks). Since the present ECL sensor exhibits large response towards NADH, it could be applied as a transduction platform for the ECL biosensor in which the NADH is produced from the dehydrogenase-based enzymatic reaction in the presence of NAD + cofactor.
Starting Page	2387
Ending Page	2392
Page Count	6
File Format	PDF HTM / HTML
DOI	10.5012/bkcs.2009.30.10.2387
Volume Number	30
Alternate Webpage(s)	http://ocean.kisti.re.kr/downfile/volume/chemical/JCGMCS/2009/v30n10/JCGMCS_2009_v30n10_2387.pdf
Alternate Webpage(s)	https://doi.org/10.5012/bkcs.2009.30.10.2387
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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