A solid-state electrochemiluminescence sensing platform for detection of catechol based on novel luminescent composite nanofibers
A solid-state electrochemiluminescence (ECL) sensing platform based on the novel luminescent composite nanofibers for detection of catechol has been developed. The carboxylated multi-walled carbon nanotubes (MWNTs) and ruthenium(II) tris-(bipyridine) (Ru(bpy)32+) doped nylon 6 (PA6) luminescent comp...
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Veröffentlicht in: | Talanta (Oxford) 2013-03, Vol.107, p.127-132 |
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Sprache: | eng |
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Zusammenfassung: | A solid-state electrochemiluminescence (ECL) sensing platform based on the novel luminescent composite nanofibers for detection of catechol has been developed. The carboxylated multi-walled carbon nanotubes (MWNTs) and ruthenium(II) tris-(bipyridine) (Ru(bpy)32+) doped nylon 6 (PA6) luminescent composite nanofibers (Ru-MWNTs-PA6) were successfully fabricated by a one-step electrospinning technique. The Ru-MWNTs-PA6 nanofibers, with unique 3D nanostructure, large specific surface area and a larger amount of immobilized-Ru(bpy)32+, maintained the photoelectric properties of the Ru(bpy)32+ ions and exhibited excellent ECL behaviors on glassy carbon (GC) electrode. As a solid-state ECL sensing platform, the Ru-MWNTs-PA6 nanofibers can sensitively detect low concentration catechol by monitoring the phenol-dependent ECL intensity change. The detection limit for catechol is 1.0nM, which is comparable or better than that in the reported assays. The solid-state ECL sensor displayed wide linear range, high sensitivity and good stability. It holds promise for the electrospun nanofibers-based ECL sensors have a great potential for routine analyses.
► The luminescent composite nanofibers (Ru-MWNTs-PA6) were first fabricated by a one-step electrospinning technique. ► Ru-MWNTs-PA6 nanofibers exhibited excellent ECL behaviors on GC electrodes. ► It is the first solid-state ECL sensor based on Ru-MWNTs-PA6 for catechol detection. ► The detection limit for catechol is 1.0nM, which is comparable or better than that in reported phenol assays. |
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ISSN: | 0039-9140 1873-3573 |
DOI: | 10.1016/j.talanta.2013.01.007 |