| Abstract
| - A ferrocene functionalized SWCNT noncovalent nanohybrid was investigated by using a ferrocene/SWCNTinterdigitated construction film as an electrode for l-glutamate detection. Ferrocene could immobilize on thesurface of SWCNT bundles, and the ferrocene/SWCNT hybrid had a high stability not only in water but alsoin an organic solvent such as ethanol and acetone (no sediment was observed for more than 3 months). Thenanohybrid could not only be thoroughly dispersed in ethanol but also adhere tightly onto glass substrates toform an interdigitated construction film. Owing to the existence of more carbon nanotubes, more activeelectrochemical mediators, and the unique interdigitated structure of the film, the ferrocene/SWCNT electrodeexhibited a high catalytic efficiency, high sensitivity, and fast response during the detection of a lowconcentration of l-glutamate (1 μM). A good linear relationship between current and concentration was obtainedfrom 1 to 7 μM.
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