ANYL 211 |
| Solubilization of single-walled carbon nanotubes (SWNTs) in aqueous solution has received much attention for biological applications. In this study, we compared the reactivity of enzyme glucose oxidase (GOx) encased SWNT suspensions prepared by two different approaches. The first approach used sonication to directly disperse nanotubes into aqueous solutions containing GOx. The second method was to add GOx into surfactant SDS-encased SWNT aqueous solutions and dialytically remove SDS. The dialysis-resulting GOx-SWNT suspensions showed spectral changes after addition of glucose. The observed spectral changes suggested that the enzyme retained its activity and catalyzed glucose reaction to produce hydrogen peroxide, an oxidant to SWNTs. In contrast, sonication-resulting GOx-SWNT suspensions did not respond to glucose, indicating that the enzyme activity might be lost after sonication. The near infrared optical properties of the dialysis-resulting GOx-SWNTs under different glucose concentrations will be presented. |
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General Session
7:00 PM-9:00 PM, Sunday, 26 March 2006 Georgia World Congress Center -- Ex. Hall B4, Poster
Division of Analytical Chemistry |