ORGN 260 |
| Single-walled carbon nanotubes (CNTs) are an attractive platform for applications in optoelectronics and photovoltaics. Although they have desirable electrical properties, CNTs are notoriously insoluble in most organic solvents thus hindering their chemical manipulation. We report here that CNTs can be noncovalently functionalized with a combination of Zn(II) metalloporphyrin complex 2 and a cis-protected Pd(II) complex 3 in aqueous solutions of acetonitrile. The resulting solubilized CNT composite 1 was characterized using ultraviolet-visible spectroscopy and scanning electron microscopy. Also presented are the optoelectronic properties of the CNT composite 1 within a nanotube field-effect transistor device. The individual components (2 and 3) and the supramolecular complex change the electronic properties of CNTs as evidenced by shifts in the transistor curve, while further shifts are observed when the device is irradiated with light. Differences in conductance between CNTs and functionalized CNTs will also be discussed.
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Molecular Recognition and Materials
1:00 PM-4:40 PM, Monday, 29 August 2005 Washington DC Convention Center -- 201, Oral
Division of Organic Chemistry |
