| Popis: |
Carotenoids are polyacetylene-like natural products with substituents that enhance stability, solubility, and processing. Measurements on a set of five carotenoids show bixin and β-carotene to be active as field effect semiconductors, with p-type mobilities in the range of 10−6 to 10−7 cm2/V s. The structural characteristics responsible for distinguishing between active and inactive compounds are not apparent at this time. However, biosynthetic means of making carotenoids may make available a large number of carotenoids, both natural and unnatural, suggesting that carotenoids could be a rich source of different field effect semiconductors. |
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