Aside from its unpleasant odor, the toxic gas-a natural byproduct of organic and inorganic wastes-can corrode metal.

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The key to the process is the development of organic extractants that are specific to the metal to be extracted.

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Aside from its unpleasant odor, the toxic gas a natural byproduct of organic and inorganic wastes can corrode metal.

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The material is an organic photovoltaic semiconductor (called rr-P3HT) which, unlike the metal or silicon-based materials used until now for such biotechnological interfaces, is soft, light, flexible and highly biocompatible and naturally sensitive to visible light.

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