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Advanced Materials

Nutrition-Driven Assembly of Colloidal Nanoparticles: Growing Fungi Assemble Gold Nanoparticles as Microwires

Authors


  • The authors thank Mats Boman, Klaus Leifer and Prasat Kittakoop for the discussions. A.S. thanks Bjorn Atthoff for his help with some of the instrumentation and microscopy and Kenneth Welch for help with the conductivity measurements. The experiment suggested by the anonymous reviewer was very insightful for our understanding of the presented work and is gratefully acknowledged. We thank SIDA and NSTDA (NANOTEC) for partial financial support. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

The use of a living fungus to ‘actively' assemble presynthesized gold nanoparticles over its hyphae, resulting in conducting microstructures (see figure), is reported. This physiologically (nutrition) driven process of colloidal self-organization avoids the need for sophisticated DNA/protein chemistry for facilitating interfacing with biological surfaces. The obtained gold-laden microstructures can be modified into flat ribbonlike or tubular morphologies by simple post-formation processing.

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