Kowshik, M. ; Vogel, W. ; Urban, J. ; Kulkarni, S. K. ; Paknikar, K. M. (2002) Microbial synthesis of semiconductor PbS nanocrystallites Advanced Materials, 14 (11). pp. 815-818. ISSN 0935-9648
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/1521-40...
Related URL: http://dx.doi.org/10.1002/1521-4095(20020605)14
Abstract
The use of microbes as producers of semiconductor nanocrystals is demonstrated. When torulopsis yeast is challenged with lead, it builds intracellular spherical crystallites of PbS, 2-5 nm in diameter (see Figure for an HR-TEM image) and pure by X-ray diffraction. The crystals, which can be isolated by freeze-thawing, show a sharp absorption maximum at 330 nm, corresponding to a bandgap of 3.75 eV.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
| Keywords: | Lead Sulfide; Microbial Synthesis; Nanocrystals; Semiconductor; Yeasts |
| ID Code: | 18044 |
| Deposited On: | 17 Nov 2010 13:17 |
| Last Modified: | 04 Jun 2011 08:45 |
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