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Science 3 May 2002:
Vol. 296. no. 5569, pp. 892 - 895
DOI: 10.1126/science.1068054
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Reports

Ordering of Quantum Dots Using Genetically Engineered Viruses

Seung-Wuk Lee, Chuanbin Mao, Christine E. Flynn, Angela M. Belcher*dagger

A liquid crystal system was used for the fabrication of a highly ordered composite material from genetically engineered M13 bacteriophage and zinc sulfide (ZnS) nanocrystals. The bacteriophage, which formed the basis of the self-ordering system, were selected to have a specific recognition moiety for ZnS crystal surfaces. The bacteriophage were coupled with ZnS solution precursors and spontaneously evolved a self-supporting hybrid film material that was ordered at the nanoscale and at the micrometer scale into ~72-micrometer domains, which were continuous over a centimeter length scale. In addition, suspensions were prepared in which the lyotropic liquid crystalline phase behavior of the hybrid material was controlled by solvent concentration and by the use of a magnetic field.

Department of Chemistry and Biochemistry, Center for Nano- and Molecular Science and Technology, Texas Materials Institute, Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA.
*   Present address: Department of Materials Science and Engineering and Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

dagger    To whom correspondence should be addressed. E-mail: belcher{at}mit.edu

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