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Ordering of Quantum Dots Using Genetically Engineered Viruses

Science  03 May 2002:
Vol. 296, Issue 5569, pp. 892-895
DOI: 10.1126/science.1068054

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Abstract

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 into72-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.

  • * Present address: Department of Materials Science and Engineering and Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

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

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