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Seung-Wuk Lee

Publications and source records attributed to Seung-Wuk Lee.

2 recordsLinked to original sources

Phage as templates for hybrid materials and mediators for nanomaterial synthesis.

Genetic engineering of phage provides unprecedented opportunities to build novel nanomaterials by integrating biology, chemistry and materials science principles. By mimicking the evolution process in nature, the phage is used as an information-mining tool to identify specific peptide information that can recognize desired materials at the molecular level. The unique recognition peptides of the phage can direct peptide-mediated mineralization processes to grow many useful nanometer-scale electronic and medical materials. The monodispersity and long rod shape of the phage, bearing specific recognition motifs, enable the organization of various nanomaterials into periodically ordered hierarchical structures that could be useful for electronic, optical and biotechnological applications.

Bacteriophages↗

Ordering of quantum dots using genetically engineered viruses.

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 approximately 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.

Bacteriophage M13↗