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Updated: May 30, 2026

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Protein-templated semiconductor nanoparticle chains.

S Padalkar1, J D Hulleman, S M Kim

  • 1School of Materials Engineering, Purdue University, West Lafayette, IN 47907, USA. Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA.

Nanotechnology
|August 11, 2011
PubMed
Summary
This summary is machine-generated.

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Researchers created cadmium sulfide (CdS) and lead sulfide (PbS) semiconducting nanoparticle chains using protein amyloidogenicity. The diameter of these novel nanowires was controlled by adjusting process parameters.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Biotechnology

Background:

  • Semiconducting nanoparticle chains offer unique electronic and optical properties.
  • Controlling the size and structure of these chains is crucial for their applications.
  • Protein self-assembly offers a potential route for fabricating ordered nanomaterials.

Purpose of the Study:

  • To fabricate cadmium sulfide (CdS) and lead sulfide (PbS) semiconducting nanoparticle chains for the first time.
  • To utilize the amyloidogenicity of proteins as a general templating mechanism for nanomaterial synthesis.
  • To control the diameter of the synthesized nanoparticle chains.

Main Methods:

  • Exploiting the amyloidogenicity of proteins to guide nanoparticle assembly.
  • Synthesizing CdS and PbS nanoparticle chains through controlled precipitation.

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Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates
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  • Tuning process parameters to control the diameter of the nanowires.
  • Characterization using field emission scanning electron microscopy (FESEM), UV-visible spectroscopy, transmission electron microscopy (TEM), electron energy loss spectroscopy (EELS), and high-resolution transmission electron microscopy (HRTEM).

    • Main Results:

    • Successful fabrication of CdS and PbS semiconducting nanoparticle chains.
    • Demonstration of amyloidogenicity as a versatile protein property for nanomaterial synthesis.
    • Achieved control over the diameter of the nanoparticle chains, ranging from approximately 50 to 350 nm.
    • Comprehensive characterization confirming the structure and composition of the nanoparticle chains.

    Conclusions:

    • Amyloidogenicity provides a novel and general approach for synthesizing semiconducting nanoparticle chains.
    • The developed method allows for tunable control over nanowire dimensions.
    • These CdS and PbS nanoparticle chains hold potential for various electronic and optoelectronic applications.