Quantum Dot / Optical Protein Bio-Nano Hybrid System for Biosensing Applications

Abstract

The unique energy transfer interaction between the optical protein bacteriorhodopsin (bR) and CdSe/ZnS quantum dots (QDs) provides a potential modulation mechanism for bio-nano electronic application. We have utilized ionic-self assembled monolayer (I-SAM) techniques to create a novel alternating monolayer system of QDs and bR on a conductive ITO substrate. Results demonstrate the ability to efficiently create bR/QD multilayer films along with the ability to control bR/QD spacing on the nanometer scale. I-SAM films of this nature demonstrate a sharp decrease in QD emission when deposited in close proximity to bR, suggesting possible fluorescence resonance energy transfer (FRET) effects in a bR/QD nanoscale system. The ability to modulate the QD photonic output based on proximity to bR in the ISAM films could provide a direct method to modulate the electrical output for bio-nano sensing applications.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2008
Accession Number
ADA505740

Entities

People

  • C. Friedrich
  • D. Lueking
  • G. Mallick
  • M. Griep
  • R. Mackay
  • S. Karna

Organizations

  • Michigan Technological University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Advanced Materials
  • Archaeal Proteins
  • Bacteriorhodopsin
  • Cell Membrane
  • Chemistry
  • Emission
  • Energy
  • Energy Transfer
  • Engineering
  • Films
  • Fluorescence
  • Materials
  • Monomolecular Films
  • Optical Properties
  • Proteins
  • Quantum Dots
  • Self Assembled Monolayers

Readers

  • Nanocomposite Materials Science
  • Nanoscale Plasmonic Nanotechnology

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Quantum Computing
  • Space
  • Space - Spacecraft Maneuvers