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Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...

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Synthesis and Calibration of Phosphorescent Nanoprobes for Oxygen Imaging in Biological Systems
10:38

Synthesis and Calibration of Phosphorescent Nanoprobes for Oxygen Imaging in Biological Systems

Published on: March 3, 2010

Phosphorescent oxygen sensors based on nanostructured polyolefin substrates.

Ross N Gillanders1, Olga V Arzhakova, Andreas Hempel

  • 1Biochemistry Department, Cavanagh Pharmacy Building, University College Cork, Cork, Ireland.

Analytical Chemistry
|December 30, 2009
PubMed
Summary

New phosphorescent oxygen sensors utilize nanostructured polymer films for improved performance. These disposable sensors offer cost-efficient, large-scale applications in oxygen detection and smart packaging.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Sensor Technology

Background:

  • Development of phosphorescent materials for oxygen sensing.
  • Need for cost-effective and disposable oxygen sensors for large-scale applications.
  • Limitations of existing oxygen sensing technologies.

Purpose of the Study:

  • To describe novel phosphorescent oxygen-sensitive materials.
  • To utilize nanostructured polymer films for enhanced sensor properties.
  • To enable simple, cost-efficient production of disposable oxygen sensors.

Main Methods:

  • Fabrication of nanostructured high-density polyethylene and polypropylene films via solvent crazing.
  • Creation of a nanoporous network within polymer substrates.
  • Embedding of indicator dye molecules through physical entrapment.
  • Demonstration of sensor healing capabilities.

Main Results:

  • Successful creation of nanostructured polymer films with controlled nanopores.
  • Effective embedding and retention of indicator dye molecules.
  • Improved working characteristics of the developed oxygen sensors.
  • Demonstration of sensor healing.

Conclusions:

  • The developed phosphorescent oxygen sensors offer improved performance.
  • The nanostructured polymer approach allows for simple, cost-efficient, and disposable sensor production.
  • These sensors are suitable for large-scale applications like residual oxygen control and smart packaging.