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Related Concept Videos

Special considerations while measuring oxygen saturation01:19

Special considerations while measuring oxygen saturation

Assessing respiratory rate concurrently with pulse measurement is fundamental to patient care, providing valuable insights into the patient's respiratory function. The normal breathing rate for an adult usually falls within a normal range of 12 to 20 breaths per minute. Abnormal respiratory rates can signal underlying health conditions or the need for immediate intervention.
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Related Experiment Video

Updated: Jun 27, 2026

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

Novel oxygen sensitive complexes for optical oxygen sensing.

J F Fernández-Sánchez1, T Roth, R Cannas

  • 1Department of Analytical Chemistry, Faculty of Science, University of Granada, C/Fuentenueva s/n, E-18071 Granada, Spain; Centre for Chemical Sensors, Swiss Federal Institute of Technology Zurich (ETHZ), Technoparkstrasse 1, CH-8005 Zürich, Switzerland.

Talanta
|December 17, 2008
PubMed
Summary

New optical sensing films using iridium (III) and ruthenium (II) complexes offer stable, long-term oxygen detection. These films are robust, reversible, and can be sterilized for practical applications.

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Last Updated: Jun 27, 2026

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Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Photochemistry

Background:

  • Optical sensors are crucial for monitoring oxygen levels in various applications.
  • Developing sensors with high photostability and reliability is an ongoing challenge.

Purpose of the Study:

  • To develop novel optical sensing films for oxygen detection.
  • To evaluate the impact of plasticizers on sensor performance.
  • To assess the stability and sterilizability of the developed films.

Main Methods:

  • Synthesis of novel optical sensing films incorporating iridium (III) and ruthenium (II) complexes.
  • Incorporation of complexes into polystyrene membranes.
  • Evaluation of luminescence properties (quantum yield, Stern-Volmer constant) and sensor performance (reversibility, response time) with varying plasticizers.
  • Testing of sterilization methods (chemical cleaning, gamma-ray irradiation).

Main Results:

  • The developed optical sensing films exhibit excellent long-term photostability (several months).
  • Different plasticizers significantly influence luminescence quantum yield, Stern-Volmer constant, reversibility, and response time.
  • The sensing films demonstrate robustness and can be effectively sterilized using chemical cleaning and gamma-ray irradiation.

Conclusions:

  • Novel iridium (III) and ruthenium (II) based optical sensing films provide a stable and reliable method for oxygen detection.
  • Plasticizer selection is critical for optimizing sensor performance.
  • The films' ability to withstand sterilization broadens their potential for practical applications.