Oxygen detection using metalloporphyrins

An oxygen sensor comprising:

• a substrate configured for spectral analysis, and comprising at least a partial coating of a metalloporphyrin that is configured to bind oxygen;
• and
• a detector for detecting an emission spectrum or an absorption spectrum;
• wherein:
• the metalloporphyrin comprises a microbead or microcapsule.

An oxygen sensor comprising:

• a chamber configured to permit spectral analysis;
• and
• a metalloporphyrin configured to bind oxygen and encapsulated within a microbead or microcapsule;
• and
• a detector for detecting an emission spectrum or an absorption spectrum.

A method for detecting oxygen gas or dissolved oxygen gas in a sample, the method comprising:

• introducing the sample to an oxygen sensor comprising:
• a chamber comprising a substrate at least partially coated with a metalloporphyrin configured to bind oxygen;
• a light source;
• and
• a detector;
• contacting the metalloporphyrin with the sample;
• illuminating the chamber and sample with the light source;
• and
• detecting an emission spectrum or an absorption spectrum before and after introducing the sample;
• wherein:
• the metalloporphyrin comprises a microbead or microcapsule.

A method for detecting the oxygen gas or dissolved oxygen gas content of a sample, the method comprising:

• contacting the sample and a metalloporphyrin configured to bind oxygen in an oxygen sensor comprising:
• a chamber;
• a light source;
• and
• a detector;
• illuminating the chamber and sample with the light source;
• and
• detecting an emission spectrum or an absorption spectrum of the sample before and after introducing the sample;
• wherein the metalloporphyrin comprises a microbead or microcapsule, or is retained in a clathrate compound.