Abstract An oxygen concentration probe which measures an oxygen concentration in a solution or a gas in accordance with equation (1) below by utilizing extinction of light by oxygen, said light being generated by excitation of light through immobilization of a polypyridine metal complex. Namely, the invention provides an oxygen concentration probe which can be readily miniaturized and consists of immobilized polypyridine metal complex which can be prepared from an economical material for visible rays of light as a photoconductor or optical material since the excited light and emitted light are visible rays of light and can be used stably even when it is dipped directly into a solution, or the like, without any protective film such as an oxygen-permeable film. l o /l = 1 + K[O 2 ] (1), where 1 0 and I each represent the intensity of emitted light (with the proviso that 1 0 is the intensity of the emitted light when the oxygen concentration is substantially zero), K is a constant and [O 2 is an oxygen concentration. 1 0 and K are constants that are independent of the oxygen concentration of a sample.
A probe for measuring oxygen concentration comprising an immobilized p ol ypy r idine metal complex.
Claim 2
Dependent Claim
16 words
A probe for measuring oxygen concentration comprising an immobilized p ol ypy r idine metal complex.
Claim 3
Dependent Claim
25 words
2 . A probe for measuring oxygen concentration of claim 1, wherein the polypyridine metal complex is immobilized on a conductor for a visible ray.
Claim 4
Dependent Claim
21 words
A probe for measuring oxygen concentration of claim 1, wherein the metal of the polypyridine metal complex is a transition metal.
Claim 5
Dependent Claim
32 words
A probe for measuring oxygen concentration of claim 1, wherein the ligand of the polypyridine metal complex is selected from the group consisting of bipyridine, phenanthroline, terpyridine and derivatives of these compounds.
Claim 6
Dependent Claim
19 words
A probe for measuring oxygen concentration of claim 1, wherein the metal of the polypyridine metal complex is ruthenium.
Claim 7
Dependent Claim
24 words
A probe for measuring oxygen concentration of claim 1, wherein the polypyridine metal complex is immobilized by being dissolved or dispersed in a macromolecule.
Claim 8
Dependent Claim
22 words
A probe for measuring oxygen concentration of claim 1, wherein the polypyridine metal complex is immobilized by being adsorped on an adsorbent.
Claim 9
Dependent Claim
27 words
A probe for measuring oxygen concentration of claim 1, wherein the polypyridine metal complex is immobilized by being introduced in a macromolecule as a constitutive unit thereof.
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