公开(公告)号：DE10327492A1

公开(公告)日：2004-01-08

申请号：DE10327492

申请日：2003-06-17

Applicant: NAT AEROSPACE LAB OF JAPAN CHO

Inventor： ASAI KEISUKE ,  NISHIDE HIROYUKI ,  OKURA ICHIRO

IPC: C07D487/22 ,  C09K11/06 ,  G01N21/64 ,  G01N21/77 ,  G01N21/78 ,  G01N21/31

Abstract: The present invention provides an optical oxygen concentration measurement method and optical oxygen concentration measuring sensor wherein a light-absorbing dye-molecule layer whose absorption spectrum varies depending on the bonding with oxygen molecules is combined with a light-emitting layer, and the oxygen concentration of the ambient fluid can be measured. The light-absorbing layer 4 laminated to an oxygen-quenching light-emitting layer 3 is a film comprising a cobalt-porphyrin complex (CoP) or other light-absorbing dye molecule 7 whose absorption spectrum varies depending on the bonding with oxygen molecules. When the degree of overlap with the light emission spectrum or excitation (absorption) spectrum of the light-emitting layer 3 varies as a result of a variation in the absorption spectrum possessed by the light-absorbing layer 4, the light intensity of output light varies in accordance with the degree of overlap, and the oxygen concentration of the ambient fluid can be measured. These measurement method and measuring sensor can be applied not only to optical fiber sensors, but also to wind tunnel experiments and the like as pressure-sensitive paints.