| abstract |
PROBLEM TO BE SOLVED: To provide a glucose sensor chip having a sensing film with high measurement sensitivity. An optical waveguide layer (3) including a pair of gratings (4) spaced apart from each other on a main surface of a substrate (2), and a sensing film (5) provided on the optical waveguide layer (3) portion between the pair of gratings (4). 5 is formed from a film-forming polymer compound, a crosslinkable polymer compound, and a porous low-molecular compound, and a color former, a first enzyme that oxidizes or reduces glucose in the film, and a product of the first enzyme; It retains a second enzyme that reacts to produce a substance that develops color in the color former. [Selection] Figure 1 |