DETECTION ELEMENT

• US 20080185288A1
• Filed: 02/05/2008
• Published: 08/07/2008
• Est. Priority Date: 02/06/2007
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Yokokawa, Shinobu
• Application Number:
  US12/026,215
• Publication Number:
  US 20080185288A1
• Time in Patent Office: Days
• US Class Current: 204/418
• CPC Class Codes: G01N 27/3335 the membrane containing at least one organic component G01N27/3271 takes precedence; aspects concerning the enzyme reagent in enzyme electrodes C12Q1/001

Abstract

A detection element includes a detector by which a salt or an ion in an analyte is detectable. The detector includes a base and a reaction layer disposed on the base. The reaction layer has a polymer that has a main chain with an end thereof linked to the base, and a side chain branched from the main chain. The side chain contains an ion-trapping part in which an ion constituting the salt or the ion is trappable.

Claims

1. A detection element, comprising a detector by which one of a salt and an ion in an analyte is detectable, the detector including a base and a reaction layer disposed on the base, the reaction layer having a polymer, the polymer having:

a main chain with an end thereof linked to the base; and

a side chain branched from the main chain, the side chain containing an ion-trapping part in which one of an ion constituting the salt and the ion is trappable.

2. The detection element according to claim 1, wherein the ion-trapping part has a cyclic structure and has a function of trapping the ion into the cyclic structure based on a difference in kind and/or ion size of the ion.

3. The detection element according to claim 2, wherein the cyclic structure contains at least one kind of an oxygen atom, a nitrogen atom and a sulfur atom.

4. The detection element according to claim 2, wherein the ion-trapping part further has a coordination structure for coordination to the ion trapped in the cyclic structure.

5. The detection element according to claim 4, wherein the coordination structure is located between the cyclic structure and the main chain.

6. The detection element according to claim 1, wherein the detector includes a plurality of detectors.

7. The detection element according to claim 2, wherein:

the detector includes a plurality of detectors; and

the plurality of the detectors each have a different kind of the cyclic structure.

8. The detection element according to claim 1, wherein the detection element is configured to detect a difference between a non-trapping state where the polymer has the ion without being trapped in the ion-trapping part and a trapping state where the polymer has the ion trapped in the ion-trapping part based on a variation in electric characteristic of the reaction layer.

9. The detection element according to claim 8, wherein the polymer has an electron transfer assistance part for assisting transfer of an electron.

10. The detection element according to claim 9, wherein the polymer has the electron transfer assistance part in a side chain branched from the main chain.

12. The detection element according to claim 1, wherein the detection element is configured to detect a difference between a non-trapping state of the polymer without the ion trapped in the ion-trapping part and a trapping state of the polymer with the ion trapped in the ion-trapping part based on a variation in refractive index of the reaction layer.

11. The detection element according to claim 11, wherein the detection element is configured to detect a difference between a non-trapping state of the polymer without the ion trapped in the ion-trapping part and a trapping state of the polymer with the ion trapped in the ion-trapping part based on a variation in mass of the reaction layer.