Thin layer type electrochemical system including salt bridge and electrochemical analysis method using the same

Patent metadata

Field	Value
Publication number	US-2026056161-A1
Application number	US-202218684725-A
Country	US
Kind code	A1
Filing date	Feb 11, 2022
Priority date	Aug 30, 2021
Publication date	Feb 26, 2026
Grant date	—

Abstract

The present disclosure relates to a thin layer type electrochemical system including a salt bridge and an electrochemical analysis method using the same and, more particularly, to a thin layer type electrochemical system including a salt bridge and an electrochemical analysis method using the same, which implement the chamber part accommodating the analytical solution of the thin layer type electrochemical system including a salt bridge, such that it is thinner than the diffusion layer; use polyelectrolyte gel as a salt bridge to limit lateral diffusion of reactants; use a specific polyelectrolyte gel; and use a transparent working electrode, thereby measuring the peaks of several consecutive reactions in voltammetry with high resolution, enabling analysis of organic solvents, and allowing electrochemical and spectroscopic measurements to be performed simultaneously.

First claim

1 . A thin layer type electrochemical system including a salt bridge, which is an electrochemical system for electrochemical reaction analysis, the thin layer type electrochemical system including a salt bridge comprising:
a chamber part which accommodates an analysis solution and is provided with a working electrode on its one side; a channel part which accommodates an electrolyte solution; and one or more salt bridge parts which include a polyelectrolyte gel and are formed between the chamber part with the channel part, wherein each of the channel part and the chamber part includes one or more holes communicating with the outside, and wherein the chamber part is isolated by the salt bridge part which include a polyelectrolyte gel.

2 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the analysis solution is a hydrophilic solution or a hydrophobic solution.

3 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the thickness of the chamber part is 5 μm or greater and less than 50 μm.

4 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the polyelectrolyte gel included in the salt bridge part is selected from the group consisting of poly diallyldimethylammonium chloride (pDADMAC), poly laurylacrylate tetrakis(3,5-bis(trifluoromethyl)phenyl)borate (pLA-TFPB) and a combination thereof.

5 . The thin layer type electrochemical system including a salt bridge of claim 4 , wherein when the analysis solution is a hydrophilic solution, the polyelectrolyte gel is poly diallyldimethylammonium chloride, and
wherein when the analysis solution is a hydrophobic solution, the polyelectrolyte gel is poly laurylacrylate tetrakis(3,5-bis(trifluoromethyl)phenyl)borate.

6 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the working electrode is an electrode selected from the group consisting of gold, platinum, carbon, indium tin oxide (ITO), and semiconducting materials.

7 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the hole of the channel part includes a reference electrode hole provided with a reference electrode and a counter electrode hole provided with a counter electrode.

8 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the hole of the chamber part includes an inlet hole for injecting an analysis solution and a outlet hole for removing an analysis solution.

9 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the volume of the chamber part is 0.1 μl or greater and 5.0 μl or less.

10 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the polyelectrolyte gel is polymerized by irradiating light at the salt bridge part.

11 . The thin layer type electrochemical system including a salt bridge of claim 6 , wherein when the working electrode is ITO, the system further includes:
a light irradiation part which irradiates light toward one side of the thin layer type electrochemical system including a salt bridge; and a light detection part provided to correspond to the light irradiation part and detect the irradiated light.

12 . The thin layer type electrochemical system including a salt bridge of claim 1 , wherein the salt bridge part separates the channel part and the chamber part from each other so that each of the electrolyte solution and the analysis solution does not flow between the channel part and the chamber part.

13 . An electrochemical analysis method for analyzing an electrochemical reaction using a thin layer type electrochemical system including a salt bridge of claim 1 , the electrochemical analysis method comprising:
injecting an analysis solution into the chamber part and injecting an electrolyte solution into the channel part; providing a reference electrode and a counter electrode in the channel part; and measuring an electrochemical signal from the working electrode.

14 . The electrochemical analysis method of claim 13 , further comprising:
calculating the number of electron transferred from the measured electrochemical signal, wherein the analysis solution of a predetermined concentration is injected.

15 . The electrochemical analysis method of claim 13 , wherein the electrochemical signal is one selected from the group consisting of current, the amount of charge, potential difference, and combinations thereof.

16 . The electrochemical analysis method of claim 13 , wherein when the working electrode is ITO, the electrochemical signal is measured while at the same time the spectroscopic change is measured with a light detection part.

17 . The electrochemical analysis method of claim 13 , wherein the volume of the analysis solution is 0.1 μl or greater and 5.0 μl or less.

Assignees

• Seoul Nat Univ R&Db Foundation

Inventors

• Chung Taek Dong
• Kim Ji Yong

Classifications

• G01N27/48

  using polarography, i.e. measuring changes in current under a slowly-varying voltage · CPC title

• G01N27/416

  Systems (G01N27/27 takes precedence) · CPC title

• G01N27/30

  Electrodes, e.g. test electrodes; Half-cells (G01N27/414 takes precedence) · CPC title

• G01N27/401 Primary

  Salt-bridge leaks; Liquid junctions · CPC title