Related Experiment Video
Updated: Jun 21, 2026
07:00
Accumulation and Analysis of Cuprous Ions in a Copper Sulfate Plating Solution
Published on: March 20, 2019
Coumarin-derivative-based off-on catalytic chemodosimeter for Cu2+ ions
Mi Hee Kim1, Hyun Hye Jang, Sujung Yi
1Department of Chemistry, Chung-Ang University, Seoul 156-756, Republic of Korea.
Chemical Communications (Cambridge, England)
|August 5, 2009
Summary
A novel coumarin derivative acts as a highly effective turn-on fluorescent sensor. Catalytic hydrolysis by copper ions (Cu2+) significantly amplifies the fluorescence signal, enabling sensitive detection.
Area of Science:
- Analytical Chemistry
- Organic Chemistry
- Materials Science
Background:
- Fluorescent sensors are crucial for detecting metal ions.
- Developing selective and sensitive sensors remains a challenge.
- Coumarin derivatives offer versatile platforms for sensor design.
Purpose of the Study:
- To develop a novel coumarin-based fluorescent sensor.
- To investigate the catalytic hydrolysis mechanism by Cu2+.
- To demonstrate signal amplification for enhanced sensitivity.
Main Methods:
- Synthesis of a new coumarin derivative.
- Fluorescence spectroscopy to monitor sensor response.
- Kinetic studies to elucidate the catalytic hydrolysis.
Main Results:
- The coumarin derivative functions as a turn-on fluorescent sensor.
- Catalytic hydrolysis by Cu2+ leads to a significant fluorescence enhancement.
- The fluorescence intensity increase is attributed to signal amplification.
Conclusions:
- The developed coumarin derivative is a highly effective fluorescent sensor for Cu2+.
- The catalytic hydrolysis mechanism provides a pathway for signal amplification.
- This sensor offers potential for sensitive detection of copper ions.
![[(DPEPhos)(bcp)Cu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F59739.jpg&w=3840&q=50)
Related Concept Videos
00:39Complexometric Titration: Overview
Complexometric titration involves the formation of a complex by reacting a metal ion with one or more ligands. A visual indicator often detects the end point of a complexometric titration. It is added to the metal solution before the titration, forming a stable metal–indicator complex and imparting color to the solution. As the titration approaches the equivalence point, the excess of the added ligand displaces the indicator from the metal–indicator complex, releasing the free indicator. The...
01:27Controlled-Current Coulometry: Overview
Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
01:18Controlled-Current Coulometry: Coulometric Titration
Coulometric titrations are a form of titrimetric analysis where the reagent is generated electrically, and its amount is evaluated based on current and generating time. The electron serves as the standard reagent. The procedure is similar to conventional titrations, such as endpoint detection.
The fundamental requirements for coulometric titrations are (1) 100% efficiency in the reagent-generating electrode reaction and (2) a stoichiometric and preferably rapid reaction between the generated...
The fundamental requirements for coulometric titrations are (1) 100% efficiency in the reagent-generating electrode reaction and (2) a stoichiometric and preferably rapid reaction between the generated...
01:19Precipitation Titration: Endpoint Detection Methods
In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...
In the Volhard method, a standard excess of AgNO3 is first added to the...
01:10Voltammetric Techniques: Cyclic Voltammetry
Cyclic voltammetry (CV) is an electrochemical technique used to investigate the redox properties of a chemical species. It involves measuring the current response of an electrochemical cell as a function of the applied potential. The setup for cyclic voltammetry typically consists of a working electrode, a reference electrode, and a counter electrode—all immersed in an electrolyte solution. The working electrode is where the redox reaction of interest occurs, while the reference electrode...
01:19Gas Chromatography: Types of Detectors-II
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...