Imprinted Polymer Redox Probe for Micropollutant Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current sensors for detecting micropollutants in water require complex setups, are time-consuming, and struggle with miniaturization, especially in real-time monitoring, due to high noise/signal ratios and the need for additional transmission means, limiting their effectiveness in rapid interventions during pollution events.
Innovation Solution
A nonelectrically conducting imprinted polymer is developed with a redox probe integrated into its structure, allowing direct transmission of the recognition phenomenon as a measurable electrical or electrochemical signal without additional transmission means, enhancing detection sensitivity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sensors are used for detecting micropollutants, then detection capability is achieved, but device complexity and time consumption increase
Solution Approach 1:
The patent combines the recognition function (molecularly imprinted polymer) and transduction function (electrochemical sensor) into a single integrated device. The MIP is directly deposited on the electrode surface, eliminating the need for separate pretreatment equipment and complex transmission means, thereby reducing device complexity while maintaining detection capability
Solution Approach 2:
The electrochemical sensor platform serves multiple functions: it acts as both the transducer for signal detection and the support substrate for the MIP recognition layer. This multi-functionality reduces the number of components needed and simplifies the overall device structure
2Measurement precision
If conventional sensors are used for detecting micropollutants, then detection capability is achieved, but analysis time increases
Solution Approach 1:
The molecularly imprinted polymer is pre-prepared with specific recognition cavities tailored to the target analyte before deployment. This preliminary customization of the recognition sites enables direct and rapid binding of the target molecule without requiring complex sample preparation or separation steps during analysis
Solution Approach 2:
By integrating the MIP recognition layer directly on the electrochemical electrode, the patent eliminates time-consuming intermediate steps such as sample pretreatment and signal transmission through additional components, enabling rapid real-time detection
3Measurement precision
If optical sensors are used, then sensitivity is improved, but miniaturization becomes difficult
Solution Approach 1:
The patent replaces the optical detection system with an electrochemical transduction system. The electrochemical sensor inherently provides low noise/signal ratio and high sensitivity while being naturally suitable for miniaturization, as electrochemical measurements can be performed at micro-scale electrode surfaces without the bulky optical components required by optical sensors
4Device complexity
If electrochemical sensors are used, then miniaturization and cost are improved, but detection sensitivity decreases in complex matrices
Solution Approach 1:
The patent applies molecular imprinting to create localized recognition sites with specific affinity and selectivity for the target analyte on the electrode surface. These locally customized recognition cavities enable the miniaturized electrochemical sensor to maintain high detection sensitivity even in complex matrices by specifically binding the target molecule while rejecting interferents
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The imprinted polymer effectively detects targets with improved sensitivity and stability, enabling rapid and cost-effective monitoring of micropollutants, suitable for real-time applications without the need for complex setups or additional transmission means.
Implementation Method 1
The imprinted polymer of the invention comprises, in its structure, at least one redox probe capable of providing, in the vicinity of said cavity having the shape of a target, at least one electron transfer between said target and an electrode
Data Source
AI summary
An imprinted polymer that is not electrically conductive is obtained by polymerization of at least one monomer with at least one crosslinking agent in the presence of a target. The polymer has in its structure at least one cavity having the shape of a target and at least one redox probe assuming either a polymerizable form or a non-polymerizable form. Methods are for preparing an imprinted polymer, for detecting a target implementing such a polymer. The polymer is used as a sensor, and more particularly an imprinted sensor, an active interface to manufacture electrochemical (bio)sensors, or to manufacture solid-phase extraction substrates.