Fluorinated Receptor 19F NMR Sensor Analyte Discrimination
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Solution Overview
Problem
Current sensors face challenges in discriminating between analytes with similar chemical structures and identifying them at unknown concentrations in complex mixtures, leading to difficulties in healthcare, process control, and environmental monitoring.
Innovation Solution
A sensor utilizing fluorinated receptors that induce shifts in 19F NMR resonances upon association with analytes, allowing for selective identification through spatial proximity and electron density changes, and capable of multi-dimensional differentiation and concentration calculation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional sensors are used to detect analytes in complex mixtures, then detection can be performed, but discrimination between analytes with similar chemical structures is insufficient
Solution Approach 1:
The patent employs 19F NMR spectroscopy to add a spectral dimension to analyte detection. By monitoring chemical shift changes, relaxation time variations, and signal intensity modifications in the fluorine NMR spectrum upon analyte binding, the system creates a multi-dimensional fingerprint for each analyte-receptor complex. This spectral dimensionality enables clear discrimination between analytes with similar chemical structures that would be indistinguishable by conventional single-parameter sensors.
Solution Approach 2:
The invention utilizes changes in NMR parameters (chemical shift, relaxation time T1/T2, signal intensity) as the fluorinated receptor binds to different analytes. Each analyte induces a unique pattern of parameter changes in the 19F NMR signal, creating a distinctive fingerprint. This parameter-based discrimination approach allows precise identification and differentiation of analytes even in complex mixtures, directly addressing the selectivity challenge.
2Productivity
If sensors attempt to identify multiple analytes simultaneously, then comprehensive detection is achieved, but overlapping responses make unambiguous identification difficult
Solution Approach 1:
The patent uses a panel of multiple fluorinated receptors, each with specific binding affinity for different analyte classes. By segmenting the detection task across multiple specialized receptors and monitoring their individual 19F NMR responses, the system can simultaneously identify multiple analytes in a mixture. Each receptor-analyte interaction produces distinct NMR parameter changes, allowing deconvolution of overlapping responses and unambiguous identification of each analyte present.
Solution Approach 2:
The multi-analyte detection capability arises from monitoring multiple NMR parameters (chemical shift, relaxation times, intensity) across multiple fluorinated receptors. This creates a high-dimensional response space where each analyte produces a unique signature pattern. Even when analytes are present simultaneously and their responses overlap in concentration, the multi-dimensional NMR fingerprinting allows computational discrimination and clear identification of each component.
3Measurement precision
If fluorinated receptors are used to enhance selectivity through 19F NMR shifts, then analyte identification precision is improved, but the sensor complexity increases
Solution Approach 1:
The invention replaces complex mechanical or electronic sensor systems with a chemically-based 19F NMR detection approach. Instead of using sophisticated physical sensing mechanisms, the system utilizes the inherent spectral properties of fluorinated receptors and their interactions with analytes. The information is extracted from NMR spectral parameters, which can be acquired using standard NMR instrumentation, thereby achieving high precision identification without mechanically complex sensor designs.
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
Enables precise and simultaneous identification of multiple analytes in complex mixtures, providing orthogonal discriminatory power and enhanced selectivity, even in the presence of structurally similar compounds.
Implementation Method 1
a 19F NMR resonance of the receptor shifts when associating with an analyte
Implementation Method 2
The shift of 19F NMR resonance can be induced by spatial proximity. The shift of the 19F NMR resonance can be induced by changes in electron density.
Implementation Method 3
The shift of the 19F NMR resonance can be induced by differences in a magnetic micro-environment.
Data Source
AI summary
A sensor including a fluorinated receptor can be used to identify an analyte through shift in 19F NMR resonance of the receptor when the receptor interacts with the analyte.