Polydentate Polycyclic Compounds for Ratiometric Metal Ion Detection
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Solution Overview
Problem
Current luminescent compounds require multiple structurally different compounds to produce different luminescent outputs, making them inefficient for applications like metal ion detection and light-emitting diodes, as each color requires a unique compound.
Innovation Solution
Development of polydentate polycyclic compounds, such as those with the structure of Formula (S1), which interact with analytes like metal ions to emit light at different wavelengths, reducing the need for multiple compounds by incorporating 8-hydroxyquinoline structural properties and forming macrocyclic structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple structurally different compounds are used to produce different luminescent outputs, then the luminescent color variety is improved, but the device complexity and compound quantity increase
Solution Approach 1:
The patent applies universality by designing a single compound that can perform multiple luminescent functions. The compound incorporates a fluorophore connected to a macrocyclic receptor that can bind multiple different metal ions, allowing one compound to generate multiple different luminescent outputs depending on which metal ion is bound, thereby eliminating the need for multiple structurally different compounds
2Adaptability or versatility
If multiple structurally different compounds are used to produce different luminescent outputs, then the luminescent color variety is improved, but the quantity of substances required increases
Solution Approach 1:
The patent applies universality by designing a single compound that can perform multiple luminescent functions. The compound incorporates a fluorophore connected to a macrocyclic receptor that can bind multiple different metal ions, allowing one compound to generate multiple different luminescent outputs depending on which metal ion is bound, thereby eliminating the need for multiple structurally different compounds
3Device complexity
If a single compound is used to generate multiple luminescent outputs, then the device complexity is reduced, but the adaptability to different analytes must be improved
Solution Approach 1:
The patent applies the intermediary principle by introducing a macrocyclic receptor as a mediator between the fluorophore and metal ions. The receptor binds to different metal ions with varying affinities, and this binding event modulates the luminescence of the fluorophore, enabling the single compound to recognize and respond to multiple different analytes
Solution Approach 2:
The patent applies parameter changes by utilizing the different binding affinities of the macrocyclic receptor for different metal ions. Each metal ion binding event changes the luminescence parameters (intensity, wavelength) of the fluorophore, allowing the single compound to differentiate between multiple analytes through changes in luminescence characteristics
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
These compounds can generate various luminescent colors upon exposure to different analytes, enhancing efficiency in metal ion detection, light-emitting applications, and other uses like MRI contrast agents and metal-organic frameworks by using a single compound to achieve multiple luminescent outputs.
Implementation Method 1
Fluorescence occurs when a substance/material absorbs ultraviolet (UV) light, and then emits light, typically of a lower wavelength
Implementation Method 2
Luminescence is the emission of light by a substance/material that does not result from heat
Data Source
AI summary
Polydentate polycyclic compounds of various formulas are disclosed herein. The compounds are useful for ratiometric luminescence. Significantly, the compounds will luminesce at different wavelengths/colors, depending on the analyte (metal ion, acid, or boron-containing compound) it is combined with. Thus, a single compound can provide different luminescent outputs based on the analyte, rather than requiring an entire set of structurally different compounds to detect each analyte or to generate a desired color output.