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Co-assembly modulates a single dye to achieve complex functional outcomes: turn-on sensing, turn-off sensing, and
Seth Baker1,2, Nathaniel A Leonard1,3, Madison Desnoyer1,2
1Department of Chemistry, University of Victoria Victoria BC V8P 5C2 Canada fhof@uvic.ca.
Researchers developed a novel sensing strategy using macrocyclic host molecules. This approach enhances sensor sensitivity and allows for the differentiation of complex biological mixtures, like drugs and mushrooms.
Area of Science:
- Chemical Sensing
- Supramolecular Chemistry
- Analytical Chemistry
Background:
- Differential sensing using macrocyclic hosts is advancing clinical applications.
- Current sensor systems are limited by the binding properties of individual components.
Purpose of the Study:
- To introduce a new sensing strategy by co-assembling host molecules.
- To enhance sensor performance and enable differentiation of complex mixtures.
Main Methods:
- Non-covalent co-assembly of a reporter host with sulfo-pillar[n]arene.
- Utilizing DimerDye-class sensors augmented by co-assembly.
- Analyzing ternary complex formation and fluorescence output changes.
Main Results:
- Achieved over 100-fold increase in sensitivity in some cases.
- Demonstrated dramatic variations in analyte responses.
- Successfully distinguished between illicit drugs and wild mushroom tissue samples.
Conclusions:
- Co-assembly of host molecules confers functional complexity onto a single reporter.
- Emergent sensing properties, including increased signal intensity and unique fluorescence changes, were observed.
- This method allows complex mixture differentiation using a single sensor system.
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