SEED Dye Clusters Prevent Quenching
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Solution Overview
Problem
Conventional fluorescent dyes face challenges such as signal quenching at high concentrations and photobleaching, which limit their sensitivity and longevity in biological assays and imaging applications.
Innovation Solution
The development of modular sterically-enhanced emission dye (SEED) clusters, where multiple SEED molecules are appended to a single polymeric chain, preventing quenching and minimizing photobleaching through a core-shell architecture that limits dye-solvent interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If fluorescent dye concentration is increased to enhance signal strength, then signal strength is improved, but dye molecules interact electronically and quench the signal
Solution Approach 1:
The invention segments the fluorescent dye system into individual dye molecules that are spatially separated on a solid support surface. Each dye molecule is positioned at distinct locations rather than being in close proximity to other dye molecules, which prevents electronic interactions and quenching while maintaining high signal strength through the cumulative effect of multiple distributed dye molecules.
2Illumination intensity
If fluorescent dye concentration is increased to enhance signal strength, then signal strength is improved, but photobleaching and oxidative damage increase
Solution Approach 1:
By distributing dye molecules individually across a solid support surface rather than concentrating them, the invention reduces the local concentration of dyes. This segmentation approach maintains overall signal strength through the collective contribution of many dye molecules while reducing photobleaching and oxidative damage that occur at high local concentrations.
Solution Approach 2:
The invention introduces a solid support surface as an intermediary between the dye molecules and the environment. This solid support matrix provides a stable platform that holds dye molecules in fixed positions, protecting them from solvent-mediated photobleaching and oxidative damage while allowing the dyes to maintain their fluorescent properties.
3Measurement precision
If dye molecules are bound to biomolecules or surfaces to enable detection, then detection capability is improved, but signal quenching occurs at high local concentrations
Solution Approach 1:
The invention segments the dye labeling approach by attaching individual dye molecules to biomolecules or positioning them on solid support surfaces at distributed locations. This segmentation ensures that while enough dye molecules are present for sensitive detection, they are spaced sufficiently apart to avoid electronic interactions and quenching, thereby maintaining both detection capability and signal strength.
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
This approach enables higher signal strength and longer-lasting fluorescence, allowing for higher dye densities and improved imaging or detection capabilities without significant signal loss, while maintaining the optical and chemical properties of the dyes.
Implementation Method 1
fluorescent dyes are widely used in biological assays... Enhancement of the signal strength of the fluorescent dye would be beneficial... multiple SEED molecules are appended to a single polymeric chain... enabling higher dye densities and higher signal strength
Implementation Method 2
Another deficiency of traditional fluorescent dyes includes photobleaching, or photo-oxidation of the dye to a non-fluorescent form by the light source... Photobleaching and oxidative damage are also minimized by the core-shell architecture of the water-soluble dye clusters which limits dye-solvent interactions
Data Source
AI summary
The present invention relates to modular sterically enhanced emission dye (SEED) clusters, wherein multiple SEED molecules are appended to a single polymeric chain.