Labeling Dye with Polymethine Structure for Photostability
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Solution Overview
Problem
Current fluorescent dyes used in life sciences often suffer from low photostability and photobleaching, limiting their effectiveness in biological applications, especially when used in aqueous solutions across various pH conditions.
Innovation Solution
A novel labeling dye represented by specific chemical formulas, featuring a polymethine or polyene structure with substituents that enhance fluorescent intensity and photostability, allowing for effective labeling of biomolecules and stable fluorescence signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fluorescent dyes are used in aqueous solutions, then they can label biomolecules, but they exhibit low photostability and undergo photobleaching
Solution Approach 1:
The patent modifies the chemical structure of fluorescent dyes by introducing specific substituents (such as cyclic carboxylic acid groups, heterocyclic rings containing N, O, or S atoms) and adjusting molecular composition to enhance photostability while maintaining fluorescence properties in aqueous environments
Solution Approach 2:
The invention creates composite fluorescent dye structures by combining polymethine or polyene chains with specific heterocyclic rings and substituent groups, forming a composite molecular structure that resists photobleaching while maintaining labeling capability
2Illumination intensity
If fluorescent dyes are used to label biomolecules, then visualization is achieved, but fluorescent intensity is insufficient
Solution Approach 1:
The patent optimizes molecular parameters including extending the polymethine or polyene chain length, introducing electron-donating or electron-withdrawing substituents, and adjusting the conjugation system to maximize fluorescent intensity and quantum yield for enhanced detection sensitivity
3Reliability
If fluorescent dyes are designed for high performance, then structure complexity increases, but ease of manufacture decreases
Solution Approach 1:
The patent designs fluorescent dyes as modular structures with distinct functional segments (heterocyclic rings, polymethine chains, substituent groups) that can be synthesized separately and assembled, simplifying the manufacturing process while maintaining high photostability
Solution Approach 2:
The invention creates universal fluorescent dye platforms with core structures that can accommodate various substituents and linkers, allowing a single synthesis route to produce multiple dye variants with different spectral properties but comparable photostability
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 dye exhibits excellent light characteristics, including high fluorescent intensity and photostability, making it suitable for labeling biomolecules and maintaining bright fluorescence over time, even under varying conditions.
Implementation Method 1
Z is a fluorophore capable of generating a fluorescence signal
Data Source
AI summary
The present invention relates to: a labeling dye having excellent fluorescent intensity and photostability; and a kit.