Binaphthyl-Based Fluorescent Polymers for Tunable Absorption
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Solution Overview
Problem
Current water-soluble π-conjugated polymer dyes for immunofluorescent labeling are expensive to manufacture, laborious to synthesize, and limited in their absorption band, making them less flexible and less effective for biological applications, particularly in the UV region of the spectrum.
Innovation Solution
Development of π-conjugated polymers based on binaphthyl monomers that allow precise tuning of the absorption wavelength by copolymerization with suitable comonomers, enabling control over the absorption band edge from the deep UV into the visible range, matching the wavelength of various excitation lasers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If 4,4'-functionalized binaphthyl monomers are used for polymer synthesis, then the polymer dyes achieve water solubility and fluorescent properties, but the manufacturing process becomes expensive and laborious
Solution Approach 1:
The patent extracts the essential functional requirements (water solubility and fluorescence) from the complex 4,4'-functionalized binaphthyl monomer structure and achieves them through simpler monomer designs with appropriate substituents, eliminating the need for expensive and laborious synthesis of highly functionalized monomers while maintaining the desired polymer properties
Solution Approach 2:
The patent modifies the molecular parameters of the monomers by changing the substitution patterns and functional groups attached to the binaphthyl core, allowing tuning of polymer properties such as water solubility and fluorescence without requiring complex 4,4'-functionalization, thereby simplifying the manufacturing process
2Manufacturing precision
If special comonomers are used with ultraviolet excitation light, then the polymer dyes achieve appropriate absorption characteristics, but the system complexity increases
Solution Approach 1:
The patent designs binaphthyl-based monomers that can serve multiple functions: they provide the core fluorescent structure, enable water solubility through substituents, and allow absorption tuning by incorporating different comonomers. This multi-functionality reduces the need for specialized complex comonomer systems and simplifies the overall design while achieving precise absorption band matching across different excitation wavelengths
Solution Approach 2:
The patent achieves absorption band tuning by changing the chemical structure parameters of the comonomers (such as conjugation length, electron-donating or electron-withdrawing groups) rather than using complex special comonomer systems, thereby achieving precise matching with excitation lasers while maintaining relative system simplicity
3Ease of manufacture
If the absorption band is limited to narrow violet regions, then current polymers are easier to manufacture, but their usefulness for biological applications is reduced
Solution Approach 1:
The patent achieves broad absorption coverage from UV to visible regions by systematically varying the molecular parameters of the binaphthyl monomers and comonomers, such as conjugation extent and substituent types, allowing the same basic polymer platform to be tuned for different excitation wavelengths without requiring entirely different synthesis pathways, thus maintaining ease of manufacture while greatly expanding application versatility
Solution Approach 2:
The patent creates composite polymer structures by combining binaphthyl monomers with various comonomers having different electronic properties, resulting in a family of polymers with tuned absorption characteristics that cover a broad spectral range, thereby expanding applicability while building upon a consistent and manageable synthesis platform
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 polymers provide a cost-effective and flexible solution for expanding the range of water-soluble polymeric dyes, enhancing their utility in biological applications by precisely matching the absorption band to the desired excitation laser, thereby improving the sensitivity and versatility of fluorescence detection.
Implementation Method 1
Water-soluble π-conjugated polymers have been used as fluorophores with remarkable brightness
Implementation Method 2
The sensitivity of the analysis mainly depends on the brightness of the fluorophores
Implementation Method 3
The energy of the system can be precisely controlled by copolymerization of the binaphthyl monomers with suitable comonomers. Strategic choice of comonomers gives the ability to tune the polymer absorption band edge from the deep UV into the visible range of the spectrum
Implementation Method 4
The polymeric tandem dyes further include a signaling chromophore covalently linked to the multichromophore in energy-receiving proximity therewith
Data Source
AI summary
The invention is directed to a conjugate having the general formula (I)Wherein AR and MU are repeating units of a polymerMU is a polymer modifying unit or band gap modifying unit that is evenly or randomly distributed along the polymer main chain,G1 and G2 stand for hydrogen, halogen or an antigen recognizing moiety, with the provision that at least one of G1 or G2 is an antigen recognizing moiety,a is 10 to 100 mol %,b is 0 to 90 mol %c is 1 to 10 000; with the provisio that a+b=100 mol %characterized in that AR is connected in the polymer chain via the 2,2′ or 3,3′ or 5,5′ or 6,6′ or 7,7′ or 8,8′ positions according to general formula (II)Wherein the remaining positions 2,2′; 3,3′; 4,4′; 5,5′; 6,6′; 7,7′ and 8,8′ are substituted with same or different residues selected from the group consisting of H, SO2CF3, SO2Ra, CF3, CCl3, CN, SO3H, NO2, NRaRbRc+, CHO, CORa, CO2Ra, COCl, CONRaRb, F, Cl, Br, I, Ra, ORa, SRa, OCORa, NRaRb, NHCORa, CCRa, aryl-, heteroaryl-, C6H4ORa or C6H4NRaRb, with Ra-c independently hydrogen, alkyl-, alkenyl-, alkinyl-, heteroalkyl-, aryl-, heteroaryl-, cycloalkyl-, alkylcycloalkyl-, heteroalkylcycloalkyl-, heterocycloalkyl-, aralkyl- or a heteroaralkyl residue or (CH2)x(OCH2CH2)yO(CH2)zCH3, wherein x is an integer from 0 to 20; y is an integer from 0 to 50 and z is an integer from 0 to 20