Functional Polymer with Reversible and Irreversible Side Chains
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Solution Overview
Problem
Current polymers for surface modification, such as polycationic poly(L-lysine)-graft-poly(ethylene glycol) copolymers, are difficult and expensive to synthesize, and lack versatility in binding affinities to various substrates, limiting their compatibility and functionality.
Innovation Solution
A functional polymer with a backbone unit and multiple types of side chains, including reversible and irreversible binding capabilities, allowing for optimal surface adhesion and functionality on different substrates through post-modification of a polymer backbone with reactive groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a polymer with multiple types of side chains having different binding affinities is used, then compatibility with various substrates is improved, but device complexity increases
Solution Approach 1:
The polymer is divided into a backbone structure and multiple types of side chains, where each side chain type (D and E) has specific binding functionalities. This segmentation allows different parts of the polymer to perform specialized functions (reversible binding, irreversible binding, coating functionality) while maintaining overall versatility across substrates.
Solution Approach 2:
The polymer backbone is designed to support multiple types of side chains with different binding affinities and functionalities. This multi-functional design enables a single polymer structure to interact with various substrate types (metal oxides, noble metals, polymers) through different binding mechanisms, achieving universal compatibility.
2Ease of manufacture
If post-modification of polymer backbone is performed to add functionality, then ease of manufacture is improved, but manufacturing precision may be compromised
Solution Approach 1:
Reactive groups are pre-installed on the polymer backbone during synthesis. This preliminary action enables subsequent post-modification steps to proceed efficiently and uniformly, as the reactive groups are already positioned and distributed along the backbone before the actual functionalization occurs.
Solution Approach 2:
Reactive groups serve as intermediary elements between the polymer backbone and the side chains. These intermediaries facilitate controlled coupling reactions during post-modification, enabling precise attachment of side chains while maintaining manufacturing simplicity.
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 polymer achieves stable and homogeneous coating with enhanced compatibility and functionality on various substrates, maintaining stability across different environmental conditions and providing optimal packaging and bonding capabilities.
Implementation Method 1
a polymer backbone and a plurality of side chains, wherein the polymer backbone comprises a reactive group which is able to bind to a substrate
Implementation Method 2
the polymer is able to adsorb and self-organize as a confluent monolayer on negatively charged titanium oxide surfaces
Data Source
AI summary
A functional polymer including at least two different types of side chains, having the general formula (1),wherein A is an at least monosubstituted alkylene or arylene group; B is an amide, ester or ether group and n is 0 or 1; F is selected from: an ester, secondary amine, amide, ether, thio ether, thio ester, and may be the same or different for the different side chains; D is a side chain intended to reversible bind to a substrate or has a coating function; E is a side chain intended to irreversible bind to a substrate, the side chain E and polymer includes 1 to 10 different side chains D and 1 to 10 different side chains E, but at least one of each, and includes a plurality of each type, whereby the different types of side chains are randomly or regularly distributed in the polymer.