Conductive Hydrogel Affinity Switching for Bioactive Substance Release
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Solution Overview
Problem
Existing hydrogel materials for bioactive substance sequestration and release have limited modulability and specificity, with intrinsic physicochemical properties determining affinity and control, lacking reversible and real-time modulation capabilities, especially for substances with positively charged groups.
Innovation Solution
A method using an electrically conductive hydrogel material with a polymer network formed from anionically charged and uncharged building blocks, where electrical resistance and charge storage capacity are modulated by electrical potential, allowing reversible sequestration and release of bioactive substances through non-covalent interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If intrinsic network architecture is used to determine affinity for substance sequestration and release, then substance binding control is achieved, but real-time modulation capability is lost
Solution Approach 1:
The patent applies dynamics by making the hydrogel network's charge state changeable through electrical potential application. The network transitions between charged and neutral states, enabling real-time modulation of substance affinity. This is achieved by incorporating electrically conductive components that allow external electrical control of the network's charge characteristics, transforming a static system into a dynamically controllable one.
Solution Approach 2:
The patent changes the charge state parameter of the hydrogel network through application of electrical potential. By controlling the electrical potential applied to the conductive components, the network's charge characteristics are modulated, which directly affects the affinity for positively charged substances. This parameter change enables reversible switching between substance binding and release states.
2Power
If electrically conductive components are added to hydrogel, then charge injection capacity is increased, but control over substance affinity is reduced
Solution Approach 1:
The patent merges the charge injection function with the substance affinity control function into a single integrated system. The electrically conductive components are incorporated directly into the hydrogel network structure, allowing the same component to serve dual purposes: enhancing charge injection capacity while simultaneously enabling electrical control of substance affinity through modulation of the network's charge state.
Solution Approach 2:
The electrically conductive components perform multiple functions: they enhance charge injection capacity for electrical stimulation and simultaneously serve as control elements for modulating the hydrogel's affinity for bioactive substances. This multi-functionality eliminates the need for separate control mechanisms and integrates both functions into a unified system.
3Adaptability or versatility
If non-covalent interactions are used for reversible substance binding, then substance release is enabled, but specificity and control are reduced
Solution Approach 1:
The patent enhances the specificity of non-covalent binding by controlling the charge state parameter of the hydrogel network. By applying electrical potential to modulate the network's charge characteristics, the affinity for positively charged substances is precisely controlled. This parameter control transforms generic non-covalent interactions into specific, tunable binding events with enhanced selectivity.
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
Enables real-time, reversible, and specific control over bioactive substance concentration in hydrogel materials, enhancing the modulation of electrical properties and affinity for bioactive substances, facilitating controlled release and absorption.
Implementation Method 1
whose affinity for bioactive substances can be configured on the basis of parameters defining the anionically charged building blocks and has an electrically conductive component whose electrical resistance and electrical charge storage capacity depends on an interaction with hydrogel building blocks and a binding of bioactive substances to the hydrogel material, wherein the electrically conductive component is suitable to change the anionic charge of the hydrogel material and its affinity for bioactive substances by the influence of an electrical potential
Implementation Method 2
allow substances to be reversibly bound to affine polymer building blocks of the hydrogel network via various, non-covalent interactions and thus either to remove the substances selectively from a biofluid or a living tissue, i.e. to sequester them in the hydrogel, or to release them from the hydrogel to the biofluid or the living tissue
Implementation Method 3
wherein a change in the electrical resistance and/or a change in the charge storage capacity of the hydrogel material is detected and an absorption of bioactive substances in the hydrogel material or a release of bioactive substances from the hydrogel material into the biofluid is determined on the basis of the detected change in the electrical resistance and/or the detected charge storage capacity change
Data Source
AI summary
A method for detecting and influencing an uptake of bioactive substances in a hydrogel material and/or release of bioactive substances from the hydrogel material, wherein the hydrogel material is a polymer network formed from charged and uncharged building blocks, the affinity of which network for bioactive substances is configurable by parameters defining the charged building blocks, and whose electrical charge storage capacity depend on interaction with the hydrogel binding of bioactive substances to the hydrogel material. When the hydrogel material is contacted with a biofluid, a change in electrical resistance and/or a change in charge storage capacity of the hydrogel material is detected. Uptake or a release of bioactive substances from the hydrogel material into the biofluid is determined by change in electrical resistance. The invention further relates to a suitable electrically conductive hydrogel material.