Guanidine-Functionalized Particles for Biomaterial Capture in High Ionic Strength
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for capturing target biomaterials such as proteins and viruses in purification and detection processes are inefficient, especially in high ionic strength conditions, and lack effective solutions for non-specific binding in various environments.
Innovation Solution
Guanidine-functionalized particles with a specific ligand structure are used, which can be attached to insoluble particles like silica gel, allowing for non-specific binding of target biological species through ionic, hydrogen-bonding, and hydrophobic interactions, even in high salt concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional primary amine or quaternary ammonium functionalized particles are used for capturing target biomaterials, then the capture function is provided, but the capture efficiency deteriorates in high ionic strength conditions
Solution Approach 1:
The patent changes the chemical functional group from traditional primary amine or quaternary ammonium to guanidine functional group. This parameter change in the ligand structure enables the particle to maintain effective capture function in high ionic strength conditions where traditional functional groups fail, as the guanidine group provides different binding characteristics that are less sensitive to ionic environment changes
2Adaptability or versatility
If non-specific binding is used to capture various target biomaterials, then versatility is improved, but selectivity deteriorates leading to non-specific binding in various environments
Solution Approach 1:
The patent applies local quality by functionalizing the particle surface with guanidine groups that have specific local binding characteristics. These guanidine-functionalized regions provide localized non-specific binding through ionic, hydrogen-bonding, and hydrophobic interactions, enabling versatile capture of various biomaterials while maintaining controlled binding properties through the specific chemical nature of the guanidine group
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
These particles effectively capture target biological species, including proteins and viruses, in high ionic strength conditions, demonstrating superior performance compared to traditional primary amine and quaternary ammonium-functionalized ligands, and can be used in fluid purification devices to produce purified solutions.
Implementation Method 1
non-specific binding of target biological species through ionic, hydrogen-bonding, and hydrophobic interactions
Implementation Method 2
non-specific binding of target biological species through ionic, hydrogen-bonding, and hydrophobic interactions
Implementation Method 3
non-specific binding of target biological species through ionic, hydrogen-bonding, and hydrophobic interactions
Data Source
AI summary
Guanidine-functionalized particles and methods of making and using such particles.