Electrode Microarray Porous Reaction Layer for Higher Synthesis Quality
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Solution Overview
Problem
Electrode microarrays face challenges in achieving high synthesis quality for oligonucleotides and peptides due to issues like inefficient deblocking, missing deoxynucleotide bases, and delamination of surface coatings, which affect sensitivity in gene expression and SNP assays.
Innovation Solution
An electrode microarray with an adsorbed porous reaction layer comprising chemical species like monosaccharides, polyethylene glycol, and N-hydroxysuccinimide, which are adsorbed onto the electrodes to enhance synthesis quality and prevent fluorescence quenching, using a process involving plasma and electrochemical cleaning followed by adsorption of the reaction layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional electrode microarray surface is used without an adsorbed porous reaction layer, then the device structure remains simple, but synthesis quality deteriorates due to inefficient deblocking, missing deoxynucleotide bases, and delamination of surface coatings
Solution Approach 1:
The patent applies a porous reaction layer composed of adsorbed chemical species (monosaccharides, polyethylene glycol, N-hydroxysuccinimide) onto the electrode microarray surface. This porous structure provides increased surface area and reactive sites for oligonucleotide synthesis, improving synthesis quality by preventing deblocking inefficiencies and base loss while maintaining structural integrity to avoid delamination
Solution Approach 2:
The patent creates a composite surface structure by adsorbing multiple chemical species onto the electrode surface. The combination of monosaccharides, polyethylene glycol, and N-hydroxysuccinimide forms a multifunctional reaction layer that enhances synthesis quality through synergistic effects: monosaccharides provide reactive hydroxyl groups, polyethylene glycol prevents non-specific binding, and N-hydroxysuccinimide enables stable covalent attachment
2Reliability
If the electrode microarray surface is treated with plasma and electrochemical cleaning followed by adsorption of reaction layer, then synthesis quality and assay sensitivity improve, but the preparation process becomes more complex and time-consuming
Solution Approach 1:
The patent implements preliminary surface treatment steps (plasma cleaning, electrochemical cleaning) before adsorption of the reaction layer. These preliminary actions activate the electrode surface, remove contaminants, and create optimal conditions for subsequent adsorption, ensuring high reliability and sensitivity of the final microarray while establishing a reproducible preparation protocol
Solution Approach 2:
The patent utilizes parameter changes during the preparation process, including controlling adsorption time, temperature, and chemical species concentration. These parameter optimizations balance the complexity of the preparation process with the need for high assay sensitivity, allowing reproducible formation of the porous reaction layer with controlled thickness and composition
3Stability of the object's composition
If an adsorbed porous reaction layer is formed on the electrodes, then binding of chemical species is enhanced and delamination is prevented, but the device complexity increases due to the additional surface layer
Solution Approach 1:
The patent uses the adsorbed porous reaction layer as an intermediary between the electrode surface and the oligonucleotide synthesis process. This intermediate layer provides stable covalent attachment points through N-hydroxysuccinimide groups, prevents delamination by creating a buffer zone, and enhances binding of chemical species through its porous structure, while the adsorption process itself creates this stabilizing layer without requiring additional complex structural elements
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 adsorbed porous reaction layer improves synthesis quality by enhancing the binding of chemical species and increasing assay sensitivity, reducing issues like deblocking inefficiencies and delamination, leading to better performance in oligonucleotide and peptide synthesis.
Implementation Method 1
an adsorbed porous reaction layer comprising a chemical species selected from the group consisting of monosaccharides, disaccharides, trisaccharides, polyethylene glycol, polyethylene glycol derivative, N-hydroxysuccinimide, formula I, formula II, formula III, formula IV, formula V, formula VI, and formula VII
Implementation Method 2
using a process involving plasma and electrochemical cleaning followed by adsorption of the reaction layer
Implementation Method 3
using a process involving plasma and electrochemical cleaning followed by adsorption of the reaction layer
Data Source
AI summary
There is disclosed an electrode array device having an adsorbed porous reaction layer for improved synthesis quality. The array comprises a plurality of electrodes on a substrate, wherein the electrodes are electronically connected to a computer control system. The array has an adsorbed porous reaction layer on the plurality of electrodes, wherein the adsorbed porous reaction layer comprises a chemical species having at least one hydroxyl group. In the preferred embodiment, the reaction layer is sucrose. A method for preparing an electrode array for improved synthesis quality is disclosed. The method comprises a cleaning method and a method of attachment of a reaction layer. The cleaning method comprises a plasma cleaning method and a chemical cleaning method. The reaction layer is attached after cleaning by exposing the microarray to a solution containing the chemical species having at least one hydroxyl group.