3D Coated Substrates for High-Density Solid-Phase Synthesis
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Solution Overview
Problem
Current solid-phase synthesis techniques have limitations in increasing polymer density per unit area, which affects throughput and cost efficiency, particularly in applications like digital information storage using DNA.
Innovation Solution
The application of a three-dimensional coating on a solid substrate increases the surface area available for polymer synthesis, allowing for higher polymer density without increasing the substrate size, using materials like metal oxides, high-κ dielectrics, and organic polymers, and incorporating functional groups for attaching polymers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a coating with three-dimensional structure is applied to increase surface area, then polymer density per unit area increases, but device complexity increases
Solution Approach 1:
The patent applies a coating with a three-dimensional structure (nanoparticles, porous structure, or hierarchical architecture) on the solid substrate to increase the effective surface area available for polymer synthesis. This dimensional transformation from a flat 2D surface to a 3D structured surface allows more functional groups to be packed into the same footprint area, thereby increasing polymer density without expanding the substrate's planar dimensions.
Solution Approach 2:
The coating incorporates porous materials or nanoparticle structures that provide high surface area-to-volume ratios. The porous architecture creates numerous internal surfaces and cavities that can host functional groups, significantly increasing the number of available attachment sites for polymer synthesis per unit of substrate area, thus resolving the contradiction between polymer density and structural complexity.
2Quantity of substance
If the size of solid substrate is increased to increase polymer quantity, then polymer synthesis capacity increases, but device size increases
Solution Approach 1:
By transforming the substrate surface from a two-dimensional plane to a three-dimensional structured coating, the patent achieves exponential increase in surface area without proportional increase in substrate footprint. This allows the same polymer synthesis capacity to be achieved in a smaller device area, or alternatively, exceeds the capacity of larger uncoated substrates while maintaining a compact form factor.
Solution Approach 2:
The hierarchical or nested structure of the coating (e.g., core-shell nanoparticles, porous networks, or multi-layer architectures) allows multiple levels of surface area expansion within a confined volume. This nesting approach packs more functional groups into the same spatial envelope, increasing polymer capacity without expanding the overall device size.
3Productivity
If maximum density of functional groups is achieved on substrate surface, then number of polymers synthesized per batch increases, but manufacturing precision requirements increase
Solution Approach 1:
The porous or nanoparticulate coating structure provides a naturally high surface area that can accommodate dense functional group loading without requiring extremely precise control over functional group placement. The three-dimensional architecture distributes functional groups throughout the volume, reducing the stress of achieving maximum density compared to flat surfaces where uniform distribution is more difficult to maintain.
Solution Approach 2:
The patent changes the physical parameters of the substrate surface by applying a coating with different material properties and structural characteristics. This parameter transformation (from flat to 3D structured) alters the relationship between surface area and functional group capacity, allowing higher polymer throughput while maintaining more relaxed manufacturing tolerances for functional group density.
Data Source
AI summary
High surface area coatings are applied to solid substrates to increase the surface area available for solid-phase synthesis of polymers. The high surface area coatings use three-dimensional space to provide more area for functional groups to bind polymers than an untreated solid substrate. The polymers may be oligonucleotides, polypeptides, or another type of polymer. The solid substrate is a rigid supportive layer made from a material such as glass, a silicon material, a metal material, and plastic. The coating may be thin films, hydrogels, microparticles. The coating may be made from a metal oxide, a high-κ dielectric, a low-κ dielectric, an etched metal, a carbon material, or an organic polymer. The functional groups may be hydroxyl groups, amine groups, thiolate groups, alkenes, n-alkenes, alkalines, N-Hydroxysuccinimide (NHS)-activated esters, polyaniline, aminosilane groups, silanized oxides, oligothiophenes, and diazonium compounds. Techniques for applying coatings to solid substrates and attaching functional groups are also disclosed.