Microfluidic Synthesis Plate Layout for Small Molecule Libraries
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Solution Overview
Problem
Existing microfluidic devices for small molecule synthesis face challenges in efficiently handling a large number of unique building blocks due to the limitations of channel compatibility and the need for sequential reagent additions, which are not addressed by previous technologies focusing on polymer synthesis.
Innovation Solution
A microfluidic device design that separates vias for inlets and outlets onto separate plates from the microfluidic channels, allowing for simplified synthesis of organic small molecules using chemically compatible materials, enabling the creation of fully sealed channels for efficient small molecule synthesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If microfluidic channels are integrated with inlets and outlets in one piece for small molecule synthesis, then device complexity is reduced, but chemical compatibility becomes problematic due to solvent exposure
Solution Approach 1:
The device is divided into two separate components: a microfluidic component containing only the channels, and a substrate holder component containing the inlets and outlets. This segmentation allows each component to be optimized independently - the microfluidic component can be made from chemically inert materials like PDMS or glass that are compatible with organic solvents, while the substrate holder can be made from materials suitable for synthesis. The components connect via alignment features and sealing mechanisms, achieving chemical compatibility without excessive complexity.
2Adaptability or versatility
If hundreds of unique building blocks are delivered through sequential reagent additions using pneumatic valves, then the number of available building blocks increases, but the number of sequential steps becomes untenable
Solution Approach 1:
The device transitions from sequential delivery of building blocks through time (one after another) to spatial delivery (simultaneously at multiple locations). The microfluidic channels are arranged in a two-dimensional array on the substrate holder, allowing hundreds of different building blocks to be delivered to different spatial locations at the same time. This dimensional change from temporal to spatial organization enables high versatility without increasing the number of sequential steps.
3Productivity
If microfluidic channels are used for small molecule synthesis, then synthesis efficiency is improved, but the number of channels must be less than or equal to the number of building blocks available
Solution Approach 1:
The substrate holder component serves multiple functions: it holds the substrate, provides inlet and outlet ports for reagent delivery, enables alignment with the microfluidic component, and allows for the integration of hundreds of building blocks through its array structure. The microfluidic channels are designed to be reusable across multiple synthesis cycles. This multi-functionality allows the system to maintain high synthesis efficiency while accommodating a large number of building blocks through the versatile substrate holder design.
Data Source
AI summary
A device for the synthesis of small molecules on a substrate is provided. The device includes a synthesis plate with vias, and a microfluidic patterning plate with a series ot open-faced channels that can be aligned with the vias on the synthesis plate. The device may be used to synthesize combinatorial libraries of small molecules.